Diana Thelen, PHARM D
NPI 1033404389 · Pharmacist · Simi Valley, CA
Diana Thelen, PHARM D is a Pharmacist provider in Simi Valley, CA (NPI 1033404389).
Provider details
- NPI number
- 1033404389
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Credential
- PHARM D
- Sex
- Female
- Sole proprietor
- Yes
- License
- 53646 (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
15 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Naloxone Hcl | 14 | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-06-15
- Last updated
- 2012-06-22
Frequently asked questions
- What is Diana Thelen's NPI number?
- Diana Thelen's National Provider Identifier (NPI) is 1033404389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Thelen's specialty?
- Diana Thelen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Diana Thelen located?
- Diana Thelen's practice location on file with NPPES is 4440 Alamo St, Simi Valley, CA 93063-1733.
- What is Diana Thelen's phone number?
- The practice phone number listed in the NPPES registry for Diana Thelen is (805) 522-3120.
- Is Diana Thelen's NPI active?
- Yes — Diana Thelen's NPI (1033404389) is active in the NPPES registry as of the last update on 2012-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.