Sarah Lowenthal, M.D., a Professional Corporation
NPI 1619433216 · Family Medicine Physician · Mill Valley, CA
Sarah Lowenthal, M.D., a Professional Corporation is a Family Medicine Physician organization in Mill Valley, CA (NPI 1619433216).
Provider details
- NPI number
- 1619433216
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sarah Lowenthal, President and Owner(415) 971-7824
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
7 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
- 2019-02-19
- Last updated
- 2019-02-19
Frequently asked questions
- What is Sarah Lowenthal, M.D., a Professional Corporation's NPI number?
- Sarah Lowenthal, M.D., a Professional Corporation's National Provider Identifier (NPI) is 1619433216, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sarah Lowenthal, M.D., a Professional Corporation?
- Sarah Lowenthal, M.D., a Professional Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Lowenthal, M.D., a Professional Corporation located?
- Sarah Lowenthal, M.D., a Professional Corporation's practice location on file with NPPES is 655 Redwood Hwy Frontage Rd Ste 364, Mill Valley, CA 94941-3057.
- What is Sarah Lowenthal, M.D., a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Sarah Lowenthal, M.D., a Professional Corporation is (415) 569-4918.
- Who is the authorized official for Sarah Lowenthal, M.D., a Professional Corporation?
- The authorized official listed on Sarah Lowenthal, M.D., a Professional Corporation's NPPES record is Sarah Lowenthal, President and Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sarah Lowenthal, M.D., a Professional Corporation's NPI active?
- Yes — Sarah Lowenthal, M.D., a Professional Corporation's NPI (1619433216) is active in the NPPES registry as of the last update on 2019-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.