Mark Freeman, MD
NPI 1801898929 · Family Medicine Physician · Clearlake, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Freeman, MD is a Family Medicine Physician provider in Clearlake, CA (NPI 1801898929).
Provider details
- NPI number
- 1801898929
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G47688 (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
21 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
- 2005-06-01
- Last updated
- 2009-04-17
Frequently asked questions
- What is Mark Freeman's NPI number?
- Mark Freeman's National Provider Identifier (NPI) is 1801898929, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Freeman's specialty?
- Mark Freeman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Freeman located?
- Mark Freeman's practice location on file with NPPES is 15322 Lakeshore Dr, Clearlake, CA 95422-9815.
- What is Mark Freeman's phone number?
- The practice phone number listed in the NPPES registry for Mark Freeman is (707) 995-1362.
- Does Mark Freeman accept Medicare?
- Mark Freeman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Freeman's NPI active?
- Yes — Mark Freeman's NPI (1801898929) is active in the NPPES registry as of the last update on 2009-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.