Mark Watanabe, PHARMD, PHD
NPI 1104020841 · Psychiatric Pharmacist · San Francisco, CA
Mark Watanabe, PHARMD, PHD is a Psychiatric Pharmacist provider in San Francisco, CA (NPI 1104020841).
Provider details
- NPI number
- 1104020841
- Entity type
- Individual
- Primary specialty
- Psychiatric PharmacistPharmacy Service Providers
- Credential
- PHARMD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 7242 (OR)
Specialties & taxonomies
Pharmacy Service Providers
Pharmacy Service Providers
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 38 |
| Mirtazapine | 28 |
| Aripiprazole | 23 |
| Lurasidone Hcl | 18 |
| Duloxetine Hcl | 16 |
| Escitalopram Oxalate | 16 |
| Quetiapine Fumarate | 14 |
| Risperidone | 14 |
| Sertraline Hcl | 13 |
Practice location
Mailing address
Additional practice locations (2)
- 3905 Mission StSan Francisco, CA 94112-1014Phone: (415) 337-2400Fax: (415) 337-2415
- 1563 Mission St Ste aSan Francisco, CA 94103-2543Phone: (628) 217-5200Fax: (415) 553-3900
Registry dates
- Enumerated
- 2007-06-14
- Last updated
- 2018-05-15
Frequently asked questions
- What is Mark Watanabe's NPI number?
- Mark Watanabe's National Provider Identifier (NPI) is 1104020841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Watanabe's specialty?
- Mark Watanabe is listed in the NPPES registry with a primary specialty of Psychiatric Pharmacist (Pharmacy Service Providers).
- Where is Mark Watanabe located?
- Mark Watanabe's practice location on file with NPPES is 1380 Howard St Rm 130, San Francisco, CA 94103.
- What is Mark Watanabe's phone number?
- The practice phone number listed in the NPPES registry for Mark Watanabe is (415) 255-3659.
- Is Mark Watanabe's NPI active?
- Yes — Mark Watanabe's NPI (1104020841) is active in the NPPES registry as of the last update on 2018-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.