Active NPI 1619170347 Individual Practitioner Male Practitioner

Dr. John Kennedy Gresham , MD

Internal Medicine - Interventional Cardiology • El Paso, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Gresham, MD is a certified Internal Medicine - Interventional Cardiology practicing in El Paso, TX. With approximately 27 years of clinical experience since graduating from Eastern Virginia Medical School in 1999, Dr. Gresham delivers high-quality medical care to the local community at 4815 ALAMEDA AVE.

Dr. Gresham maintains professional affiliations with Carteret Medical Group Llc, Citizens Medical Center County Of Victoria, Carteret County General Hospital Corporation and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, routine ekg using at least 12 leads including interpretation and report, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4815 Alameda Ave

El Paso, TX 799052705

Telephone 9152155200

Fax 9152158640

Associated Practice Facility / Clinic

🏢 El Paso County Hospital District Facility NPI 1316936990

Medicare Profile & Education

Medical School

Eastern Virginia Medical School

Graduation Year

1999

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Interventional Cardiology in El Paso, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

27 Yrs +2.4 yrs vs City Avg

City Avg: 24.6 Yrs

State Avg: 24.6 Yrs

Regional Practice Density

24 Specialists

Practicing in El Paso, TX (730 Statewide)

Telehealth Adoption Rate

8.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

62.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Gresham (27 Years) 27 Yrs

El Paso Specialty Average (24.6 Years) 24.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,369	674	$219.30	$122.11
93000 Routine ekg using at least 12 leads including interpretation and report	736	583	$33.53	$13.33
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	713	549	$25.00	$7.64
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	412	405	$400.82	$183.64
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	400	124	$163.80	$74.32
J2785 Injection, regadenoson, 0.1 mg	264	66	$300.00	$10.27
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	132	130	$206.35	$65.11
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	113	64	$46.49	$21.94
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	94	93	$593.62	$72.72
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	84	83	$463.42	$162.86
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	84	83	$138.84	$67.53
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	80	80	$925.50	$402.91
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	74	74	$341.11	$158.02
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	66	63	$102.84	$11.42
93970 Ultrasound study of arm or leg veins with compression and maneuvers	45	27	$375.52	$159.84
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	33	33	$680.73	$266.56
99213 Established patient office or other outpatient visit, typically 15 minutes	30	29	$169.61	$86.81
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	27	25	$428.00	$172.17
93880 Ultrasound of both sides of head and neck blood flow	26	26	$388.02	$175.51
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	23	$359.51	$123.46
99231 Follow-up hospital inpatient care per day, typically 15 minutes	19	11	$83.85	$47.15
93925 Ultrasound of leg arteries or artery grafts	18	14	$492.72	$223.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,646	714	$216.17	$124.08
93000 Routine ekg using at least 12 leads including interpretation and report	699	611	$35.12	$13.78
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	535	116	$149.87	$77.43
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	489	480	$398.15	$189.72
J2785 Injection, regadenoson, 0.1 mg	436	109	$300.00	$53.46
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	303	219	$25.00	$7.97
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	139	31	$46.47	$22.50
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	114	103	$542.11	$70.32
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	95	95	$910.71	$415.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	95	95	$356.94	$162.29
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	90	89	$140.34	$68.59
99213 Established patient office or other outpatient visit, typically 15 minutes	88	68	$205.53	$88.00
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	77	72	$465.40	$169.80
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	67	62	$87.47	$11.93
93970 Ultrasound study of arm or leg veins with compression and maneuvers	62	58	$375.50	$166.48
93925 Ultrasound of leg arteries or artery grafts	55	54	$492.52	$233.03
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	55	19	$235.10	$115.88
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	42	42	$959.76	$278.72
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	28	11	$2757.56	$1049.53
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	28	28	$155.89	$67.07
93224 Electrocardiogram (ecg) 2-day continuous with review and report by health care professional	22	22	$172.47	$67.68
93288 Evaluation of single, dual, multiple lead or leadless pacemaker system	21	16	$86.12	$55.11
99284 Emergency department visit with moderate level of medical decision making	20	17	$233.54	$118.43
93297 Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days	19	11	$55.63	$25.14
93280 Programming of dual lead pacemaker system	16	11	$126.76	$77.91
93880 Ultrasound of both sides of head and neck blood flow	16	16	$388.02	$185.52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	16	$330.21	$127.22
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$248.89	$108.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,714	679	$212.36	$123.18
93000 Routine ekg using at least 12 leads including interpretation and report	726	606	$33.53	$13.85
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	521	111	$146.40	$68.69
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	508	497	$399.83	$194.65
J2785 Injection, regadenoson, 0.1 mg	365	136	$299.38	$59.94
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	121	121	$138.80	$69.21
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	120	120	$908.75	$434.26
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	104	104	$329.19	$163.23
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	89	62	$300.00	$78.96
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	85	19	$44.26	$22.66
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	62	56	$98.39	$10.98
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	49	18	$234.11	$118.97
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	48	45	$164.08	$66.15
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	39	37	$395.58	$187.41
93970 Ultrasound study of arm or leg veins with compression and maneuvers	35	34	$375.52	$187.27
93224 Electrocardiogram (ecg) 2-day continuous with review and report by health care professional	29	25	$168.66	$73.57
93925 Ultrasound of leg arteries or artery grafts	27	27	$492.72	$240.92
99213 Established patient office or other outpatient visit, typically 15 minutes	27	26	$175.10	$88.69
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	27	27	$631.27	$263.61
36465 Injection of chemical agent into single incompetent vein of leg using ultrasound guidance	23	12	$2956.16	$1349.71
93880 Ultrasound of both sides of head and neck blood flow	20	20	$378.32	$190.94
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	15	14	$283.40	$99.15
93280 Programming of dual lead pacemaker system	14	11	$126.76	$75.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,620	667	$212.63	$127.07
93000 Routine ekg using at least 12 leads including interpretation and report	644	540	$34.22	$14.41
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	477	470	$399.23	$201.48
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	360	73	$153.76	$70.52
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	113	27	$46.25	$22.42
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	91	88	$138.84	$69.28
J2785 Injection, regadenoson, 0.1 mg	83	82	$300.00	$58.28
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	74	73	$925.50	$467.25
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	61	61	$321.38	$162.91
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	54	48	$105.38	$12.30
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	43	21	$232.72	$122.04
93970 Ultrasound study of arm or leg veins with compression and maneuvers	35	34	$373.36	$194.21
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	33	29	$350.11	$70.28
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	30	17	$2757.56	$1270.29
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	27	27	$300.00	$74.69
93880 Ultrasound of both sides of head and neck blood flow	20	19	$388.02	$197.95
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	20	20	$1212.78	$278.26
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	12	$391.45	$196.48
93922 Ultrasound study of arm and leg arteries	11	11	$165.68	$84.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,675	681	$212.50	$105.36
93000 Routine ekg using at least 12 leads including interpretation and report	766	588	$32.98	$16.31
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	466	458	$400.82	$200.68
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	182	41	$161.41	$66.74
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	128	38	$45.98	$22.37
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	119	117	$138.84	$68.31
J2785 Injection, regadenoson, 0.1 mg	99	99	$300.00	$58.56
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	97	97	$925.50	$453.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	79	79	$321.74	$159.18
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	47	44	$102.56	$12.17
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	42	42	$228.46	$73.24
93970 Ultrasound study of arm or leg veins with compression and maneuvers	38	37	$375.52	$187.76
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	36	17	$232.72	$117.64
93298 Evaluation of cardiac rhythm monitor system, remote up to 30 days	32	13	$52.72	$26.86
93297 Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days	30	11	$52.72	$26.85
93880 Ultrasound of both sides of head and neck blood flow	19	19	$388.02	$192.47
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	18	18	$559.94	$284.38
93296 Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days	18	11	$48.58	$24.42
93280 Programming of dual lead pacemaker system	18	12	$126.76	$70.24
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	15	12	$2757.56	$1325.04
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$365.26	$192.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,869	736	$212.23	$103.45
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,136	180	$143.69	$70.14
93000 Routine ekg using at least 12 leads including interpretation and report	965	642	$32.98	$16.03
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	499	487	$402.80	$194.17
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	225	60	$43.48	$21.67
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	171	170	$139.40	$66.82
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	149	149	$920.39	$441.39
J2785 Injection, regadenoson, 0.1 mg	123	122	$192.68	$56.26
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	108	91	$399.72	$195.38
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	91	81	$98.24	$11.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	83	83	$321.56	$157.24
93970 Ultrasound study of arm or leg veins with compression and maneuvers	81	72	$375.46	$182.65
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	65	36	$232.03	$114.59
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	59	56	$146.82	$70.81
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	57	29	$101.75	$71.39
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	52	26	$2770.27	$1356.79
93280 Programming of dual lead pacemaker system	31	24	$126.76	$62.50
93880 Ultrasound of both sides of head and neck blood flow	25	25	$387.60	$191.03
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	24	24	$653.49	$272.21
0295T External EKG recording for more than 48 hours up to 21 days with analysis, report, review and interpretation	20	19	$445.00	$299.55
92960 External shock to heart to regulate heart beat	18	17	$312.20	$107.81
93460 Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist	15	15	$757.48	$372.75
93454 Insertion of tube in coronary artery for diagnosis with review by radiologist	15	14	$485.02	$199.06
99213 Established patient office or other outpatient visit, typically 15 minutes	14	14	$144.46	$66.21
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	14	14	$157.92	$77.87
93018 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician	14	14	$29.61	$14.60
93016 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician	14	14	$44.36	$21.87
93288 Evaluation of single, dual, multiple lead or leadless pacemaker system	13	12	$86.12	$42.37
93925 Ultrasound of leg arteries or artery grafts	11	11	$492.67	$220.65
93922 Ultrasound study of arm and leg arteries	11	11	$165.92	$66.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,942	720	$208.82	$99.77
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,057	200	$142.34	$67.60
93000 Routine ekg using at least 12 leads including interpretation and report	840	600	$32.70	$15.69
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	524	509	$436.12	$192.90
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	311	158	$101.61	$65.86
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	257	50	$38.84	$20.02
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	174	171	$147.52	$66.08
93970 Ultrasound study of arm or leg veins with compression and maneuvers	157	125	$374.96	$179.16
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	156	156	$926.10	$448.71
J2785 Injection, regadenoson, 0.1 mg	128	127	$100.00	$55.21
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	122	115	$399.26	$190.46
36475 Destruction of insufficient vein of arm or leg, accessed through the skin	118	47	$2889.70	$1386.41
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	97	97	$319.22	$152.88
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	90	82	$97.80	$11.69
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	83	41	$228.66	$111.59
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	32	30	$126.88	$65.62
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	31	31	$681.35	$285.08
93280 Programming of dual lead pacemaker system	30	23	$113.60	$54.67
93880 Ultrasound of both sides of head and neck blood flow	26	26	$385.38	$188.57
0295T External EKG recording for more than 48 hours up to 21 days with analysis, report, review and interpretation	22	20	$495.45	$289.64
93016 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician	16	15	$44.14	$21.17
93018 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician	16	15	$29.44	$14.13
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	16	15	$157.10	$75.63
93288 Evaluation of single, dual, multiple lead or leadless pacemaker system	15	15	$72.62	$36.05
99213 Established patient office or other outpatient visit, typically 15 minutes	15	15	$141.70	$65.54
92960 External shock to heart to regulate heart beat	13	11	$308.38	$87.30
92941 Removal of plaque and blood clot, insertion of stent and/or balloon dilation of single vessel	11	11	$1330.66	$618.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,837	719	$206.47	$98.94
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,049	191	$138.95	$66.72
93000 Routine ekg using at least 12 leads including interpretation and report	723	571	$33.60	$15.48
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	490	473	$399.35	$205.36
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician	182	177	$148.50	$69.85
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	163	39	$38.63	$18.56
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	149	148	$927.18	$439.05
J2785 Injection, regadenoson, 0.1 mg	107	106	$100.00	$53.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	105	105	$316.40	$152.61
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	76	76	$393.89	$190.54
93307 Ultrasound of heart	56	53	$113.52	$41.45
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	55	51	$200.48	$96.66
93298 Evaluation of cardiac rhythm monitor system, remote up to 30 days	41	11	$52.71	$25.32
93299 Remote evaluations of implantable heart recorder system including transmissions, technician review, support, and distribution of results up to 30 days	41	11	$100.00	$37.38
A9502 Technetium tc-99m tetrofosmin, diagnostic, per study dose	38	23	$111.29	$67.44
93280 Programming of dual lead pacemaker system	30	22	$112.47	$54.41
93458 Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist	20	19	$614.62	$272.96
93460 Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist	20	20	$755.42	$349.07
92960 External shock to heart to regulate heart beat	18	17	$356.62	$83.70
93296 Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days	14	11	$48.71	$23.54
93288 Evaluation of single, dual, multiple lead or leadless pacemaker system	14	14	$70.81	$34.70
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	12	11	$15.84	$8.04
93018 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician	11	11	$28.99	$14.05
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect	11	11	$154.15	$74.97

Medical Specialties & State Licenses

CMS Verified: 2026-04-14

Internal Medicine - Interventional Cardiology Primary Specialty

NUCC Taxonomy Code: 207RI0011X

State License TX M6641

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Nuclear Medicine - Nuclear Cardiology

NUCC Taxonomy Code: 207UN0901X

State License TX M6641

A nuclear medicine physician who specializes in nuclear cardiology.

Internal Medicine - Cardiovascular Disease

NUCC Taxonomy Code: 207RC0000X

State License VA 0101230320

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Internal Medicine - Cardiovascular Disease

NUCC Taxonomy Code: 207RC0000X

State License TX M6641

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Hospital & Practice Group Affiliations

Carteret County General Hospital Corporation

3500 Arendell St, Morehead City, NC 285572901

Phone: 2524996000

Carteret Medical Group Llc

1165 Cedar Point Blvd, Cedar Point, NC 285841030

Carteret Medical Group Llc

3500 Arendell St, Morehead City, NC 285572901

Phone: 2522472013

Uvalde Medical And Surgical Associates

1195 Garner Field Rd, Uvalde, TX 788014822

Phone: 83027862511175

Citizens Medical Center County Of Victoria

2701 Hospital Dr, Victoria, TX 779015749

Phone: 3615739181

Secondary Practice Locations

540 Oak Centre Dr Ste 260

San Antonio, TX 782584767

Phone: 2104990448

1800 Garner Field Rd

Uvalde, TX 788016210

Phone: 8303338634

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Priyanka Wani , MD

Student in an Organized Health Care Education/Training Program

NPI 1003228248

Doctor of Medicine (M.D.)

Dr. Andrew Ortega , DO

Internal Medicine - Gastroenterology

NPI 1003438250

Doctor of Osteopathic Medicine (D.O.)

Dr. Alejandro Robles , MD

Internal Medicine - Gastroenterology

NPI 1023541513

Doctor of Medicine (M.D.)

Dr. Shamali Nehete , MD

Student in an Organized Health Care Education/Training Program

NPI 1053169151

Doctor of Medicine (M.D.)

Sheldon Rao

Internal Medicine - Pulmonary Disease

NPI 1063934354

Dr. Akanksha Togra , MD

Student in an Organized Health Care Education/Training Program

NPI 1104514199

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events

📍

Updated Practice Location April 14, 2026

Registered at 4815 ALAMEDA AVE, EL PASO, TX 799052705 (Tel: 9152155200)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 14, 2026

Nuclear Medicine (License #M6641 in TX)

📍

Updated Practice Location September 14, 2022

Registered at 540 OAK CENTRE DR STE 260, SAN ANTONIO, TX 782584767 (Tel: 2104990448)

📍

Updated Business Mailing Address September 14, 2022

Registered at 540 OAK CENTRE DR STE 260, SAN ANTONIO, TX 782584767 (Tel: 2104990448)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 14, 2022

Internal Medicine (License #M6641 in TX)

📍

Updated Practice Location July 03, 2018

Registered at 19276 STONE OAK PKWY, SUITE 103, SAN ANTONIO, TX 78258 (Tel: 2104990448)

✅

NPI Profile Active April 07, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location April 07, 2012

Registered at 19276 STONE OAK PKWY, SUITE 103, SAN ANTONIO, TX 782583378 (Tel: 2104990448)

📍

Updated Business Mailing Address April 07, 2012

Registered at 19276 STONE OAK PKWY, SUITE 103, SAN ANTONIO, TX 782583378 (Tel: 2104990448)

👤

Provider Name / Credentials Updated April 07, 2012

Recorded as JOHN GRESHAM, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 07, 2012

Internal Medicine (License #M6641 in TX)

🟢

Initial NPI Registration & Enumeration June 08, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. John Gresham. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1619170347

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 08, 2007

Last Update: April 14, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

540 Oak Centre Dr Ste 260

San Antonio, TX 782584767

Phone: 2104990448

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.