Active NPI 1801839550 Individual Practitioner Male Practitioner

Dr. Brian Joseph Mcmahon , MD

Emergency Medicine • Patchogue, NY

Professional Overview & Biography Verified Profile Summary

Dr. Brian Mcmahon, MD is a registered healthcare professional specializing in Emergency Medicine in Patchogue, NY. Practice services are available at 101 HOSPITAL RD under active NPI credentials.

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, initial hospital care with moderate level of 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

101 Hospital Rd

Patchogue, NY 11772

Telephone 6316872953

Fax 6106176280

Associated Practice Facility / Clinic

🏢 Long Island Community Hospital At Nyu Langone Health Facility NPI 1053354100

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Patchogue, NY

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 17.9 Yrs

State Avg: 22.3 Yrs

Regional Practice Density

22 Specialists

Practicing in Patchogue, NY (5148 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

62.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

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	339	332	$520.00	$195.76
99284 Emergency department visit with moderate level of medical decision making	88	88	$359.49	$135.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	304	298	$503.75	$205.10
99284 Emergency department visit with moderate level of medical decision making	97	97	$338.04	$140.31
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$518.08	$198.61
99283 Emergency department visit with low level of medical decision making	12	12	$210.42	$84.33
99238 Hospital discharge day management, 30 minutes or less	12	12	$295.00	$92.80
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$405.00	$150.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	206	202	$500.00	$216.46
99284 Emergency department visit with moderate level of medical decision making	57	56	$335.00	$147.03
99283 Emergency department visit with low level of medical decision making	32	32	$200.00	$89.00
99217 Hospital observation care on day of discharge	13	13	$185.00	$84.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	238	236	$478.21	$219.79
99284 Emergency department visit with moderate level of medical decision making	53	50	$323.96	$150.17
99217 Hospital observation care on day of discharge	33	33	$185.00	$86.02
99219 Hospital observation care, typically 50 minutes	29	29	$342.24	$160.28
99283 Emergency department visit with low level of medical decision making	19	18	$194.47	$88.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	221	220	$465.00	$211.20
99284 Emergency department visit with moderate level of medical decision making	40	38	$320.00	$145.07
99217 Hospital observation care on day of discharge	30	30	$182.00	$86.82
99219 Hospital observation care, typically 50 minutes	16	16	$335.31	$161.38
99283 Emergency department visit with low level of medical decision making	14	14	$185.00	$78.02
99220 Hospital observation care, typically 70 minutes	13	13	$450.77	$220.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	216	211	$465.00	$199.10
99284 Emergency department visit with moderate level of medical decision making	57	54	$320.00	$135.52
99217 Hospital observation care on day of discharge	39	39	$171.67	$82.63
99283 Emergency department visit with low level of medical decision making	28	28	$185.00	$71.48
99219 Hospital observation care, typically 50 minutes	27	25	$325.00	$155.89

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	255	244	$434.47	$198.08
99284 Emergency department visit with moderate level of medical decision making	68	66	$320.00	$134.60
99217 Hospital observation care on day of discharge	31	30	$163.23	$83.95
99283 Emergency department visit with low level of medical decision making	31	31	$185.00	$71.00
99219 Hospital observation care, typically 50 minutes	20	20	$325.00	$155.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	189	186	$403.81	$199.06
99284 Emergency department visit with moderate level of medical decision making	55	55	$320.00	$134.74
99283 Emergency department visit with low level of medical decision making	36	35	$185.00	$71.04
99217 Hospital observation care on day of discharge	23	23	$160.00	$83.54
99219 Hospital observation care, typically 50 minutes	18	18	$297.50	$155.22

Medical Specialties & State Licenses

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License NY 224721

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.

Practice Associates & Co-Workers

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

40 Associated Practitioners

Carina Loscalzo , PA

Physician Assistant

NPI 1003857335

Physician Assistant

Dr. Scott Slagel , MD

Emergency Medicine

NPI 1003862624

Doctor of Medicine (M.D.)

Gina Baird , PA

Physician Assistant

NPI 1003879347

Physician Assistant

David Jackson , PA

Physician Assistant

NPI 1013950302

Physician Assistant

Edwin Luciano , PA

Physician Assistant

NPI 1013957901

Physician Assistant

Dr. Donald Jenkins , DO

Emergency Medicine

NPI 1013964071

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 101 HOSPITAL RD, PATCHOGUE, NY 11772 (Tel: 6316872953)

📍

Updated Business Mailing Address July 08, 2007

Registered at PO BOX 13700-1378, PHILADELPHIA, PA 191911378 (Tel: 8006662455)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as BRIAN MCMAHON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Emergency Medicine (License #224721 in NY)

🟢

Initial NPI Registration & Enumeration June 13, 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: 1801839550

Entity Type:

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

Enumeration Date: June 13, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 13700-1378

Philadelphia, PA 191911378

Phone: 8006662455

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.