Organization Active NPI

Jeffrey Rieker MD Inc

  • Anesthesiology Physician
  • Riverside, CA
National Provider Identifier
1861797953
Registry record updated Aug 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
G44862 Issued in CA
Legal business name
JEFFREY RIEKER MD INC
Practice address
8945 Magnolia Ave Ste 200
Riverside, CA 92503-4436
Phone
(951) 688-7270
NPI assigned
Jan 20, 2011
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 21, 2026

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

Authorized official

Name
Jeffrey M Rieker, M.D.NPI 1043266802
Title
President
Phone
(909) 985-2112

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207L00000X G44862 CA Primary

Addresses

Primary practice location

8945 Magnolia Ave Ste 200
Riverside, CA 92503-4436

Mailing address

PO Box 148
Claremont, CA 91711-0148
Phone (909) 985-2112

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20110415000661 CA Part B Supplier - Clinic/Group Practice 0244414233 Receives reassigned benefits from 1 practitioner
Practice locations: Los Angeles, CA; Newport Beach, CA; Rancho Cucamonga, CA; Riverside, CA; Upland, CA; Victorville, CA

National Provider Directory

National Provider Directory

Locations

2345 W Foothill Blvd
Ste 6
Upland, CA 91786

1330 San Bernardino Rd
Ste F
Upland, CA 91786
Phone (909) 981-8755

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1295481600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787270400000",
    "number": "1861797953",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 148",
            "city": "CLAREMONT",
            "state": "CA",
            "postal_code": "917110148",
            "telephone_number": "909-985-2112",
            "fax_number": "909-985-3411"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8945 MAGNOLIA AVE STE 200",
            "city": "RIVERSIDE",
            "state": "CA",
            "postal_code": "925034436",
            "telephone_number": "951-688-7270"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JEFFREY RIEKER MD INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2011-01-20",
        "last_updated": "2026-08-21",
        "certification_date": "2026-08-21",
        "status": "A",
        "authorized_official_last_name": "RIEKER",
        "authorized_official_first_name": "JEFFREY",
        "authorized_official_middle_name": "M",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "909-985-2112",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "G44862",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Riverside, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.