Catherine A Ryan, D.C.

Primary specialty

ChiropractorTaxonomy code 111N00000X

License

DC0259240 Issued in CA

Practice address

3788 Fabian Way
Palo Alto, CA 94303-4601

Phone

(650) 714-1477

NPI assigned

Nov 8, 2006

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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.

• Dr. Lisa Pierotti Healthsource Chiropractic and Nutrition, Inc.

  • Nutrition Chiropractor
  • San Carlos, CA
  • NPI 1578705596
  NPD (past)
• Linford Chiropractic Center

  • Chiropractor
  • San Carlos, CA
  • NPI 1700011152
  NPD (past)

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

{
    "created_epoch": "1162944000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741046400000",
    "number": "1326118605",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3788 FABIAN WAY",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943034601",
            "telephone_number": "650-714-1477"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3788 FABIAN WAY",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943034601",
            "telephone_number": "650-714-1477"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RYAN",
        "first_name": "CATHERINE",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "D.C.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-11-08",
        "last_updated": "2025-03-04",
        "certification_date": "2025-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "NV",
            "license": "B00850",
            "primary": false
        },
        {
            "code": "225700000X",
            "taxonomy_group": "",
            "desc": "Massage Therapist",
            "state": "CA",
            "license": "23363",
            "primary": false
        },
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "CA",
            "license": "DC0259240",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Victoria Louise Russell
• Ellen Russin J Russin, LCSW
• Ruth Ann Crystal, MD, a Professional Corporation
• Maura Rhea Zoe Ruzhnikov, MD
• Caroline E Ryan, OTR/L
• Julia Ryan
• Kaitlin Theresa Ryan, AU.D.
• Katherine Jane Ryan, DO
• Kathleen R Ryan, M.D.
• Michael K Ryan

• Chiropractor in Palo Alto, CA
• Providers in Palo Alto, CA by specialty
• Chiropractor in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.