Karl Proppe, MD

Primary specialty

SpecialistTaxonomy code 174400000X

License

37618 Issued in MA

Practice address

640 Memorial Dr
Cambridge, MA 02139-4853

Phone

(781) 255-0555

Fax

(781) 255-0594

NPI assigned

Jul 12, 2005

Last updated

Jul 13, 2026By 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 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Pathology Services Inc

  • Specialist
  • Cambridge, MA
  • NPI 1104829555
  NPD (past)
• Pathology Services Inc

  • Clinical Medical Laboratory
  • Cambridge, MA
  • NPI 1861495376
  NPD (past)

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

{
    "created_epoch": "1121126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1831197102",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "640 MEMORIAL DR",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021394853",
            "telephone_number": "781-255-0555",
            "fax_number": "781-255-0594"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "640 MEMORIAL DR",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021394853",
            "telephone_number": "781-255-0555",
            "fax_number": "781-255-0594"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PROPPE",
        "first_name": "KARL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "MA",
            "license": "37618",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "6169767",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Tiffany Privat
• Naomi Priver, MD
• Amber Corinne Procter, LPN
• Professional Ambulance & Oxygen SVC, Inc
• Valerie Pronio-Stelluto, MD
• Prospect Dental Group, L.L.C.
• Richard Prudencio, M.D.
• Peter Winsor Pruyn, ED.M., M.A.
• Susan A Pruyn, NP
• Psyche Care, Inc.

• Specialist in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Specialist 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.