Active NPI 1114457363 Individual Practitioner Male Practitioner

Dr. Da'marcus E Baymon , MD

Emergency Medicine • Boston, MA

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Da'Marcus Baymon, MD is a registered Emergency Medicine practitioner in Boston, MA. With approximately 9 years of clinical practice since graduating from University Of Texas Medical Branch At Galveston in 2017, Dr. Baymon provides healthcare services at the registered practice location at MASSACHUSETTS GENERAL HOSPITAL.

Dr. Baymon maintains professional affiliations with Massachusetts General Physicians Organization Inc, Brigham And Womens Physicians Organization Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include emergency department visit for life threatening or functioning severity, critical care, first, emergency department visit with moderate level of medical decision making. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

Massachusetts General Hospital
55 Fruit St.

Boston, MA 02114

Telephone 6177244184

Medicare Profile & Education

Medical School

University Of Texas Medical Branch At Galveston

Graduation Year

2017

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Boston, MA

Experienced Practitioner (5-10 Yrs)

Practitioner Clinical Experience

9 Yrs -6.4 yrs vs City Avg

City Avg: 15.4 Yrs

State Avg: 24.2 Yrs

Regional Practice Density

546 Specialists

Practicing in Boston, MA (1875 Statewide)

Telehealth Adoption Rate

1.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Baymon (9 Years) 9 Yrs

Boston Specialty Average (15.4 Years) 15.4 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	206	203	$720.93	$177.59
99291 Critical care, first 30-74 minutes	71	71	$884.01	$218.00
99284 Emergency department visit with moderate level of medical decision making	43	38	$496.12	$122.48
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	30	30	$805.00	$179.16
99239 Hospital discharge day management, more than 30 minutes	27	27	$483.00	$119.72
93308 Ultrasound of heart, follow-up	25	25	$106.36	$25.41
76604 Ultrasound scan of chest	14	14	$114.79	$27.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	11	11	$408.00	$102.24

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	186	183	$712.31	$183.17
99291 Critical care, first 30-74 minutes	70	70	$881.37	$224.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	39	$404.13	$103.86
99284 Emergency department visit with moderate level of medical decision making	39	38	$490.38	$126.10
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	34	$805.00	$184.30
93308 Ultrasound of heart, follow-up	33	33	$103.00	$26.25
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	18	$599.00	$152.50
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$613.00	$141.93
99239 Hospital discharge day management, more than 30 minutes	15	15	$448.67	$122.66
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	13	13	$860.00	$221.34

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	276	273	$702.50	$187.19
99284 Emergency department visit with moderate level of medical decision making	105	104	$484.43	$128.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	65	65	$397.51	$106.21
99291 Critical care, first 30-74 minutes	58	58	$863.98	$232.09
99217 Hospital observation care on day of discharge	47	47	$288.04	$77.58
93308 Ultrasound of heart, follow-up	44	44	$100.48	$27.02
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	37	37	$550.73	$146.25
99220 Hospital observation care, typically 70 minutes	32	32	$748.78	$191.32
99283 Emergency department visit with low level of medical decision making	28	27	$361.29	$76.30
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	27	27	$584.19	$157.85
99213 Established patient office or other outpatient visit, typically 15 minutes	18	18	$269.33	$72.25
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	14	14	$42.00	$8.95
99226 Subsequent observation care, typically 35 minutes per day	13	12	$407.31	$108.65
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	11	11	$747.00	$198.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	53	53	$693.00	$190.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	23	$396.00	$108.81
99284 Emergency department visit with moderate level of medical decision making	12	12	$476.00	$130.89
99213 Established patient office or other outpatient visit, typically 15 minutes	11	11	$268.00	$73.61

Medical Specialties & State Licenses

CMS Verified: 2026-02-04

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License MA 289257

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.

Hospital & Practice Group Affiliations

Massachusetts General Physicians Organization Inc

55 Fruit St, Boston, MA 021142696

Phone: 6177240287

Brigham And Womens Physicians Organization Inc

75 Francis St, Boston, MA 021156110

Phone: 6177325500

Secondary Practice Locations

75 Francis St

Boston, MA 021156110

Phone: 6177325500

Practice Associates & Co-Workers

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

35 Associated Practitioners

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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) February 04, 2026

Emergency Medicine (License #289257 in MA)

✅

NPI Profile Active June 19, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location June 19, 2017

Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST., BOSTON, MA 02114 (Tel: 6177244184)

📍

Updated Business Mailing Address June 19, 2017

Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST., BOSTON, MA 02114 (Tel: 6177244184)

👤

Provider Name / Credentials Updated June 19, 2017

Recorded as DA'MARCUS BAYMON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 19, 2017

Emergency Medicine (License #272489 in MA)

🟢

Initial NPI Registration & Enumeration June 19, 2017

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: 1114457363

Entity Type:

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

Enumeration Date: June 19, 2017

Last Update: February 04, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Massachusetts General Hospital, 55 Fruit St.

Boston, MA 02114

Phone: 6177244184

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.