Jonathan A. Sosnov, M.D.
Internal Medicine Physician · McClellan, CA
Jonathan A. Sosnov, M.D. is an internal medicine physician with a practice address in McClellan, California, and NPI 1144288101, issued on May 1, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan A. Sosnov
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- ME9663 FL
Self-reported in NPPES; status is on the state search - Practice location
- 5342 Dudley Blvd, McClellan, CA 95652
- Phone
- (707) 423-3000
- Enumerated
- May 1, 2006
- Record last updated
- Oct 23, 2023
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5342 Dudley Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark-Mushtaq Ahmed, NPNurse Practitioner1780652818
- Cynthia Alli, M.D.Internal Medicine Physician1598741639
- Caitlin Baumgardner, RNCase Management Registered Nurse1619262995
- Margaret Carrico, M.D.Family Medicine Physician1528043197
- Valerie Christian, FNPFamily Nurse Practitioner1033528963
- David Cole, LMSWClinical Social Worker1356047021
Verify Jonathan A. Sosnov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
67 Medicare Part D claims for 12 beneficiaries, against an average of 3,176 among the 108,855 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.
Jonathan A. Sosnov among 17,696 internal medicine physician records in California
Jonathan A. Sosnov, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in McClellan
They are 10 of the 160 NPPES records with a practice address in McClellan, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in McClellan → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jane Addagatla, MDMcClellan Park, CA 956521073596581
- Cynthia Alli, M.D.McClellan, CA 956521598741639
- Erick Aponte Guzman, M.D.McClellan, CA 956521386058139
- Sylvia Beamesderfer, M.D.McClellan, CA 956521891770285
- Moon Jeu, M.D.McClellan, CA 956521710936638
- Debra Karling-Isaacs, MDMcClellan, CA 956521699752873
- Zoraida Soriano, M.D.McClellan, CA 956521699745612
- Tito Tanguilig, M.D.McClellan, CA 956521679535579
Common questions
What is Jonathan A. Sosnov, M.D.'s NPI number?
Jonathan A. Sosnov, M.D.'s National Provider Identifier (NPI) is 1144288101, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan A. Sosnov, M.D. located?
The NPPES record lists a practice address at 5342 Dudley Blvd, McClellan, CA, 95652. Phone: (707) 423-3000. Providers update this record themselves, so call before visiting.
How can I verify Jonathan A. Sosnov, M.D.'s license?
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 Jonathan A. Sosnov, M.D. prescribe under Medicare Part D?
In 2024, Jonathan A. Sosnov, M.D. had 67 Medicare Part D claims for 12 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.