Lydia Mertens, MD
NPI 1366592172 · Family Medicine Physician · Sebastopol, CA
Lydia Mertens, MD is a Family Medicine Physician provider in Sebastopol, CA (NPI 1366592172).
Provider details
- NPI number
- 1366592172
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G61214 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2007-01-12
- Last updated
- 2015-12-21
Frequently asked questions
- What is Lydia Mertens's NPI number?
- Lydia Mertens's National Provider Identifier (NPI) is 1366592172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lydia Mertens's specialty?
- Lydia Mertens is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lydia Mertens located?
- Lydia Mertens's practice location on file with NPPES is 6800 Palm Avenue Suite C, Sebastopol, CA 95472.
- What is Lydia Mertens's phone number?
- The practice phone number listed in the NPPES registry for Lydia Mertens is (707) 824-9999.
- Is Lydia Mertens's NPI active?
- Yes — Lydia Mertens's NPI (1366592172) is active in the NPPES registry as of the last update on 2015-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.