Gregory S Larsen, D.O.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

20A10521 Issued in CA

Practice address

400 N Pepper Ave
Colton, CA 92324-1801

Phone

(909) 580-1000

NPI assigned

Aug 26, 2008

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

Specialty

Emergency Medicine

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Pacific Redwood Medical Group Inc 58 clinicians

San Francisco Emergency Medical Associates 74 clinicians

Cep America - California 1,278 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventist Health Mendocino Coast Hospital, Fort Bragg, CA, CCN 051325
• Marinhealth Medical Center Hospital, Greenbrae, CA, CCN 050360
• Sutter Santa Rosa Regional Hospital Hospital, Santa Rosa, CA, CCN 050291
• Adventist Health Howard Memorial Hospital, Willits, CA, CCN 051310

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: glarsen403733@direct-ucsfmedicalcenter.org

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.

• Cep America - California

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1023063542

  CA, Emergency Medicine

  Medicare reassignment Care Compare group NPD
• San Francisco Emergency Medical Associates

  • Emergency Medicine Physician
  • San Francisco, CA
  • NPI 1134110661

  CA, Emergency Medicine

  Medicare reassignment Care Compare group NPD
• Pacific Redwood Medical Group Inc

  • Emergency Medicine Physician
  • Ukiah, CA
  • NPI 1033103676

  CA

  Medicare reassignment Care Compare group
• Chase Dennis Emergency Medical Group Inc

  • Emergency Medicine Physician
  • Santa Rosa, CA
  • NPI 1033152350

  CA, Emergency Medicine

  Medicare reassignment NPD
• Napa Valley Emergency Medical Group

  • Emergency Medicine Physician
  • Napa, CA
  • NPI 1467463539

  CA, Emergency Medicine

  Medicare reassignment NPD
• Cep America - California

  • Emergency Medicine Physician
  • Santa Ana, CA
  • NPI 1548667843
  Care Compare group
• Cep America - California

  • Emergency Medicine Physician
  • Novato, CA
  • NPI 1124577259

  Emergency Medicine

  NPD

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

• Adventist Health Mendocino Coast

  • Critical Access Hospital
  • Fort Bragg, CA
  • NPI 1538113725

  Hospital

  Care Compare affiliation
• Marin General Hospital

  • General Acute Care Hospital
  • Greenbrae, CA
  • NPI 1396725677

  Hospital

  Care Compare affiliation
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1740413798

  Hospital

  Care Compare affiliation
• Willits Hospital Inc.

  • Critical Access Hospital
  • Willits, CA
  • NPI 1356339543

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1219708800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1256860800000",
    "number": "1104073709",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "312 NOTRE DAME RD",
            "city": "CLAREMONT",
            "state": "CA",
            "postal_code": "917115136",
            "telephone_number": "909-399-3609"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 N PEPPER AVE",
            "city": "COLTON",
            "state": "CA",
            "postal_code": "923241801",
            "telephone_number": "909-580-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LARSEN",
        "first_name": "GREGORY",
        "middle_name": "S",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-08-26",
        "last_updated": "2009-10-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "20A10521",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lacee Lanai Lanier
• Mia Lankford
• Shantae Lankford, RN
• Consuelo Yannet Lara Zaragoza
• Fernanda Kathy Lara, NP
• Douglas Wayne Larson, PH.D.
• Kareem Latif
• Maurice Lauderdale
• Mary Kay Laurent, M.A.
• Patsy Lavender

• All providers in Colton, CA
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 30, 2009; 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.