Elliot Liff, M.D.
NPI 1427310457 · Internal Medicine Physician · Mill Valley, CA
Elliot Liff, M.D. is a Internal Medicine Physician provider in Mill Valley, CA (NPI 1427310457).
Provider details
- NPI number
- 1427310457
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C0017801 (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
14 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
- 2012-06-14
- Last updated
- 2012-06-14
Frequently asked questions
- What is Elliot Liff's NPI number?
- Elliot Liff's National Provider Identifier (NPI) is 1427310457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elliot Liff's specialty?
- Elliot Liff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Elliot Liff located?
- Elliot Liff's practice location on file with NPPES is 40 Underhill Rd, Mill Valley, CA 94941-1437.
- What is Elliot Liff's phone number?
- The practice phone number listed in the NPPES registry for Elliot Liff is (415) 383-5793.
- Is Elliot Liff's NPI active?
- Yes — Elliot Liff's NPI (1427310457) is active in the NPPES registry as of the last update on 2012-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.