SAN MARCOS MEDICAL GROUP, INC.
NPI 1265721856
Obstetrics & Gynecology in Rialto, CA
NPI Status: Active since April 04, 2011
Contact Information
425 E FOOTHILL BLVD
RIALTO, CA
ZIP 92376
Phone: (909) 546-1050
Fax: (909) 546-1061
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- Obstetrics & Gynecology
- CLIA Number: 05D2018241
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 12-28-2026
About SAN MARCOS MEDICAL GROUP, INC.
This page provides the complete NPI Profile along with additional information for San Marcos Medical Group, Inc., a women's health care provider established in Rialto, California operating as a Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1265721856 assigned on April 2011. The practitioner's primary taxonomy code is 207V00000X with license number A60285 (CA). The provider is registered as an organization and their NPI record was last updated June 2026. San Marcos Medical Group, Inc. operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The provider's
- NPI
- 1265721856
- Provider Legal Name
- SAN MARCOS MEDICAL GROUP, INC.
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 425 E FOOTHILL BLVD RIALTO, CA 92376
- Location Phone
- (909) 546-1050
- Location Fax
- (909) 546-1061
- Mailing Address
- 425 E FOOTHILL BLVD RIALTO, CA 92376
- Mailing Phone
- (909) 546-1050
- Mailing Fax
- (909) 546-1061
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 04-04-2011
- Last Update Date
- 06-01-2026
- Code Navigator
Women's health care providers like San Marcos Medical Group, Inc. treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Obstetrics & Gynecology
- Taxonomy Code
- 207V00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A60285
- License State
- CA
- Taxonomy Description
- An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | A39805 (CA) |
| 2 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | A54098 (CA) |
| 3 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | A46022 (CA) |
| 4 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | A78410 (CA) |
| 5 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | 20A10219 (CA) |
| 6 | 207V00000X | Allopathic & Osteopathic Physicians | Obstetrics & Gynecology | A109432 (CA) |
| 7 | 207V00000X | Allopathic & Osteopathic Physicians | Obstetrics & Gynecology | A105379 (CA) |
| 8 | 207V00000X | Allopathic & Osteopathic Physicians | Obstetrics & Gynecology | 20A9149 (CA) |
| 9 | 207V00000X | Allopathic & Osteopathic Physicians | Obstetrics & Gynecology | A92717 (CA) |
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 05D2018241
- Facility Type
- Physician Office
- Certificate Effective Date
- December 29, 2024
- Certificate Expiration Date
- December 28, 2026
- Laboratory Director
- BALBIR NATT
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to San Marcos Medical Group, Inc. to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.
Reviews for SAN MARCOS MEDICAL GROUP, INC.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1265721856, we treat the final digit (6) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 54 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 7 providers are registered at the same or a nearby location.
RIALTO, CA 92376
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1265721856, enumerated as an "organization" on April 04, 2011.
The provider is located at 425 E FOOTHILL BLVD RIALTO, CA 92376 and the phone number is (909) 546-1050.
Obstetrics & Gynecology with taxonomy code 207V00000X.
