Mitchell Besser, MD
Obstetrics & Gynecology Physician · San Marcos, CA
Mitchell Besser, MD is an obstetrics & gynecology physician with a practice address in San Marcos, California, and NPI 1992814719, issued on Aug 29, 2006. Check the license (California G50257, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mitchell Besser
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G50257 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Valpreda RD, San Marcos, CA 92069
- Phone
- (760) 736-6780
- Enumerated
- Aug 29, 2006
- Record last updated
- Feb 27, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (760) 736-8740
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 150 Valpreda RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maria BanuelosCase Manager/Care Coordinator1720280589
Verify Mitchell Besser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G50257Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $15.42
1 payment: food and beverage; the largest payer was ViiV Healthcare Company. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mitchell Besser among 5,088 obstetrics & gynecology physician records in California
Mitchell Besser, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2008 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Marcos → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Michelle Cabrera, M.D.San Marcos, CA 920691174774723
- Erin Conroy, M.D.San Marcos, CA 920691669731329
- Kelly Martinez, MDSan Marcos, CA 920691063616639
- Marlene Pountney Levesque, MDSan Marcos, CA 920691174703680
- Suzanne Schweikert, MDSan Marcos, CA 920691477560142
- Leslie Buncher, MDRancho Santa Fe, CA 920671104187137
- Ashley Chiarappa, MDSantee, CA 920711760983092
- Ahmad Mehran, M.D.Rancho Santa Fe, CA 920671316213440
Common questions
What is Mitchell Besser, MD's NPI number?
Mitchell Besser, MD's National Provider Identifier (NPI) is 1992814719, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Besser, MD located?
The NPPES record lists a practice address at 150 Valpreda RD, San Marcos, CA, 92069. Phone: (760) 736-6780. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Besser, MD's license?
NPPES lists California license number G50257, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.