Tamsin Barker, MSN, NNP-BC

Primary specialty

Critical Care Neonatal Nurse PractitionerTaxonomy code 363LN0005X

License

95036643 Issued in CA

Practice address

1975 4TH St
San Francisco, CA 94143-2351

Phone

(415) 290-7760

NPI assigned

Sep 8, 2025

Last updated

Sep 9, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other names 1

• Tamsin Summers Former name

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2024

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science - Nursing, Nurse Practitioner

State licenses

Practice roles

Locations

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.

• UCSF Dept of Surgery

  • Surgery Physician
  • San Francisco, CA
  • NPI 1477627537
  Medicare reassignment NPD
• UCSF Medical Group Business Services

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1477624104
  Medicare reassignment NPD
• UCSF Pediatrics Associates

  dba UCSF Medical Center

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1376614016
  Medicare reassignment NPD
• University of California San Francisco

  dba UCSF Pediatrics Group

  • Pediatrics Physician
  • San Francisco, CA
  • NPI 1861578973
  Medicare reassignment NPD
• UCSF Medical Group Business Services

  dba UCSF Orthotic and Prosthetic Center - Gateway Medical Building

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

  dba UCSF Surgical Group

  • Surgery Physician
  • San Francisco, CA
  • NPI 1346329380
  NPD
• University of California San Francisco

  dba UCSF Outpatient Pharmacy at Parnassus

  • Community/Retail Pharmacy
  • San Francisco, CA
  • NPI 1659141711
  NPD

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

{
    "created_epoch": "1757289600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757376000000",
    "number": "1538049721",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "155 PINE HILLS LN",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946111534",
            "telephone_number": "224-578-1780"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1975 4TH ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432351",
            "telephone_number": "415-290-7760"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BARKER",
        "first_name": "TAMSIN",
        "credential": "MSN, NNP-BC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-09-08",
        "last_updated": "2025-09-09",
        "certification_date": "2025-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LN0005X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Neonatal, Critical Care",
            "state": "CA",
            "license": "95036643",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "TAMSIN",
            "last_name": "SUMMERS",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Bariendo Medical Group of New Jersey
• Joel M Barish, M.D.
• Peter Barish, M.D.
• Allison Barker, M.D.
• John Carter Barker, M.D.
• Nazanin Barkhodari
• Kirsten Elizabeth Barkin, CPO
• Michael Edward Barkin, DDS
• Anthony J. Barkovich, M.D.
• Emil Barkovich, MD

• Critical Care Neonatal Nurse Practitioner in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Critical Care Neonatal Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 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.