Active NPI 1790724060 Individual Practitioner Male Practitioner

Dr. John Croghan , MD

Internal Medicine • Winnetka, IL

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. John Croghan, MD is a certified Internal Medicine practicing in Winnetka, IL. With approximately 40 years of clinical experience since graduating from Rush Medical College Of Rush University in 1986, Dr. Croghan delivers high-quality medical care to the local community at 710 OAK ST.

Dr. Croghan is affiliated with Dedication Health Llc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include injection, denosumab, 1 mg, established patient outpatient office visit, insertion of needle into vein for collection of blood sample. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

710 Oak St

Winnetka, IL 600932522

Telephone 8478401470

Associated Practice Facility / Clinic

🏢 Dedication Health Llc Facility NPI 1326403593

Medicare Profile & Education

Medical School

Rush Medical College Of Rush University

Graduation Year

1986

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Winnetka, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

40 Yrs +9.3 yrs vs City Avg

City Avg: 30.7 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

20 Specialists

Practicing in Winnetka, IL (7544 Statewide)

Telehealth Adoption Rate

55.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

70.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Croghan (40 Years) 40 Yrs

Winnetka Specialty Average (30.7 Years) 30.7 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
J0897 Injection, denosumab, 1 mg	2,220	28	$65.00	$25.73
99213 Established patient office or other outpatient visit, typically 15 minutes	1,186	180	$143.00	$76.33
36415 Insertion of needle into vein for collection of blood sample	255	144	$22.00	$8.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	158	89	$198.00	$131.96
93000 Routine ekg using at least 12 leads including interpretation and report	154	133	$121.00	$14.99
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	106	106	$250.00	$133.76
G0008 Administration of influenza virus vaccine	84	84	$39.00	$33.70
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	79	45	$39.00	$14.63
90653 Vaccine for influenza for injection into muscle	76	76	$95.00	$81.82
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	48	23	$28.00	$1.26
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	47	44	$287.00	$187.23
G0009 Administration of pneumococcal vaccine	46	46	$39.00	$33.70
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	45	45	$250.00	$245.00
71250 Ct scan of chest without contrast	26	24	$1320.00	$130.44
71046 X-ray of chest, 2 views	24	18	$121.00	$34.42
72131 CT scan of lower spine	12	12	$1320.00	$111.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,380	19	$65.00	$23.07
99213 Established patient office or other outpatient visit, typically 15 minutes	986	178	$143.00	$95.85
36415 Insertion of needle into vein for collection of blood sample	252	147	$22.00	$8.40
93000 Routine ekg using at least 12 leads including interpretation and report	145	125	$121.00	$15.57
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	129	78	$198.00	$135.74
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	108	108	$250.00	$136.97
G0008 Administration of influenza virus vaccine	87	86	$39.00	$32.32
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	78	47	$39.00	$14.91
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	58	32	$28.00	$1.52
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	58	58	$85.00	$75.33
G0009 Administration of pneumococcal vaccine	54	54	$39.00	$32.32
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	46	46	$250.00	$245.00
90662 Influenza vaccine split virus, preservative free	27	27	$75.00	$71.93
71250 Ct scan of chest without contrast	25	24	$1320.00	$138.41
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	22	21	$287.00	$190.19
71046 X-ray of chest, 2 views	21	16	$121.00	$35.87
72131 CT scan of lower spine	11	11	$1320.00	$131.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,089	175	$143.00	$97.66
J0897 Injection, denosumab, 1 mg	853	22	$63.63	$21.61
36415 Insertion of needle into vein for collection of blood sample	249	146	$22.00	$2.96
93000 Routine ekg using at least 12 leads including interpretation and report	134	112	$121.00	$15.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	125	72	$198.00	$137.19
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	94	94	$250.00	$139.86
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	80	44	$39.00	$15.31
G0008 Administration of influenza virus vaccine	75	75	$39.00	$31.04
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	67	67	$85.00	$70.19
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	53	26	$28.00	$1.73
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	26	25	$287.00	$194.28
71046 X-ray of chest, 2 views	19	18	$121.00	$36.52
81003 Automated urinalysis test	18	14	$22.00	$2.22
71250 Ct scan of chest without contrast	17	16	$1320.00	$143.94
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	12	11	$50.00	$15.45
G0009 Administration of pneumococcal vaccine	11	11	$39.00	$31.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,261	15	$26.21	$19.64
99213 Established patient office or other outpatient visit, typically 15 minutes	851	170	$143.00	$98.24
36415 Insertion of needle into vein for collection of blood sample	326	160	$22.00	$2.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	181	99	$198.00	$139.39
93000 Routine ekg using at least 12 leads including interpretation and report	133	112	$121.00	$16.11
G0008 Administration of influenza virus vaccine	106	106	$39.00	$17.94
81003 Automated urinalysis test	106	85	$22.00	$2.25
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	104	104	$85.00	$66.38
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	99	99	$250.00	$141.86
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	93	42	$198.00	$96.62
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	79	41	$39.00	$15.09
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	63	31	$28.00	$2.00
71250 Ct scan of chest without contrast	35	32	$1320.00	$141.89
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	34	30	$287.00	$194.86
99306 Initial nursing facility visit, typically 45 minutes per day	28	28	$298.00	$176.75
10021 Fine needle aspiration biopsy, first growth	23	15	$491.00	$113.35
99336 Established patient assisted living visit, typically 40 minutes	23	11	$264.00	$143.43
99350 Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes	17	11	$391.00	$189.78
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	15	13	$265.00	$136.87
74176 Ct scan of abdomen and pelvis without contrast	13	12	$814.00	$211.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,082	15	$27.50	$19.71
99213 Established patient office or other outpatient visit, typically 15 minutes	778	162	$143.00	$79.66
36415 Insertion of needle into vein for collection of blood sample	312	147	$22.00	$2.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	254	104	$198.00	$116.67
G0008 Administration of influenza virus vaccine	119	117	$39.00	$17.67
93000 Routine ekg using at least 12 leads including interpretation and report	116	101	$121.00	$18.37
81003 Automated urinalysis test	110	83	$22.00	$2.22
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	110	110	$85.00	$59.89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	91	91	$250.00	$123.86
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	85	40	$39.00	$14.31
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	68	29	$28.00	$1.83
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	51	28	$198.00	$97.80
71250 Ct scan of chest without contrast	31	31	$1320.00	$161.02
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	27	24	$287.00	$157.03
99350 Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes	26	15	$391.00	$194.18
10021 Fine needle aspiration biopsy, first growth	20	14	$491.00	$108.37
99306 Initial nursing facility visit, typically 45 minutes per day	15	15	$298.00	$179.26
74178 Ct scan of abdomen and pelvis before and after contrast	11	11	$1617.00	$392.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	843	14	$27.50	$18.67
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	319	127	$198.00	$115.10
36415 Insertion of needle into vein for collection of blood sample	300	157	$22.00	$2.87
99213 Established patient office or other outpatient visit, typically 15 minutes	240	132	$143.00	$78.52
81003 Automated urinalysis test	150	112	$22.00	$2.44
93000 Routine ekg using at least 12 leads including interpretation and report	134	119	$121.00	$18.25
G0008 Administration of influenza virus vaccine	127	125	$39.00	$17.33
90653 Vaccine for influenza for injection into muscle	122	122	$85.00	$58.34
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	97	97	$250.00	$122.96
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	92	41	$198.00	$97.63
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	92	49	$39.00	$17.56
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	77	38	$28.00	$1.81
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	47	39	$287.00	$154.68
99306 Initial nursing facility visit, typically 45 minutes per day	38	37	$298.00	$177.15
71250 Ct scan of chest without contrast	36	34	$1320.00	$159.38
10021 Fine needle aspiration biopsy, first growth	29	23	$491.00	$102.77
81001 Manual urinalysis test with examination using microscope, automated	22	20	$44.00	$3.45
71046 X-ray of chest, 2 views	16	15	$121.00	$33.43

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	380	131	$198.00	$113.33
36415 Insertion of needle into vein for collection of blood sample	342	153	$22.00	$2.88
99213 Established patient office or other outpatient visit, typically 15 minutes	226	122	$143.00	$76.86
81001 Manual urinalysis test with examination using microscope, automated	170	122	$44.00	$3.84
93000 Routine ekg using at least 12 leads including interpretation and report	133	120	$121.00	$17.95
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	129	49	$198.00	$97.05
G0008 Administration of influenza virus vaccine	120	120	$39.00	$21.31
90653 Vaccine for influenza for injection into muscle	118	118	$85.00	$52.52
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	95	49	$39.00	$21.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	92	92	$250.00	$122.51
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	77	32	$28.00	$1.91
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	49	43	$287.00	$151.31
10021 Fine needle aspiration biopsy, first growth	42	23	$491.00	$131.38
71250 Ct scan of chest without contrast	35	29	$1320.00	$170.69
71046 X-ray of chest, 2 views	31	27	$121.00	$32.00
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	25	17	$265.00	$136.39
90471 Administration of 1 vaccine	22	21	$68.00	$20.43
80047 Blood test, basic group of blood chemicals (calcium, ionized)	17	15	$27.00	$13.46
85014 Red blood cell concentration measurement	17	15	$24.00	$2.87
99306 Initial nursing facility visit, typically 45 minutes per day	17	17	$298.00	$176.24
87804 Detection test by immunoassay with direct visual observation for influenza virus	11	11	$29.00	$16.22

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	386	128	$198.00	$113.10
36415 Insertion of needle into vein for collection of blood sample	337	156	$22.00	$2.91
81001 Manual urinalysis test with examination using microscope, automated	145	101	$44.00	$4.26
93000 Routine ekg using at least 12 leads including interpretation and report	132	117	$121.00	$18.12
85610 Blood test, clotting time	131	14	$40.00	$5.28
G0008 Administration of influenza virus vaccine	122	120	$39.00	$26.20
99213 Established patient office or other outpatient visit, typically 15 minutes	104	71	$143.00	$76.96
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	103	103	$250.00	$121.54
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	103	41	$198.00	$96.58
90653 Vaccine for influenza for injection into muscle	86	84	$85.00	$48.93
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	81	14	$319.00	$110.86
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	71	28	$39.00	$26.59
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	69	26	$28.00	$2.83
71250 Ct scan of chest without contrast	39	37	$1320.00	$168.50
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	37	34	$287.00	$152.51
81003 Automated urinalysis test	36	30	$22.00	$3.02
71020 X-ray of chest, 2 views, front and side	35	30	$121.00	$29.48
99336 Established patient assisted living visit, typically 40 minutes	35	13	$264.00	$142.60
10021 Fine needle aspiration biopsy, first growth	33	28	$491.00	$131.94
90662 Influenza vaccine split virus, preservative free	32	32	$75.00	$46.55
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	25	11	$265.00	$135.58
99306 Initial nursing facility visit, typically 45 minutes per day	18	17	$298.00	$176.01
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	18	11	$495.00	$215.95

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036076821

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.

Hospital & Practice Group Affiliations

Dedication Health Llc

710 Oak St, Winnetka, IL 600932522

Phone: 8479866770

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Richard Stern , MD

Internal Medicine

NPI 1427139765

Doctor of Medicine (M.D.)

Dr. Santiago Candocia , MD

Internal Medicine

NPI 1780764019

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active February 03, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location February 03, 2016

Registered at 710 OAK ST, WINNETKA, IL 600932522 (Tel: 8478401470)

📍

Updated Business Mailing Address February 03, 2016

Registered at 710 OAK ST, WINNETKA, IL 600932522 (Tel: 8479866770)

👤

Provider Name / Credentials Updated February 03, 2016

Recorded as JOHN CROGHAN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 03, 2016

Internal Medicine (License #036076821 in IL)

🟢

Initial NPI Registration & Enumeration June 05, 2006

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: 1790724060

Entity Type:

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

Enumeration Date: June 05, 2006

Last Update: February 03, 2016

Sole Proprietor: No

Update or Correct Profile

Mailing Address

710 Oak St

Winnetka, IL 600932522

Phone: 8479866770

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.