Active NPI 1043521313 Individual Practitioner Male Practitioner

Dr. Ewan Douglas Johnson , MD, PhD

Internal Medicine • Tomball, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ewan Johnson, MD, PhD is a certified Internal Medicine practicing in Tomball, TX. With approximately 22 years of clinical experience since graduating from University Of Texas Medical Branch At Galveston in 2004, Dr. Johnson delivers high-quality medical care to the local community at 13414 MEDICAL COMPLEX DR STE 6.

Dr. Johnson maintains professional affiliations with Exceptional Physicians Group Yuma Hospital Pllc, Concord Medical Group Of Texas Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include emergency department visit for life threatening or functioning severity, emergency department visit with moderate level of medical decision making, 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

13414 Medical Complex Dr Ste 6

Tomball, TX 773753333

Telephone 2814156687

Associated Practice Facility / Clinic

🏢 Tomball Regional Internal Medicine Associates Facility NPI 1457569741

Medicare Profile & Education

Medical School

University Of Texas Medical Branch At Galveston

Graduation Year

2004

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Tomball, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

22 Yrs -5.4 yrs vs City Avg

City Avg: 27.4 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

26 Specialists

Practicing in Tomball, TX (9538 Statewide)

Telehealth Adoption Rate

23.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

93.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (22 Years) 22 Yrs

Tomball Specialty Average (27.4 Years) 27.4 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
99285 Emergency department visit for life threatening or functioning severity	91	89	$2288.23	$167.83
99284 Emergency department visit with moderate level of medical decision making	88	88	$1600.74	$115.92
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	28	27	$189.57	$7.74
99283 Emergency department visit with low level of medical decision making	11	11	$1571.73	$68.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	12	12	$23866.67	$120.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,800	17	$21.67	$21.29
99213 Established patient office or other outpatient visit, typically 15 minutes	48	39	$96.52	$87.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	39	30	$138.80	$124.56
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	33	20	$15.01	$13.78
99284 Emergency department visit with moderate level of medical decision making	17	16	$10743.06	$119.77
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	13	11	$24.31	$22.57
77080 Dxa bone density measurement of hip, pelvis, spine	11	11	$82.98	$35.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,800	17	$20.46	$20.45
99213 Established patient office or other outpatient visit, typically 15 minutes	94	64	$94.90	$93.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	45	$132.62	$131.99
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	54	41	$58.50	$56.34
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	26	16	$83.90	$83.67
77080 Dxa bone density measurement of hip, pelvis, spine	20	20	$136.12	$39.89
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	17	14	$24.01	$23.70
99284 Emergency department visit with moderate level of medical decision making	15	15	$424.93	$120.09
99283 Emergency department visit with low level of medical decision making	14	14	$288.07	$70.65
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	14	11	$79.32	$45.23
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$184.64	$181.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,740	16	$19.48	$19.38
99213 Established patient office or other outpatient visit, typically 15 minutes	146	93	$77.11	$72.53
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	70	54	$66.04	$43.22
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	62	36	$264.00	$70.74
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	46	28	$23.87	$23.79
99239 Hospital discharge day management, more than 30 minutes	40	39	$391.80	$104.71
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	31	$738.82	$198.05
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	32	21	$380.47	$102.35
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	27	$110.64	$109.24
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	29	16	$82.20	$81.49
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	19	19	$500.84	$134.55
99284 Emergency department visit with moderate level of medical decision making	12	12	$600.00	$118.83
G0008 Administration of influenza virus vaccine	11	11	$41.81	$16.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,740	17	$18.73	$18.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	341	135	$112.67	$108.10
99213 Established patient office or other outpatient visit, typically 15 minutes	176	106	$75.98	$74.22
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	166	27	$1.72	$1.51
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	154	87	$260.31	$70.82
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	147	77	$379.12	$101.18
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	81	29	$24.21	$23.02
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	46	38	$149.20	$147.12
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	45	44	$728.18	$196.87
99239 Hospital discharge day management, more than 30 minutes	40	39	$371.80	$101.89
G0008 Administration of influenza virus vaccine	40	39	$17.43	$16.10
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	38	27	$17.53	$16.37
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	32	22	$87.74	$85.57
90653 Vaccine for influenza for injection into muscle	29	28	$58.62	$57.45
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	29	17	$81.01	$78.31
93000 Routine ekg using at least 12 leads including interpretation and report	27	22	$17.40	$17.16
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	23	21	$46.00	$45.35
77080 Dxa bone density measurement of hip, pelvis, spine	19	19	$40.64	$39.77
81003 Automated urinalysis test	17	15	$2.46	$2.41
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	16	11	$68.87	$67.91
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	14	14	$211.20	$208.45
99496 Transitional care management services for problem of high complexity	13	12	$219.12	$215.87
90756 Vaccine for influenza for injection into muscle	12	12	$25.58	$22.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,980	20	$18.54	$17.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	370	144	$111.14	$104.98
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	338	160	$376.94	$96.79
99213 Established patient office or other outpatient visit, typically 15 minutes	199	118	$75.27	$70.84
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	160	62	$87.76	$83.01
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	117	24	$2.15	$1.78
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	83	76	$718.91	$188.85
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	67	34	$22.67	$21.24
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	60	14	$44.40	$41.42
87804 Detection test by immunoassay with direct visual observation for influenza virus	52	25	$16.46	$16.13
99239 Hospital discharge day management, more than 30 minutes	50	48	$353.43	$100.65
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	46	37	$154.93	$135.48
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	44	28	$199.40	$68.94
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	33	20	$82.67	$78.86
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	30	24	$20.77	$20.19
81003 Automated urinalysis test	30	24	$2.73	$2.68
93000 Routine ekg using at least 12 leads including interpretation and report	25	23	$24.15	$14.80
G0008 Administration of influenza virus vaccine	24	23	$21.73	$19.66
77080 Dxa bone density measurement of hip, pelvis, spine	21	20	$48.33	$39.26
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	21	18	$132.84	$127.08
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$211.38	$203.67
90653 Vaccine for influenza for injection into muscle	11	11	$54.01	$47.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,920	18	$16.75	$16.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	312	141	$109.83	$104.50
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	219	102	$383.74	$98.19
99213 Established patient office or other outpatient visit, typically 15 minutes	174	100	$74.87	$70.96
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	140	68	$167.68	$69.51
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	88	19	$1.80	$1.76
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	69	42	$86.21	$81.24
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	69	66	$695.97	$191.29
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	63	51	$147.65	$139.40
99239 Hospital discharge day management, more than 30 minutes	48	47	$245.70	$103.29
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	48	36	$20.54	$19.80
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	44	34	$132.00	$125.62
87804 Detection test by immunoassay with direct visual observation for influenza virus	40	19	$16.91	$15.11
77080 Dxa bone density measurement of hip, pelvis, spine	37	37	$44.64	$39.96
81003 Automated urinalysis test	32	21	$3.00	$2.94
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	32	18	$74.91	$72.46
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	28	23	$45.70	$42.11
93000 Routine ekg using at least 12 leads including interpretation and report	26	25	$17.09	$16.52
G0008 Administration of influenza virus vaccine	25	25	$25.77	$25.25
85610 Blood test, clotting time	24	13	$5.27	$5.16
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	22	22	$17.74	$17.39
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	22	19	$26.18	$24.95
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$203.88	$195.95
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	17	$163.69	$130.31
G0009 Administration of pneumococcal vaccine	13	13	$26.57	$23.40
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	13	12	$41.22	$40.49
99343 New patient home visit, typically 45 minutes	12	12	$136.56	$127.92
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	12	12	$53.68	$52.66

Medical Specialties & State Licenses

CMS Verified: 2021-05-30

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License TX N8018

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Emergency Medicine

NUCC Taxonomy Code: 207P00000X

State License TX N8018

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Internal Medicine - Medical Oncology

NUCC Taxonomy Code: 207RX0202X

State License TX N8018

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Hospital & Practice Group Affiliations

Exceptional Physicians Group Yuma Hospital Pllc

2648 S Araby Rd, Yuma, AZ 853657236

Phone: 4693417800100

Concord Medical Group Of Texas Pllc

1500 S Sunset Ave, Littlefield, TX 793394899

Phone: 8063856411

Secondary Practice Locations

9359 Hwy 37 Suite D

Corpus Christi, TX 784097840

Phone: 8009510182

Career & Practice History Timeline

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

7 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 11, 2021

Emergency Medicine (License #N8018 in TX)

✅

NPI Profile Active November 02, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location November 02, 2011

Registered at 13414 MEDICAL COMPLEX DR STE 6, TOMBALL, TX 773753333 (Tel: 2814156687)

📍

Updated Business Mailing Address November 02, 2011

Registered at 13414 MEDICAL COMPLEX DR STE 6, TOMBALL, TX 773753333 (Tel: 2815160212)

👤

Provider Name / Credentials Updated November 02, 2011

Recorded as EWAN JOHNSON, MD, PHD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 02, 2011

Internal Medicine (License #N8018 in TX)

🟢

Initial NPI Registration & Enumeration July 01, 2010

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1043521313

Entity Type:

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

Enumeration Date: July 01, 2010

Last Update: June 11, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

13414 Medical Complex Dr Ste 6

Tomball, TX 773753333

Phone: 2815160212

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.