Aileen Watanabe, MD
NPI 1912993627 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aileen Watanabe, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1912993627).
Provider details
- NPI number
- 1912993627
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- G52863 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 | 186 | 51 |
| Losartan Potassium | 82 | 22 |
| Amlodipine Besylate | 73 | 23 |
| Hydrochlorothiazide | 63 | 16 |
| Apixabanbrand: Eliquis | 58 | — |
| Metformin Hcl | 58 | 15 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-27
- Last updated
- 2011-04-28
Frequently asked questions
- What is Aileen Watanabe's NPI number?
- Aileen Watanabe's National Provider Identifier (NPI) is 1912993627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aileen Watanabe's specialty?
- Aileen Watanabe is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aileen Watanabe located?
- Aileen Watanabe's practice location on file with NPPES is 2186 Geary Blvd, San Francisco, CA 94115-3455.
- What is Aileen Watanabe's phone number?
- The practice phone number listed in the NPPES registry for Aileen Watanabe is (415) 292-3500.
- Does Aileen Watanabe accept Medicare?
- Aileen Watanabe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aileen Watanabe's NPI active?
- Yes — Aileen Watanabe's NPI (1912993627) is active in the NPPES registry as of the last update on 2011-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.