Michelle Ariana Wedemeyer, MD, PHD

Primary specialty

Neurological Surgery PhysicianTaxonomy code 207T00000X

License

35.145805 Issued in OH

Practice address

550 16TH Street
San Francisco, CA 94143

Phone

(415) 476-3581

Fax

(415) 476-5349

NPI assigned

Feb 6, 2015

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

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in CA, OH2 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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/2229/brand/3/csg/621/fhir/r4
• FHIR API: https://hkc.nationwidechildrens.org/FHIR/MYCHART/api/FHIR/R4

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.

• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104

  Neurological Surgery

  Medicare reassignment NPD
• University of California San Francisco

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment NPD
• Children'S Surgical Associates, Corporation

  • Pediatric Surgery Physician
  • Columbus, OH
  • NPI 1417905324
  Medicare reassignment NPD
• Nationwide Children'S Hospital

  • Multi-Specialty Clinic/Center
  • Columbus, OH
  • NPI 1851179873
  Medicare reassignment NPD
• Northwest Pediatric Specialists, LLC

  • Pediatrics Physician
  • Toledo, OH
  • NPI 1033709100
  Medicare reassignment NPD
• UCSF Medical Group Business Services

  • Health Service Clinic/Center
  • San Francisco, CA
  • NPI 1194115246
  NPD
• University of California San Francisco

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1164512851
  NPD
• University of California San Francisco

  • Community/Retail Pharmacy
  • San Francisco, CA
  • NPI 1659141711
  NPD
• Nationwide Children'S Hospital

  • Durable Medical Equipment & Medical Supplies
  • Columbus, OH
  • NPI 1447061262
  NPD
• Nationwide Children'S Hospital

  • General Acute Care Hospital
  • Columbus, OH
  • NPI 1134152986
  NPD (past)

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

{
    "created_epoch": "1423180800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773792000000",
    "number": "1316338767",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "550 16TH STREET",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94143",
            "telephone_number": "415-476-3581",
            "fax_number": "415-476-5349"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "550 16TH STREET",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "94143",
            "telephone_number": "415-476-3581",
            "fax_number": "415-476-5349"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "555 S 18th St",
            "address_purpose": "LOCATION",
            "city": "Columbus",
            "state": "OH",
            "postal_code": "432052654",
            "country_code": "US",
            "telephone_number": "614-722-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2222 Cherry St Ste 1800",
            "address_purpose": "LOCATION",
            "city": "Toledo",
            "state": "OH",
            "postal_code": "436082679",
            "country_code": "US",
            "telephone_number": "419-251-8027",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "700 Childrens Dr",
            "address_purpose": "LOCATION",
            "city": "Columbus",
            "state": "OH",
            "postal_code": "432052664",
            "country_code": "US",
            "telephone_number": "614-722-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2213 Cherry St",
            "address_purpose": "LOCATION",
            "city": "Toledo",
            "state": "OH",
            "postal_code": "436082603",
            "country_code": "US",
            "telephone_number": "419-251-4300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WEDEMEYER",
        "first_name": "MICHELLE",
        "middle_name": "ARIANA",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-02-06",
        "last_updated": "2026-03-18",
        "certification_date": "2026-03-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "OH",
            "license": "35.145805",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0493471",
            "state": "OH"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CGS - MEDICARE",
            "identifier": "H932960",
            "state": "OH"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Ariana Weckstein
• Kimberly Shadean Wedderburn, CTRS
• Charles Maxwell Weddington, M.D.
• Joel A Weddington, MD
• Renee Esther Wedell, BCBA
• Kenneth K Wee, D.M.D.
• Weekend Health of New Jersey P.C.
• Weekend Health of Pennsylvania, P.C.
• Weekend Health of Texas, PA
• Weekend Health of Texas, PA

• Neurological Surgery Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Neurological Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 18, 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.