Mary Li Ma, MD
Obstetrics & Gynecology Physician · La Mesa, CA
Mary Li Ma, MD is an obstetrics & gynecology physician with a practice address in La Mesa, California, and NPI 1356606263, issued on Jul 6, 2012. Check the license (California C187124, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Li Ma
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- C187124 CA
284755 NY
Self-reported in NPPES; status is on the state search - Practice location
- 5555 Grossmont Center Dr, La Mesa, CA 91942
- Phone
- (619) 740-6000
- Enumerated
- Jul 6, 2012
- Record last updated
- Jun 20, 2024
- Medicare enrollment
- Enrolled (PECOS I20230817002201); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 5555 Grossmont Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kikelomo Aluko, MSN, APRN, PMHNP BCPsychiatric/Mental Health Nurse Practitioner1083584346
- Vian AmerPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1972186609
Verify Mary Li Ma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C187124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Obhg California PCLa Mesa, CA
- Scripps Health Inpatient Providers Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Li Ma among 5,088 obstetrics & gynecology physician records in California
Mary Li Ma, 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 2012, is newer than 75% of them.
- NPI issued2012 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2012 · median 2004 among the 2,700 with a school on file
- Record last updated2024 · 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 La Mesa → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Elise Brown, MDLa Mesa, CA 919421801893201
- Tracie Davis, M.D., FACOGLa Mesa, CA 919421275680738
- Kevin Fulford, MDLa Mesa, CA 919421063594612
- Frank Goicoechea, M.D.La Mesa, CA 919421447366836
- Leslie Gray, M.D.La Mesa, CA 919421518977503
- Galen Hansen, MDLa Mesa, CA 919421841202736
- Andrea Journagin, M.D.La Mesa, CA 919421457528879
- Christopher Lafferty, M.D.La Mesa, CA 919421821008350
Common questions
What is Mary Li Ma, MD's NPI number?
Mary Li Ma, MD's National Provider Identifier (NPI) is 1356606263, issued on Jul 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mary Li Ma, MD located?
The NPPES record lists a practice address at 5555 Grossmont Center Dr, La Mesa, CA, 91942. Phone: (619) 740-6000. Providers update this record themselves, so call before visiting.
How can I verify Mary Li Ma, MD's license?
NPPES lists California license number C187124, 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.