Regan H Marsh, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

230033 Issued in MA

Practice address

Brigham and Women'S Hospital
75 Francis St/Emergency Medicine
Boston, MA 02115

Phone

(617) 732-8070

NPI assigned

Jul 11, 2006

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA, TX2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Emergency Medicine

Education

Perelman School of Med at the University of Pennsylvania, 2004

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Brigham and Womens Physicians Organization IncGroup PAC ID 3870405988, 2,931 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
• Brigham and Women Faulkner Hospital Hospital, Jamaica Plain, MA, CCN 220119
• Sage Memorial Hospital Hospital, Ganado, AZ, CCN 031309
• Fort Defiance Indian Hospital Hospital, Ft. Defiance, AZ, CCN 030071

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: marsh.regan.bwh@direct.partners.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497
  Medicare reassignment Care Compare group
• The Fort Defiance Indian Hospital Board, Incorporation

  • General Acute Care Hospital
  • Fort Defiance, AZ
  • NPI 1477876639

  TX

  Medicare reassignment NPD
• Brigham and Women'S Hospital

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1093885816
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  Care Compare affiliation
• Brigham and Women'S Faulkner Hospital, Inc

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1578677811
  Care Compare affiliation
• Brigham and Women'S Faulkner Hospital, Inc.

  • Psychiatric Hospital Unit
  • Boston, MA
  • NPI 1033121025
  Care Compare affiliation
• Navajo Health Foundation-Sage Memorial Hospital Inc

  • Critical Access Hospital Clinic/Center
  • Ganado, AZ
  • NPI 1518957398
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1152576000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741910400000",
    "number": "1740215730",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "16 WOODHOLM RD",
            "city": "MANCHESTER BY THE SEA",
            "state": "MA",
            "postal_code": "019441042",
            "telephone_number": "617-435-9171"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "BRIGHAM AND WOMEN'S HOSPITAL",
            "address_2": "75 FRANCIS ST/EMERGENCY MEDICINE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-732-8070"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "Corner of Route N12 and N7",
            "address_purpose": "LOCATION",
            "city": "Fort Defiance",
            "state": "AZ",
            "postal_code": "865040649",
            "country_code": "US",
            "telephone_number": "928-729-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARSH",
        "first_name": "REGAN",
        "middle_name": "H",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-11",
        "last_updated": "2025-03-14",
        "certification_date": "2025-03-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MA",
            "license": "230033",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sophie Atwood Marsden, LMHC
• Luckson Marseille
• Sadrack Marseille
• David Marsh
• Katherine C Marsh
• Shawn M Marsh, DMD
• Stephen Matthew Marsh, M.D.
• Veronica Marie Marsh
• Alyssa Marshall, D.O.
• Andrew Dean Alex Marshall, M.D.

• Emergency Medicine Physician in Boston, MA
• Providers in Boston, MA by specialty
• Emergency Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 14, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.