Mark R. Selby, D.O.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MA43107 Issued in MA

Practice address

73 Eagle St
Pittsfield, MA 01201-4714

Phone

(413) 499-2672

Fax

(413) 447-8825

NPI assigned

Jun 15, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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

{
    "created_epoch": "1150329600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1265476782",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1007",
            "city": "ASHFIELD",
            "state": "MA",
            "postal_code": "013301007",
            "telephone_number": "413-499-2672",
            "fax_number": "413-447-8825"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "73 EAGLE ST",
            "city": "PITTSFIELD",
            "state": "MA",
            "postal_code": "012014714",
            "telephone_number": "413-499-2672",
            "fax_number": "413-447-8825"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SELBY",
        "first_name": "MARK",
        "middle_name": "R.",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "MA43107",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ID#",
            "identifier": "2464892",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Internal Medicine Physician in Pittsfield, MA
• Providers in Pittsfield, MA by specialty
• Internal Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.