Mark Demeo, MD
NPI 1447208921 · Anatomic Pathology & Clinical Pathology Physician · Santa Rosa, CA
Mark Demeo, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Santa Rosa, CA (NPI 1447208921).
Provider details
- NPI number
- 1447208921
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G12988 (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
- 2006-05-05
- Last updated
- 2008-01-29
Frequently asked questions
- What is Mark Demeo's NPI number?
- Mark Demeo's National Provider Identifier (NPI) is 1447208921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Demeo's specialty?
- Mark Demeo is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Demeo located?
- Mark Demeo's practice location on file with NPPES is 1165 Montgomery Dr, Santa Rosa, CA 95405-4801.
- What is Mark Demeo's phone number?
- The practice phone number listed in the NPPES registry for Mark Demeo is (209) 575-4575.
- Is Mark Demeo's NPI active?
- Yes — Mark Demeo's NPI (1447208921) is active in the NPPES registry as of the last update on 2008-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.