Individual provider Active NPI

Paul F. Stemmer, MD

  • Surgery Physician
  • Big Bear Lake, CA
National Provider Identifier
1891798112
Registry record updated Mar 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
License
G63347 Issued in CA
Practice address
41820 Garstin Drive
PO Box 1649
Big Bear Lake, CA 92315
Phone
(909) 878-8246
Fax
(909) 878-8294
NPI assigned
May 31, 2005
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 11, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X G63347 CA Primary

Addresses

Primary practice location

41820 Garstin Drive
PO Box 1649
Big Bear Lake, CA 92315

Mailing address

1081 N China Lake Blvd
Ridgecrest, CA 93555-3130
Phone (760) 446-3551

Other identifiers 1

IdentifierTypeStateIssuer
G63347OtherCACA LICENSE

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20070501000702 CA Practitioner - General Surgery 0547254831 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
University of California, Irvine, California College of Medicine, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Bear Valley Community Health Care DistrictGroup PAC ID 0345138582, 28 clinicians

Practice addresses (Care Compare)

41870 Garstin Dr
Big Bear Lake, CA 92315-2088
Phone 90986665018315

Hospital & facility affiliations

  • Bear Valley Community Hospital Hospital, Big Bear Lake, CA, CCN 051335
  • Ridgecrest Regional Hospital Hospital, Ridgecrest, CA, CCN 051333

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Hernia repair - groin (open)1-10
Mastectomy1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
G63347CAMDSurgery Physician
63347CAMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Bear Valley Community Health Care District CurrentSince Feb 11, 2024 Accepting new patients
Ridgecrest Regional Hospital Current Accepting new patients

Locations

1011 N China Lake Blvd
Ste B
Ridgecrest, CA 93555
Phone (661) 726-5005

1081 N China Lake Blvd
Ridgecrest, CA 93555
Phone (760) 446-0616

1011 N China Lake Blvd
Ridgecrest, CA 93555
Phone (760) 499-3360

1111 N China Lake Blvd
Ridgecrest, CA 93555
Phone (760) 446-4571

Interoperability endpoints

  • Direct secure messaging: paulstemmer@rrh.medalliesdirect.net

Organizations & group practices 2

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1117497600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773187200000",
    "number": "1891798112",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1081 N CHINA LAKE BLVD",
            "city": "RIDGECREST",
            "state": "CA",
            "postal_code": "935553130",
            "telephone_number": "760-446-3551",
            "fax_number": "760-499-3393"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "41820 GARSTIN DRIVE",
            "address_2": "PO BOX 1649",
            "city": "BIG BEAR LAKE",
            "state": "CA",
            "postal_code": "92315",
            "telephone_number": "909-878-8246",
            "fax_number": "909-878-8294"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEMMER",
        "first_name": "PAUL",
        "middle_name": "F.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-05-31",
        "last_updated": "2026-03-11",
        "certification_date": "2026-03-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "G63347",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CA LICENSE",
            "identifier": "G63347",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Big Bear Lake, CA

Sources for this page

Verify at the official NPI Registry.