Eric Oak, PHARM.D.
NPI 1033455811 · Pharmacist · Lancaster, CA
Eric Oak, PHARM.D. is a Pharmacist provider in Lancaster, CA (NPI 1033455811).
Provider details
- NPI number
- 1033455811
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 68259 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 304 | 196 |
| Metformin Hcl | 230 | 122 |
| Empagliflozinbrand: Jardiance | 212 | 74 |
| Semaglutidebrand: Ozempic | 174 | 43 |
| Glipizide | 153 | 70 |
| Dulaglutidebrand: Trulicity | 89 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-12-22
- Last updated
- 2014-02-07
Frequently asked questions
- What is Eric Oak's NPI number?
- Eric Oak's National Provider Identifier (NPI) is 1033455811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Oak's specialty?
- Eric Oak is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Eric Oak located?
- Eric Oak's practice location on file with NPPES is 43839 N. 15th Street West, Lancaster, CA 93534.
- What is Eric Oak's phone number?
- The practice phone number listed in the NPPES registry for Eric Oak is (661) 726-3806.
- Is Eric Oak's NPI active?
- Yes — Eric Oak's NPI (1033455811) is active in the NPPES registry as of the last update on 2014-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.