Jonathan Geechun Ma, M.D.
Anesthesiology Physician · Modesto, CA
Jonathan Geechun Ma, M.D. is an anesthesiology physician with a practice address in Modesto, California, and NPI 1881937142, issued on Apr 4, 2013. Check the license (California A147253, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan Geechun Ma
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A147253 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 Coffee RD, Modesto, CA 95355
- Phone
- (209) 524-1211
- Enumerated
- Apr 4, 2013
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170821001422); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 600 Coffee RD
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Verify Jonathan Geechun Ma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A147253Check 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 one group practice
- Sutter Valley Medical FoundationModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Geechun Ma among 7,571 anesthesiology physician records in California
Jonathan Geechun Ma, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 73% of them.
- NPI issued2013 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2013 · median 2006 among the 4,868 with a school on file
- Record last updated2018 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
75 anesthesiology physician records list a practice address in Modesto
They are 75 of the 9,262 NPPES records with a practice address in Modesto, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Modesto → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Brigida Andaya, MDModesto, CA 953551407812209
- David Betz, MDModesto, CA 953551023074820
- Chai Chang, MDModesto, CA 953551568428738
- Paul Coleman, DOModesto, CA 953551336107481
- Jacqueline Decayette, M.D.Modesto, CA 953551942279914
- Barbara Fong, MDModesto, CA 953551730157744
- Kenneth Imanaka, MDModesto, CA 953551013974567
- Eutiquio Imperial, MDModesto, CA 953551659337467
Common questions
What is Jonathan Geechun Ma, M.D.'s NPI number?
Jonathan Geechun Ma, M.D.'s National Provider Identifier (NPI) is 1881937142, issued on Apr 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Geechun Ma, M.D. located?
The NPPES record lists a practice address at 600 Coffee RD, Modesto, CA, 95355. Phone: (209) 524-1211. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Geechun Ma, M.D.'s license?
NPPES lists California license number A147253, 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.