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REGAN H MARSH M.D.
NPI 1740215730
Emergency Medicine in Boston, MA

Active since July 11, 2006PECOS EnrolledAccepts Medicare Assignment
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST/EMERGENCY MEDICINE, BOSTON, MA 02115(617) 732-8070 Get Directions Write a Review

NPPES record last updated: March 14, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 14, 2025, Jan 5, 2023 (2 updates tracked since 2023).

About Regan H Marsh M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

REGAN H MARSH M.D. (NPI 1740215730) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (230033) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2004).

NPPES Registry Identity

NPI1740215730
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameREGAN H MARSHCredential: M.D.
Location AddressBRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST/EMERGENCY MEDICINEBoston, MA 02115
Mailing Address16 Woodholm RdManchester By The Sea, MA 01944-1042 · (617) 435-9171
Phone(617) 732-8070
Sole ProprietorNo
Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 2004
Enumeration DateJuly 11, 2006
Last NPPES UpdateMarch 14, 20252 updates tracked since enumeration
NPPES CertifiedMarch 12, 2025
✔ NPI 1740215730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MA · 230033
Definition
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.
BRIGHAM AND WOMEN'S HOSPITAL, Boston, MA 02115
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Regan H Marsh M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9739225772
PECOS Enrollment IDI20091006000354
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
86 services86 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
24 services24 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Faulkner Hospital-Brigham And Women's

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220119
Location1153 Centre StreetBoston, MA 02130 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. JOANNE RUEL WEINTRAUB
Nurse Practitioner
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET ADM A BUILDING, 3RD FLOOR
BOSTON, MA 02115
Suffolk County (617) 732-7129
GREGORY STEPHEN COUPER MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
BRIGHAM AND WOMEN'S HOSPITAL, DIVISION OF CARDIAC SURGERY
BOSTON, MA 02115
Suffolk County (617) 732-5500
DR. SIDDHARTH JAGDISH TRIVEDI BSC, BMEDSCI, MBBS,
Student in an Organized Health Care Education/Training Program
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Suffolk County (617) 732-6273
SHELSEY W. JOHNSON MD
Internal Medicine (Pulmonary Disease)
BRIGHAM AND WOMEN'S HOSPITAL, 15 FRANCIS STREET, PBB CA3
BOSTON, MA 02115
Suffolk County (617) 525-9733
MRS. CAROL HOLTON GLASSROTH RN, MSN, APN
Nurse Practitioner (Adult Health)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (617) 378-5485
JOHN PATRICK FINNIGAN JR. MD, PHD
Student in an Organized Health Care Education/Training Program
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Suffolk County (617) 732-5500
DR. AIDEN Y FENG MD, MBA
Anesthesiology
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST, CWN-L1
BOSTON, MA 02115
Suffolk County (484) 744-2177
FREDERIC RACICOT M.D.
Student in an Organized Health Care Education/Training Program
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Suffolk County (617) 732-5500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Regan Marsh's NPI number?

The NPI number for Regan Marsh is 1740215730. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Where is Regan Marsh located?

Regan Marsh practices at Brigham And Women's Hospital 75 Francis St/Emergency Medicine, Boston, MA 02115. The listed phone number is (617) 732-8070.

What is Regan Marsh's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Regan Marsh enrolled in Medicare?

Yes. Regan Marsh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Regan Marsh affiliated with any hospitals?

According to CMS data, Regan Marsh is affiliated with Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.

When was this NPI record last updated?

The NPPES record for Regan Marsh was last updated on March 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.