Tiffany Sia, M.D.

Primary specialty

Gynecologic Oncology PhysicianTaxonomy code 207VX0201X

License

A202617 Issued in CA

Practice address

910 Campisi Way Ste 2a
Campbell, CA 95008-2351

Phone

(408) 827-4274

NPI assigned

Apr 5, 2017

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Obstetrics/GynecologyAlso: Gynecological Oncology

Education

Columbia University College of Physicians and Surgeons, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Washington Township Medical FoundationGroup PAC ID 2860687050, 125 clinicians

Bay Area Gynecology Oncology IncGroup PAC ID 7618907148, 10 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Good Samaritan Hospital Hospital, San Jose, CA, CCN 050380
• El Camino Health Hospital, Mountain View, CA, CCN 050308
• Washington Hospital Hospital, Fremont, CA, CCN 050195

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tsia25038@mskcc.direct-ci.com

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.

• Bay Area Gynecology Oncology Inc

  • Specialist
  • Campbell, CA
  • NPI 1891801122
  Medicare reassignment Care Compare group NPD
• Washington Township Medical Foundation

  • Internal Medicine Physician
  • Fremont, CA
  • NPI 1346557014
  Medicare reassignment Care Compare group
• El Camino Health Medical Network, LLC

  • Multi-Specialty Clinic/Center
  • San Jose, CA
  • NPI 1164880761
  NPD (past)
• Washington Township Medical Group

  • Family Medicine Physician
  • Fremont, CA
  • NPI 1174675417
  NPD (past)

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

• El Camino Hospital

  • General Acute Care Hospital
  • Mountain View, CA
  • NPI 1093712374
  Care Compare affiliation
• El Camino Hospital

  • General Acute Care Hospital
  • Los Gatos, CA
  • NPI 1417199340
  Care Compare affiliation
• El Camino Hospital

  • General Acute Care Hospital
  • Los Gatos, CA
  • NPI 1457594087
  Care Compare affiliation
• Good Samaritan Hospital, L.P.

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1437103777
  Care Compare affiliation
• Washington Township Hospital District

  • General Acute Care Hospital
  • Fremont, CA
  • NPI 1780614685
  Care Compare affiliation

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

{
    "created_epoch": "1491350400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754438400000",
    "number": "1760915912",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "910 CAMPISI WAY STE 2A",
            "city": "CAMPBELL",
            "state": "CA",
            "postal_code": "950082351",
            "telephone_number": "408-827-4274"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "910 CAMPISI WAY STE 2A",
            "city": "CAMPBELL",
            "state": "CA",
            "postal_code": "950082351",
            "telephone_number": "408-827-4274"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIA",
        "first_name": "TIFFANY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-05",
        "last_updated": "2025-08-06",
        "certification_date": "2025-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VX0201X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecologic Oncology",
            "state": "CA",
            "license": "A202617",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Dong-Youn Shin, D. D. S.
• Susan Mary Shirron
• Tatyana Shkolnikov Klebanov, MS, OTR/L
• Naji Iyad Shtayyeh, LMFT
• Irena Shwartzman
• Khushi Sibal, AMFT
• Judith H. Siegel, PH.D, MFT(INACTIVE
• Penni Siemens, M.S., CCC-SLP
• Raquel Sierra
• Alicia Siese

• Gynecologic Oncology Physician in Campbell, CA
• Providers in Campbell, CA by specialty
• Gynecologic Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 6, 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.