Mark Demanes, PH.D., MFT
NPI 1891975108 · Marriage & Family Therapist · Copperopolis, CA
Mark Demanes, PH.D., MFT is a Marriage & Family Therapist provider in Copperopolis, CA (NPI 1891975108).
Provider details
- NPI number
- 1891975108
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- PH.D., MFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC27768 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-11-05
- Last updated
- 2007-11-05
Frequently asked questions
- What is Mark Demanes's NPI number?
- Mark Demanes's National Provider Identifier (NPI) is 1891975108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Demanes's specialty?
- Mark Demanes is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Mark Demanes located?
- Mark Demanes's practice location on file with NPPES is 120 Athena Dr, Copperopolis, CA 95228-9329.
- What is Mark Demanes's phone number?
- The practice phone number listed in the NPPES registry for Mark Demanes is (510) 435-5298.
- Is Mark Demanes's NPI active?
- Yes — Mark Demanes's NPI (1891975108) is active in the NPPES registry as of the last update on 2007-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.