William Dufficy, MD (EXPECTED 5/2018)

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

A180816 Issued in CA

Practice address

1510 Capitola Rd
Santa Cruz, CA 95062-2912

Phone

(831) 427-3500

Fax

(831) 457-2486

NPI assigned

Mar 31, 2018

Sex

Male

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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 and National Provider Directory roles.

• County of Santa Clara

  dba SCVMC Physician Services

  • Anesthesiology Physician
  • San Jose, CA
  • NPI 1588721500

  Pediatrics

  Medicare reassignment NPD
• County of Santa Clara

  dba Valley Health Center Alexian

  • Federally Qualified Health Center (FQHC)
  • San Jose, CA
  • NPI 1629301346
  Medicare reassignment NPD
• County of Santa Clara

  dba Josefina Narvaez Mental Health Center MH Aoa

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • San Jose, CA
  • NPI 1699885079
  Medicare reassignment NPD
• County of Santa Clara

  dba Valley Health Center Lundy

  • Federally Qualified Health Center (FQHC)
  • San Jose, CA
  • NPI 1043354020
  NPD
• County of Santa Clara

  dba Valley Health Center Milpitas

  • Federally Qualified Health Center (FQHC)
  • Milpitas, CA
  • NPI 1285629899
  NPD
• County of Santa Clara

  dba SCVMC Outpatient Pharmacy

  • Pharmacy
  • San Jose, CA
  • NPI 1891871919
  NPD

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

{
    "created_epoch": "1522454400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785715200000",
    "number": "1033615984",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 542",
            "city": "SANTA CRUZ",
            "state": "CA",
            "postal_code": "950610542",
            "telephone_number": "831-427-3500",
            "fax_number": "831-427-7785"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1510 CAPITOLA RD",
            "city": "SANTA CRUZ",
            "state": "CA",
            "postal_code": "950622912",
            "telephone_number": "831-427-3500",
            "fax_number": "831-457-2486"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUFFICY",
        "first_name": "WILLIAM",
        "credential": "MD (EXPECTED 5/2018)",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-31",
        "last_updated": "2026-08-03",
        "certification_date": "2026-08-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A180816",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Juliet Drumm
• Daniel Perry Dryden III, MA
• Dsme Medicine Inc (The Key Addiction Treatment Center)
• Jocelyn Vaughnes Dubin, RD
• Jaqueline Dubon Cruz
• Lea Mikayla Dulay
• Fiona Linsey Dulbecco, M.D.
• Gealina Dun-Melli, MD
• Patricia Dunbar, RN
• Robert Jake Dunbar

• Pediatrics Physician in Santa Cruz, CA
• Providers in Santa Cruz, CA by specialty
• Pediatrics Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 3, 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.