Michelle Castillones, PHARMD
NPI 1922457191 · Ambulatory Care Pharmacist · San Rafael, CA
Michelle Castillones, PHARMD is a Ambulatory Care Pharmacist provider in San Rafael, CA (NPI 1922457191).
Provider details
- NPI number
- 1922457191
- Entity type
- Individual
- Primary specialty
- Ambulatory Care PharmacistPharmacy Service Providers
- Credential
- PHARMD
- Sex
- Female
- Sole proprietor
- No
- License
- 73653 (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
10 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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 486 | 222 |
| Metformin Hclbrand: Metformin Hcl Er | 350 | 161 |
| Semaglutidebrand: Ozempic | 296 | 51 |
| Metformin Hcl | 158 | 74 |
| Lisinopril | 140 | 66 |
| Glipizide | 112 | 47 |
| Glimepiride |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-08
- Last updated
- 2021-12-17
- Certified
- 2021-12-17
Frequently asked questions
- What is Michelle Castillones's NPI number?
- Michelle Castillones's National Provider Identifier (NPI) is 1922457191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Castillones's specialty?
- Michelle Castillones is listed in the NPPES registry with a primary specialty of Ambulatory Care Pharmacist (Pharmacy Service Providers).
- Where is Michelle Castillones located?
- Michelle Castillones's practice location on file with NPPES is 1650 Los Gamos Dr Ste 270, San Rafael, CA 94903-1852.
- What is Michelle Castillones's phone number?
- The practice phone number listed in the NPPES registry for Michelle Castillones is (415) 482-6819.
- Is Michelle Castillones's NPI active?
- Yes — Michelle Castillones's NPI (1922457191) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.