Manuel Montemayor, MD
General Practice Physician · San Marcos, CA
Manuel Montemayor, MD is a general practice physician with a practice address in San Marcos, California, and NPI 1609918978, issued on Feb 13, 2007. Check the license (California A51037, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Manuel Montemayor
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- A51037 CA
Self-reported in NPPES; status is on the state search - Practice location
- 727 W San Marcos Blvd, San Marcos, CA 92078
- Phone
- (760) 736-8810
- Enumerated
- Feb 13, 2007
- Record last updated
- Jan 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (760) 736-3157
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 727 W San Marcos Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Loribette Antonio, F.N.P.Family Nurse Practitioner1467882910
- Melissa Barsotti, LCSWClinical Social Worker1043419195
- Vrijlal Rakholia, R.PH.Pharmacist1770576415
Verify Manuel Montemayor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51037Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average general practice physician in 2024
19 Medicare Part D claims, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Manuel Montemayor among 1,956 general practice physician records in California
Manuel Montemayor, MD is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 50% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2015 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in San Marcos → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Ronald Shimmin, M.D.San Marcos, CA 920781225153315
- Kamyar Hedayat, MDSolana Beach, CA 920751255306395
- Julie Mai, D.O.Solana Beach, CA 920751538499975
- Benedicto Masilungan, MDSolana Beach, CA 920751578617205
- Linda Falconio Md, MDVista, CA 920831710030747
- Ira Meiberger, MDVista, CA 920831346250461
- Carlos Oliva, M.D.Vista, CA 920831891882239
- Delia Pallaziol, M.D.Vista, CA 920831265557086
Common questions
What is Manuel Montemayor, MD's NPI number?
Manuel Montemayor, MD's National Provider Identifier (NPI) is 1609918978, issued on Feb 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Manuel Montemayor, MD located?
The NPPES record lists a practice address at 727 W San Marcos Blvd, San Marcos, CA, 92078. Phone: (760) 736-8810. Providers update this record themselves, so call before visiting.
How can I verify Manuel Montemayor, MD's license?
NPPES lists California license number A51037, 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.
How much does Manuel Montemayor, MD prescribe under Medicare Part D?
In 2024, Manuel Montemayor, MD had 19 Medicare Part D claims; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
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.