Sophia May Frohberg

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

1100 Van Ness Ave
San Francisco, CA 94109-6978

Phone

(415) 600-1000

NPI assigned

May 9, 2023

Last updated

Oct 24, 2025By the provider in NPPES

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

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

Physician Assistant

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Sutter Valley Medical FoundationGroup PAC ID 9830094515, 2,473 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Medical Center Hospital, Modesto, CA, CCN 050557

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sfrohberg673502@hisp.ehr.sutterhealth.org

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.

• Sutter Valley Medical Foundation

  dba Sutter Gould Medical Foundation

  • Multi-Specialty Clinic/Center
  • Modesto, CA
  • NPI 1669846986
  Medicare reassignment Care Compare group
• Sutter Bay Medical Foundation

  dba Sutter Samaritan Surgery Center

  • Ambulatory Surgical Clinic/Center
  • San Jose, CA
  • NPI 1033817168
  Medicare reassignment NPD
• Sutter Bay Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • Los Altos, CA
  • NPI 1568851327
  Medicare reassignment NPD
• Sutter Bay Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • Mountain View, CA
  • NPI 1982845186
  Medicare reassignment NPD
• Sutter Bay Medical Foundation

  dba Palo Alto Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • Palo Alto, CA
  • NPI 1104067115
  Medicare reassignment
• Sutter Bay Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • Fremont, CA
  • NPI 1497996524
  Medicare reassignment
• Sutter Bay Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • San Carlos, CA
  • NPI 1164840088
  NPD
• Sutter Bay Medical Foundation

  • Ambulatory Surgical Clinic/Center
  • Fremont, CA
  • NPI 1306241534
  NPD
• Sutter Valley Medical Foundation

  • Durable Medical Equipment & Medical Supplies
  • Tracy, CA
  • NPI 1720930712
  NPD
• Sutter Valley Medical Foundation

  • Multi-Specialty Clinic/Center
  • Sacramento, CA
  • NPI 1952327256

  Physician Assistant

  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Sutter Valley Hospitals

  dba Memorial Medical Center

  • General Acute Care Hospital
  • Modesto, CA
  • NPI 1699129601
  Care Compare affiliation

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

{
    "created_epoch": "1683590400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1285324699",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 276950",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958276950"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 VAN NESS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941096978",
            "telephone_number": "415-600-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "100 Baldwin Blvd",
            "address_purpose": "LOCATION",
            "city": "Fishersville",
            "state": "VA",
            "postal_code": "229392375",
            "country_code": "US",
            "telephone_number": "817-823-8833",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FROHBERG",
        "first_name": "SOPHIA",
        "middle_name": "MAY",
        "name_prefix": "Miss",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-05-09",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• FRN San Francisco, LLC (FRN Outpatient San Francisco)
• Cecilia Froberg
• Tandra Froehlich Childress, MA, ATR, LMFT
• Mary L Froehlich, GNP
• Ryan T. Froemming
• Paul A Frohna, MD, PHD
• Ashley E Frolich, LCSW
• Karen Bronk Froming, PHD
• Erika Ilene Frommer
• Front Porch Communities and Services (San Francisco Towers)

• Physician Assistant in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 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.