Active NPI 1225098957 Individual Practitioner Male Practitioner

Dr. Stephen R Mcmahon , MD

Internal Medicine • Kaufman, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Stephen Mcmahon, MD is a certified Internal Medicine practicing in Kaufman, TX. With approximately 50 years of clinical experience since graduating from University Of Texas Southwestern Medical School At Dallas in 1976, Dr. Mcmahon delivers high-quality medical care to the local community at 850 ED HALL DR.

Dr. Mcmahon is affiliated with Texas Health Physicians Group and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, hospital discharge day management, more than, initial hospital care with straightforward or low-level medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

850 Ed Hall Dr

Kaufman, TX 751421861

Telephone 9729327349

Fax 9729327273

Associated Practice Facility / Clinic

🏢 Genesis Anesthesia, Pllc Facility NPI 1174974133

Medicare Profile & Education

Medical School

University Of Texas Southwestern Medical School At Dallas

Graduation Year

1976

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Kaufman, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

50 Yrs +23.7 yrs vs City Avg

City Avg: 26.3 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

9 Specialists

Practicing in Kaufman, TX (9538 Statewide)

Telehealth Adoption Rate

33.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

70.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mcmahon (50 Years) 50 Yrs

Kaufman Specialty Average (26.3 Years) 26.3 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	237	110	$238.00	$74.40
99239 Hospital discharge day management, more than 30 minutes	138	126	$353.00	$108.72
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	43	41	$455.00	$124.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	162	72	$238.00	$76.05
99239 Hospital discharge day management, more than 30 minutes	89	81	$353.00	$109.95
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	43	42	$455.00	$124.09
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	17	17	$670.00	$167.55

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	212	102	$238.00	$68.36
99239 Hospital discharge day management, more than 30 minutes	108	103	$353.00	$100.39
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	50	46	$670.00	$189.71
99217 Hospital observation care on day of discharge	43	42	$239.00	$68.50
99219 Hospital observation care, typically 50 minutes	12	12	$447.00	$126.61
99225 Subsequent observation care, typically 25 minutes per day	11	11	$239.00	$68.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	297	107	$238.00	$68.58
99239 Hospital discharge day management, more than 30 minutes	117	111	$353.00	$101.02
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	56	55	$670.00	$193.71
99217 Hospital observation care on day of discharge	52	51	$239.00	$69.82
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	27	$455.00	$131.34
99219 Hospital observation care, typically 50 minutes	22	21	$447.00	$126.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	304	133	$234.57	$71.32
99239 Hospital discharge day management, more than 30 minutes	166	149	$346.89	$104.87
99217 Hospital observation care on day of discharge	93	87	$234.74	$70.86
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	45	$662.33	$199.34
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	46	45	$444.91	$133.50
99219 Hospital observation care, typically 50 minutes	28	25	$439.00	$133.82
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	13	12	$336.46	$102.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	275	135	$229.00	$70.79
99239 Hospital discharge day management, more than 30 minutes	187	172	$340.00	$103.72
99217 Hospital observation care on day of discharge	95	92	$230.00	$71.00
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	46	$647.00	$196.80
99219 Hospital observation care, typically 50 minutes	47	45	$431.00	$132.34
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	36	36	$439.00	$133.20
99220 Hospital observation care, typically 70 minutes	17	17	$590.00	$181.28
99236 Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes	15	15	$695.00	$211.92

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	353	186	$229.00	$71.02
99239 Hospital discharge day management, more than 30 minutes	206	187	$340.00	$104.58
99217 Hospital observation care on day of discharge	99	92	$230.00	$71.16
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	98	93	$647.00	$197.76
99219 Hospital observation care, typically 50 minutes	44	41	$431.00	$132.68
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	33	$439.00	$133.33
99220 Hospital observation care, typically 70 minutes	31	30	$590.00	$181.69
99238 Hospital discharge day management, 30 minutes or less	31	30	$230.00	$71.14
99225 Subsequent observation care, typically 25 minutes per day	20	16	$230.00	$71.38
99235 Initial hospital care with same-day admission and discharge with moderate level of medical decision making, per day, if using time, at least 70 minutes	17	17	$545.00	$165.28
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	16	12	$330.00	$101.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	485	240	$213.86	$69.97
99239 Hospital discharge day management, more than 30 minutes	219	196	$313.37	$104.01
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	81	74	$566.20	$196.44
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	67	62	$418.43	$132.61
99217 Hospital observation care on day of discharge	57	56	$181.60	$70.45
99235 Initial hospital care with same-day admission and discharge with moderate level of medical decision making, per day, if using time, at least 70 minutes	28	28	$483.71	$154.40
99238 Hospital discharge day management, 30 minutes or less	23	22	$220.43	$70.15
99220 Hospital observation care, typically 70 minutes	19	19	$353.79	$180.30
99219 Hospital observation care, typically 50 minutes	15	15	$302.33	$131.83
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	13	12	$287.46	$101.20

Medical Specialties & State Licenses

CMS Verified: 2020-12-23

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License TX E6514

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

156329802 (TX)

Medicaid State Provider ID

156329801 (TX)

Commercial Insurance / Payer ID Medicare Railroad

680016195 (TX)

Hospital & Practice Group Affiliations

Texas Health Physicians Group

850 Ed Hall Dr, Kaufman, TX 751421861

Phone: 9729325555

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. Precious Ndukwe , MD

Internal Medicine

NPI 1063153310

Doctor of Medicine (M.D.)

Dr. Asif Masood , MD

Family Medicine

NPI 1194715656

Doctor of Medicine (M.D.)

Dr. Duhwan Kang , MD

Internal Medicine

NPI 1922430685

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 April 01, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location April 01, 2014

Registered at 850 ED HALL DR, KAUFMAN, TX 751421861 (Tel: 9729325555)

📍

Updated Business Mailing Address April 01, 2014

Registered at 850 ED HALL DR, KAUFMAN, TX 751421861 (Tel: 9729325555)

👤

Provider Name / Credentials Updated April 01, 2014

Recorded as STEPHEN MCMAHON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 01, 2014

Internal Medicine (License #E6514 in TX)

🟢

Initial NPI Registration & Enumeration March 25, 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: 1225098957

Entity Type:

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

Enumeration Date: March 25, 2006

Last Update: December 23, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

850 Ed Hall Dr

Kaufman, TX 751421861

Phone: 9729327349

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.