Gregory Allan Niderost

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

1602 Issued in CA

Practice address

1 Madrone St
Willits, CA 95490-4225

Phone

(707) 456-3171

NPI assigned

Jan 5, 2006

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

Enrollment records 1

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Willits Hospital IncGroup PAC ID 7416940697, 67 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventist Health Howard Memorial Hospital, Willits, CA, CCN 051310

Merit-based Incentive Payment System (MIPS)

Final score

89.41 of 100Reported as group

Quality

86.32

Promoting interoperability

95

Improvement activities

40

Cost

66.55

Medicare enrollment (NPD)

Enrolled

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.

• Willits Hospital Inc.

  dba Adventist Health Howard Memorial

  • Critical Access Hospital
  • Willits, CA
  • NPI 1356339543
  Medicare reassignment Care Compare group NPD
• Ukiah Adventist Hospital

  dba Adventist Health Howard Pharmacy

  • Community/Retail Pharmacy
  • Willits, CA
  • NPI 1629432968
  NPD

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

• Willits Hospital Inc.

  dba Adventist Health Howard Memorial

  • Critical Access Hospital
  • Willits, CA
  • NPI 1356339543
  Care Compare affiliation

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

{
    "created_epoch": "1136419200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1255319679",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 MADRONE ST",
            "city": "WILLITS",
            "state": "CA",
            "postal_code": "954904225",
            "telephone_number": "707-456-3171"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MADRONE ST",
            "city": "WILLITS",
            "state": "CA",
            "postal_code": "954904225",
            "telephone_number": "707-456-3171"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIDEROST",
        "first_name": "GREGORY",
        "middle_name": "ALLAN",
        "name_prefix": "Mr.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-05",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "CA",
            "license": "1602",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sylvia Mui
• Paula Jean Murphy, D.C.
• Earl Tobias Myers, O.D.
• Rahel Negash, PHARMD
• Kyle Christopher Neuer, RN
• Northern California Medical Assoc Inc
• Elias Wassie Nuru, RPH
• Mary Simisola Ogunmeru, PHARMD
• Natalia Ordonez
• Doreen May Orme, P.T.

• Certified Registered Nurse Anesthetist in Willits, CA
• Providers in Willits, CA by specialty
• Certified Registered Nurse Anesthetist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.