William C Steffan, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

G42830 Issued in CA

Practice address

27231 La Paz Rd
#A
Laguna Niguel, CA 92677

Phone

(949) 643-9111

Fax

(949) 643-8916

NPI assigned

Feb 13, 2006

Last updated

Jun 25, 2018By the provider in NPPES

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Oso Niguel Medical Group

  • Internal Medicine Physician
  • Laguna Niguel, CA
  • NPI 1679681324
  NPD (past)

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

{
    "created_epoch": "1139788800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1529884800000",
    "number": "1790758431",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "26522 LA ALAMEDA",
            "address_2": "SUITE 120",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926916330",
            "telephone_number": "949-282-1671",
            "fax_number": "949-367-0518"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "27231 LA PAZ RD",
            "address_2": "#A",
            "city": "LAGUNA NIGUEL",
            "state": "CA",
            "postal_code": "92677",
            "telephone_number": "949-643-9111",
            "fax_number": "949-643-8916"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEFFAN",
        "first_name": "WILLIAM",
        "middle_name": "C",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-13",
        "last_updated": "2018-06-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G42830",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura Immel Sprague, DDS
• Lucinda Louise Springer, PT
• Mae Lee Springer, DDS
• Cheryl Stahl, D.D.S.
• Jennifer Ann Stedman, M.A., LMFT
• Stell Psychotherapy Inc
• Step Ahead Counseling Services, LLC
• Valerie Beth Stephens, L.C.S.W.
• Sterling Psychological Services, Professional Corporation
• Katie Nicole Stern, DDS

• Family Medicine Physician in Laguna Niguel, CA
• Providers in Laguna Niguel, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 25, 2018; 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.