Oliver Tamis
NPI 1235768276 · Student in an Organized Health Care Education/Training Program · Vallejo, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oliver Tamis is a Student in an Organized Health Care Education/Training Program provider in Vallejo, CA (NPI 1235768276).
Provider details
- NPI number
- 1235768276
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 38 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 31 | — |
| Allopurinol | 29 | — |
| Pantoprazole Sodium | 29 | — |
| Tamsulosin Hcl | 29 | — |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 25 | — |
| Levetiracetam | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-02
- Last updated
- 2023-11-27
- Certified
- 2020-04-02
Frequently asked questions
- What is Oliver Tamis's NPI number?
- Oliver Tamis's National Provider Identifier (NPI) is 1235768276, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oliver Tamis's specialty?
- Oliver Tamis is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Oliver Tamis located?
- Oliver Tamis's practice location on file with NPPES is 1310 Club Dr, Vallejo, CA 94592-1187.
- What is Oliver Tamis's phone number?
- The practice phone number listed in the NPPES registry for Oliver Tamis is (707) 638-5278.
- Does Oliver Tamis accept Medicare?
- Oliver Tamis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oliver Tamis's NPI active?
- Yes — Oliver Tamis's NPI (1235768276) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.