Sowmya Oza, M.D.
Internal Medicine Physician · San Luis Obispo, CA
Sowmya Oza, M.D. is an internal medicine physician with a practice address in San Luis Obispo, California, and NPI 1639394836, issued on Apr 16, 2007. Check the license (California 139970, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sowmya Oza
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 139970 CA
036-123642 IL
57.011517 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4460 Broad St Ste 110, San Luis Obispo, CA 93401
- Phone
- (805) 597-6715
- Enumerated
- Apr 16, 2007
- Record last updated
- Sep 18, 2024
- Fax
- (805) 541-4973
- Medicare enrollment
- Enrolled (PECOS I20160707002005); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4460 Broad St Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gladys Field, MSN, APRN, ACNP-BCNurse Practitioner1336228337
- Jourdan Muro, PA-CPhysician Assistant1750151601
Verify Sowmya Oza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 139970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,346 Medicare Part D claims for 334 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 14 claims were for opioids.
Most prescribed
- Atorvastatin Calcium184 claims
- Amlodipine Besylate106 claims
- Losartan Potassium58 claims
- Levothyroxine Sodium57 claims
- Lisinopril44 claims
- Metformin Hcl40 claims
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.
Bills Medicare through one group practice
- Pacific Central Coast Health CentersSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sowmya Oza among 17,696 internal medicine physician records in California
Sowmya Oza, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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).
41 internal medicine physician records list a practice address in San Luis Obispo
They are 41 of the 3,403 NPPES records with a practice address in San Luis Obispo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Luis Obispo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Bloom, MDSan Luis Obispo, CA 934011154346377
- Deborah Cherry, M.D.San Luis Obispo, CA 934011063495356
- Grace Crittenden, MDSan Luis Obispo, CA 934011053343764
- Mark Donaldson, M.D.San Luis Obispo, CA 934011710923933
- Maureen Haas, M.D.San Luis Obispo, CA 934011760437230
- Stephen Hansen, MDSan Luis Obispo, CA 934011649200742
- Jana Hanson, MDSan Luis Obispo, CA 934011508849894
- John Massaro, DOSan Luis Obispo, CA 934011588665293
Common questions
What is Sowmya Oza, M.D.'s NPI number?
Sowmya Oza, M.D.'s National Provider Identifier (NPI) is 1639394836, issued on Apr 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sowmya Oza, M.D. located?
The NPPES record lists a practice address at 4460 Broad St Ste 110, San Luis Obispo, CA, 93401. Phone: (805) 597-6715. Providers update this record themselves, so call before visiting.
How can I verify Sowmya Oza, M.D.'s license?
NPPES lists California license number 139970, 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 Sowmya Oza, M.D. prescribe under Medicare Part D?
In 2024, Sowmya Oza, M.D. had 1,346 Medicare Part D claims for 334 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.