NPIMap

Organization Active NPI

San Marcos Medical Group Inc.

  • Family Medicine Physician
  • Fontana, CA
National Provider Identifier
1639129372
Registry record updated Jun 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
GR0086722 Issued in CA
Legal business name
SAN MARCOS MEDICAL GROUP INC.
Practice address
7965 Sierra Ave
Fontana, CA 92336-3329
Phone
(909) 356-4459
Fax
(909) 355-4261
NPI assigned
May 11, 2006
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 1, 2026

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

Authorized official

Name
Natt Balbir, MD
Title
MD/President
Phone
(951) 751-5470

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207Q00000X GR0086722 CA Primary

Addresses

Primary practice location

7965 Sierra Ave
Fontana, CA 92336-3329

Mailing address

7965 Sierra Ave
Fontana, CA 92336-3329
Phone (909) 356-4459

Other practice location 1

425 E Foothill Blvd
Rialto, CA 92376-5153
Phone (909) 546-1050

Other identifiers 10

IdentifierTypeStateIssuer
00A431680MedicaidCA
00A514170MedicaidCA
00A784100MedicaidCA
00A450910MedicaidCA
GR0086722MedicaidCA
00A398050MedicaidCA
00A460220MedicaidCA
00A529660MedicaidCA
00A764460MedicaidCA
00AX91490MedicaidCA

Other names 1

  • METROPOLITAN FAMMILY MEDICAL CLINIC Doing business as

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
05D0925726San Marcos Medical Group7965 Sierra Avenue, Suite E, Fontana, CA 92336Certificate of waiverMar 4, 2027

National Provider Directory

National Provider Directory
Tax ID family
Metropolitan Family Medical Clinic8 organizations share this tax ID, including this one

Other organizations with this tax ID 7

Organizations that report the same tax identification number in the National Provider Directory.

Locations

4990 Arlington Ave
Ste Cd
Riverside, CA 92504

Practitioners & affiliated clinicians

Practitioners 17

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

View all 17

NPI Registry JSON

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

{
    "created_epoch": "1147305600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1780272000000",
    "number": "1639129372",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7965 SIERRA AVE",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923363329",
            "telephone_number": "909-356-4459",
            "fax_number": "909-355-4261"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7965 SIERRA AVE",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923363329",
            "telephone_number": "909-356-4459",
            "fax_number": "909-355-4261"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "425 E Foothill Blvd",
            "address_purpose": "LOCATION",
            "city": "Rialto",
            "state": "CA",
            "postal_code": "923765153",
            "country_code": "US",
            "telephone_number": "909-546-1050",
            "fax_number": "909-546-1061",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "SAN MARCOS MEDICAL GROUP INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-05-11",
        "last_updated": "2026-06-01",
        "certification_date": "2026-06-01",
        "status": "A",
        "authorized_official_last_name": "BALBIR",
        "authorized_official_first_name": "NATT",
        "authorized_official_title_or_position": "MD/PRESIDENT",
        "authorized_official_telephone_number": "951-751-5470",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "GR0086722",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A431680",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A514170",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A784100",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A450910",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "GR0086722",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A398050",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A460220",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A529660",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A764460",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00AX91490",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "METROPOLITAN FAMMILY MEDICAL CLINIC",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Fontana, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • 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.