Christopher Calkins, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A195245 Issued in CA

Practice address

300 Pasteur Dr RM G306
Stanford, CA 94305-2200

Phone

(650) 723-5948

NPI assigned

Apr 2, 2021

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

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1617321600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1714867200000",
    "number": "1144809666",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR RM G306",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-5948"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156110",
            "country_code": "US",
            "telephone_number": "617-732-5775",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALKINS",
        "first_name": "CHRISTOPHER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-02",
        "last_updated": "2024-05-05",
        "certification_date": "2024-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A195245",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bertan Deniz Cakir, MD
• Heather Siobhan Calderwood, PA-C
• Laurel Calderwood, MS, CGC
• Jillian Scott Caldwell, DO
• Nolan John Caldwell, M.D.
• Mallory Erin Frances Callahan, NP
• Samantha Smrcka Callan, PA-C
• Marian Ann Callanan, CNS
• Natalia Fijalkowski Callaway, MD
• Charles Phillip Callihan Jr., MD, PHD

• Internal Medicine Physician in Stanford, CA
• Providers in Stanford, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 5, 2024; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.