Sowmya Oza, M.D.
NPI 1639394836 · Internal Medicine Physician · San Luis Obispo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sowmya Oza, M.D. is a Internal Medicine Physician provider in San Luis Obispo, CA (NPI 1639394836).
Provider details
- NPI number
- 1639394836
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036-123642 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
329 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 80 | $135 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 74 | $133 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 66 | $186 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 49 | $94 |
| Administration of Influenza Virus VaccineG0008 | 29 | $33 |
| Administration of Pneumococcal VaccineG0009 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 184 | 93 |
| Amlodipine Besylate | 106 | 48 |
| Losartan Potassium | 58 | 24 |
| Levothyroxine Sodium | 57 | 30 |
| Lisinopril | 44 | 20 |
| Metformin Hcl | 40 | 18 |
| Trazodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2024-09-18
- Certified
- 2024-09-18
Frequently asked questions
- What is Sowmya Oza's NPI number?
- Sowmya Oza's National Provider Identifier (NPI) is 1639394836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sowmya Oza's specialty?
- Sowmya Oza is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sowmya Oza located?
- Sowmya Oza's practice location on file with NPPES is 4460 Broad St Ste 110, San Luis Obispo, CA 93401.
- What is Sowmya Oza's phone number?
- The practice phone number listed in the NPPES registry for Sowmya Oza is (805) 597-6715.
- Does Sowmya Oza accept Medicare?
- Sowmya Oza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sowmya Oza's NPI active?
- Yes — Sowmya Oza's NPI (1639394836) is active in the NPPES registry as of the last update on 2024-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.