Diana Holloway, MFT
NPI 1659521847 · Marriage & Family Therapist · Monte Rio, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Holloway, MFT is a Marriage & Family Therapist provider in Monte Rio, CA (NPI 1659521847).
Provider details
- NPI number
- 1659521847
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
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
17 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2008-09-24
- Last updated
- 2018-06-27
Frequently asked questions
- What is Diana Holloway's NPI number?
- Diana Holloway's National Provider Identifier (NPI) is 1659521847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Holloway's specialty?
- Diana Holloway is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diana Holloway located?
- Diana Holloway's practice location on file with NPPES is 19375 Hwy 116, Monte Rio, CA 95462-0519.
- What is Diana Holloway's phone number?
- The practice phone number listed in the NPPES registry for Diana Holloway is (707) 865-1200.
- Does Diana Holloway accept Medicare?
- Diana Holloway is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Holloway's NPI active?
- Yes — Diana Holloway's NPI (1659521847) is active in the NPPES registry as of the last update on 2018-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.