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: July 19, 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 maintains a secondary practice location in Fort Defiance.

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
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

Secondary Practice Location 1

Location 1Corner of Route N12 and N7Fort Defiance, AZ 86504-0649 · Phone (928) 729-8000

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 2024 & 2026 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.

Emergency Medicine (Medical Toxicology)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET, NEVILLE HOUSE
BOSTON, MA 02115
Internal Medicine
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Physician Assistant
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Nurse Practitioner (Adult Health)
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Nurse Anesthetist, Certified Registered
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS ST
BOSTON, MA 02115
Nurse Practitioner
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET ADM A BUILDING, 3RD FLOOR
BOSTON, MA 02115
Nurse Practitioner
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115
Physical Therapist
BRIGHAM AND WOMEN'S HOSPITAL, 75 FRANCIS STREET
BOSTON, MA 02115

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1740215730, enumerated as an "individual" on July 11, 2006.

The provider is located at BRIGHAM AND WOMEN'S HOSPITAL 75 FRANCIS ST/EMERGENCY MEDICINE BOSTON, MA 02115 and the phone number is (617) 732-8070.

Emergency Medicine with taxonomy code 207P00000X.

Regan Marsh is affiliated with: BRIGHAM AND WOMEN'S HOSPITAL and FAULKNER HOSPITAL-BRIGHAM AND WOMEN'S.