Louise Walter, M.D.
NPI 1689659187 · Geriatric Medicine (Internal Medicine) Physician · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louise Walter, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in San Francisco, CA (NPI 1689659187).
Provider details
- NPI number
- 1689659187
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- License
- A061028 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Louise Walter's NPI number?
- Louise Walter's National Provider Identifier (NPI) is 1689659187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louise Walter's specialty?
- Louise Walter is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Louise Walter located?
- Louise Walter's practice location on file with NPPES is 4150 Clement St, San Francisco, CA 94121-1545.
- What is Louise Walter's phone number?
- The practice phone number listed in the NPPES registry for Louise Walter is (415) 221-4810.
- Does Louise Walter accept Medicare?
- Louise Walter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louise Walter's NPI active?
- Yes — Louise Walter's NPI (1689659187) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.