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Kathleen Grannan, MD
NPI 1538245063 · Internal Medicine Physician · Oakland, CA
Kathleen Grannan, MD is a Internal Medicine Physician provider in Oakland, CA (NPI 1538245063).
Provider details
- NPI number
- 1538245063
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G55007 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
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.
Practice location
1950 Franklin St
Oakland, CA 94612-5190
Phone: (510) 987-1000
Street-level locationGet directions
Mailing address
1800 Harrison St Fl 7
Oakland, CA 94612-3466
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2021-11-30
Frequently asked questions
- What is Kathleen Grannan's NPI number?
- Kathleen Grannan's National Provider Identifier (NPI) is 1538245063, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Grannan's specialty?
- Kathleen Grannan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Grannan located?
- Kathleen Grannan's practice location on file with NPPES is 1950 Franklin St, Oakland, CA 94612-5190.
- What is Kathleen Grannan's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Grannan is (510) 987-1000.
- Is Kathleen Grannan's NPI active?
- Yes — Kathleen Grannan's NPI (1538245063) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.