Mercy Tang
NPI 1629634530 · Pharmacist · Santa Rosa, CA
Provider details
- NPI number
- 1629634530
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 78968 (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
7 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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hclbrand: Metformin Hcl Er | 102 | 68 |
| Glipizide | 90 | 52 |
| Pen Needle, Diabeticbrand: Ultra-Fine Nano Pen Needle | 67 | 34 |
| Insulin Nph Human Isophanebrand: Humulin N | 66 | 46 |
| Semaglutidebrand: Ozempic | 65 | 16 |
| Insulin Glargine-Yfgn | 57 | 34 |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-05-15
- Last updated
- 2023-10-26
- Certified
- 2023-10-26
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.