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SAN MARCOS MEDICAL GROUP INC.
NPI 1639129372
Family Medicine in Fontana, CA

Active since May 11, 2006CLIA 05D0925726 · Waiver
7965 SIERRA AVE, FONTANA, CA 92336(909) 356-4459(909) 355-4261 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 1, 2026, Apr 29, 2022 (2 updates tracked since 2022).

About San Marcos Medical Group Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SAN MARCOS MEDICAL GROUP INC. (NPI 1639129372), doing business as Metropolitan Fammily Medical Clinic, is a healthcare organization registered as a family medicine in Fontana, California and active in the NPI registry since May 2006. The organization holds a CLIA Waiver certificate valid through March 4, 2027, maintains a secondary practice location in Rialto, and lists Natt Balbir, Md/president, as its authorized official.

NPPES Registry Identity

NPI1639129372
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameSAN MARCOS MEDICAL GROUP INC.
Location Address7965 SIERRA AVEFontana, CA 92336-3329
Mailing Address7965 Sierra AveFontana, CA 92336-3329 · (909) 356-4459 · Fax (909) 355-4261
Phone(909) 356-4459
Fax(909) 355-4261
Organization SubpartNo
Authorized OfficialNatt BalbirMd/president · (951) 751-5470
Enumeration DateMay 11, 2006
Last NPPES UpdateJune 1, 20262 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
✔ NPI 1639129372 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · GR0086722
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
7965 SIERRA AVE, Fontana, CA 92336
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Other Names 1

Doing Business AsMetropolitan Fammily Medical Clinic

Secondary Practice Location 1

Location 1425 E Foothill BlvdRialto, CA 92376-5153 · Phone (909) 546-1050 · Fax (909) 546-1061

Other Identifiers 10

Medicaid00A431680CA
Medicaid00A514170CA
Medicaid00A784100CA
Medicaid00A450910CA
MedicaidGR0086722CA
Medicaid00A398050CA
Medicaid00A460220CA
Medicaid00A529660CA
Medicaid00A764460CA
Medicaid00AX91490CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0925726

San Marcos Medical Group · Fontana, CA
Active · expires Mar 4, 2027
CLIA Number05D0925726
Laboratory TypeCommunity Clinic
Certificate Effective DateMarch 5, 2025
Certificate Expiration DateMarch 4, 2027
Laboratory DirectorNatt K. Balbir MD
Laboratory Phone(909) 356-4459
Laboratory LocationSan Marcos Medical Group7965 Sierra Avenue, Suite E, Fontana, CA 92336
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHERRY PATRICIA THANGARAJ FNP-C
Nurse Practitioner (Family)
7965 SIERRA AVE
FONTANA, CA 92336
San Bernardino County (909) 356-4459
SYLVIA DOLORES MAGALLANES CNM, RNP, MS
Nurse Practitioner (Obstetrics & Gynecology)
7965 SIERRA AVE, STE E
FONTANA, CA 92336
San Bernardino County (909) 356-4459
GARRY LEE RALEY M.F.T.
Marriage & Family Therapist
7965 SIERRA AVE, SUITE J
FONTANA, CA 92336
San Bernardino County (909) 355-3888
BERNABE MARINDUQUE M.D.
Obstetrics & Gynecology
7965 SIERRA AVE, SUITE E
FONTANA, CA 92336
San Bernardino County (909) 356-4459
DAMPA NIKHIL SHAH MD
Family Medicine
7965 SIERRA AVE, STE E
FONTANA, CA 92336
San Bernardino County (909) 356-4459
MONIR KATANI MD
Family Medicine
7965 SIERRA AVE
FONTANA, CA 92336
San Bernardino County (909) 356-4459
MRS. SHERRI LYNN HULL NURSE PRACTITIONER
Nurse Practitioner (Women's Health)
7965 SIERRA AVE
FONTANA, CA 92336
San Bernardino County (909) 356-4459

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is San Marcos Medical Group Inc.'s NPI number?

The NPI number for San Marcos Medical Group Inc. is 1639129372. It was assigned to this organization in the NPPES registry on May 11, 2006. The provider is doing business as Metropolitan Fammily Medical Clinic.

Where is San Marcos Medical Group Inc. located?

San Marcos Medical Group Inc. is located at 7965 Sierra Ave, Fontana, CA 92336. The listed phone number is (909) 356-4459.

What is San Marcos Medical Group Inc.'s specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Does San Marcos Medical Group Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0925726) is associated with this NPI, valid through March 4, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for San Marcos Medical Group Inc. was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.