Catherine Buchanan, M.D.
NPI 1114903341 · Geriatric Medicine (Internal Medicine) Physician · Oakland, CA
Catherine Buchanan, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Oakland, CA (NPI 1114903341).
Provider details
- NPI number
- 1114903341
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A90592 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 22 |
| Atorvastatin Calcium | 16 |
| Levothyroxine Sodium | 14 |
| Liothyronine Sodium | 14 |
| Apixabanbrand: Eliquis | 12 |
| Trazodone Hcl | 12 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 11 |
| Metoprolol Succinate | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-20
- Last updated
- 2011-12-07
Frequently asked questions
- What is Catherine Buchanan's NPI number?
- Catherine Buchanan's National Provider Identifier (NPI) is 1114903341, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Buchanan's specialty?
- Catherine Buchanan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Buchanan located?
- Catherine Buchanan's practice location on file with NPPES is 100 Bay Pl, Oakland, CA 94610-4448.
- What is Catherine Buchanan's phone number?
- The practice phone number listed in the NPPES registry for Catherine Buchanan is (510) 891-8519.
- Is Catherine Buchanan's NPI active?
- Yes — Catherine Buchanan's NPI (1114903341) is active in the NPPES registry as of the last update on 2011-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.