Dr. Aileen Nagako Watanabe, MD
- Part D claims, 2024
- 1,603
- Industry payments
- $150
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 2333 Buchanan St, San Francisco, CA 94115
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD
Acute Care Hospital outpatient department · San Francisco, California
Find Dr. Watanabe's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Aileen Nagako Watanabe is an internist in San Francisco, California
Dr. Watanabe practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California.
Dr. Watanabe's NPI, 1912993627, was assigned on September 27, 2005. Dr. Watanabe holds California license G52863.
- NPI
- 1912993627NPI Registry (opens in a new tab)
- NPI enumeration date
- September 27, 2005
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Aileen Nagako Watanabe practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California
Dr. Watanabe's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD, at 2333 Buchanan St, San Francisco, CA 94115.
- California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD2333 Buchanan St, San Francisco, CA 94115
Source: Dmand AI Affiliation Data
Dr. Aileen Nagako Watanabe is affiliated with 2 sites of care and 1 medical group
Dr. Watanabe's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. The medical group on file is National Orthopedic Imaging Associates. Dmand AI also links Dr. Watanabe to 1 more group practice or clinic, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Aileen Nagako Watanabe's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Watanabe practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Aileen Nagako Watanabe is one of 16,751 internists in California
Internal medicine is Dr. Watanabe's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Watanabe is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Watanabe
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Aileen Nagako Watanabe's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Watanabe's median patient age at 76, with 67% women.
Dr. Watanabe's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women67%
- Men23%
Source: Dmand AI Patient Panel Data
Dr. Aileen Nagako Watanabe wrote 1,603 Medicare Part D claims in 2024
In 2024, Dr. Watanabe wrote 1,603 Medicare Part D claims for 128 patients. 85% of them were for generic drugs. CMS names the drug for 1,254 of them, across 34 drugs with 11 or more claims each, at $134,018 in total drug cost. In 2023, CMS named 1,379 claims across 39 drugs.
Dr. Watanabe's Part D claims by kind of drug, 2024
- Generic1,360 claims85%
- Brand-name and other243 claims15%
Dr. Watanabe's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Watanabe's Part D claims, 2024
- Antibiotics4%57 of 1,603 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,3792024: 1,2549%
Drugs named by CMS: 34 in 2024, 39 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Aileen Nagako Watanabe received $150 in industry payments from 2016 to 2024
CMS Open Payments shows 2 general payments to Dr. Watanabe from 2 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $125.
General payments to Dr. Watanabe by program year, 2016 to 2024
Companies that paid Dr. Watanabe the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Aileen Nagako Watanabe's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Aileen Nagako Watanabe
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Aileen Nagako Watanabe's NPI number?
Dr. Aileen Nagako Watanabe's NPI number is 1912993627. It was assigned on September 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Aileen Nagako Watanabe?
Dr. Aileen Nagako Watanabe is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Aileen Nagako Watanabe practice?
Dr. Watanabe practices at 2333 Buchanan St, San Francisco, CA 94115. Dr. Watanabe's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. Dmand AI also links Dr. Watanabe to 1 group practice or clinic.
What is Dr. Aileen Nagako Watanabe's medical license number?
Dr. Watanabe holds California license G52863.
What medical group is Dr. Aileen Nagako Watanabe part of?
Dr. Watanabe is linked to National Orthopedic Imaging Associates.
What drugs does Dr. Aileen Nagako Watanabe prescribe most?
In 2024 Medicare Part D data, Dr. Watanabe's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Aileen Nagako Watanabe received payments from drug or device companies?
CMS Open Payments shows $150 in general payments to Dr. Watanabe from 2 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Aileen Nagako Watanabe been practicing?
Dr. Watanabe's NPI was assigned in 2005.
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