Samuel Joseph McMillen, MD

Primary specialty

Student in an Organized Health Care Education/Training ProgramTaxonomy code 390200000X

Practice address

1493 Cambridge St
Cambridge, MA 02139-1047

Phone

(617) 665-1000

NPI assigned

Mar 22, 2020

Last updated

Feb 25, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

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 1

Specialty

Psychiatry

Education

Other, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Cambridge Public Health CommissionGroup PAC ID 8921910894, 654 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Cambridge Health Alliance Hospital, Cambridge, MA, CCN 220011

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: smcmillen255285@direct.bilh.masshiway.net
• Direct secure messaging: smcmillen99486@direct.challiance.masshiway.net

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

• Cambridge Public Health Commission

  dba Cambridge Health Alliance

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1487603585
  Medicare reassignment Care Compare group NPD
• Cambridge Public Health Commission

  dba Cambridge Health Alliance

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1932313228
  NPD

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

• Cambridge Public Health Commission

  • Clinic/Center
  • Cambridge, MA
  • NPI 1306908405

  Hospital

  Care Compare affiliation
• Cambridge Public Health Commission

  dba Cambridge Health Alliance

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1487603585
  Care Compare affiliation

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

{
    "created_epoch": "1584835200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740441600000",
    "number": "1578199436",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391047",
            "telephone_number": "617-665-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391047",
            "telephone_number": "617-665-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMILLEN",
        "first_name": "SAMUEL",
        "middle_name": "JOSEPH",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-22",
        "last_updated": "2025-02-25",
        "certification_date": "2025-02-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MA",
            "license": "1014068",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christine L McLellan, PHARM.D.
• Devon Emily McMahon
• Fei McMahon, PT, DPT
• John C McManama, DDS
• Linda J McMaster, LCSW
• William McMullen, PHD
• Diane Perry McMullin, M.D.
• Katelyn Tulp McNair, WHNP-BC
• Lindsay A McNair, M.D.
• Abigail Morin McNally, PH.D.

• Student in an Organized Health Care Education/Training Program in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Student in an Organized Health Care Education/Training Program in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 25, 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.