Douglass Marum, PHD MARRIAGE AND FAM
NPI 1598948523 · Marriage & Family Therapist · Napa, CA
Douglass Marum, PHD MARRIAGE AND FAM is a Marriage & Family Therapist provider in Napa, CA (NPI 1598948523).
Provider details
- NPI number
- 1598948523
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- PHD MARRIAGE AND FAM
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFT7799 (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
- 2007-12-13
- Last updated
- 2007-12-13
Frequently asked questions
- What is Douglass Marum's NPI number?
- Douglass Marum's National Provider Identifier (NPI) is 1598948523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglass Marum's specialty?
- Douglass Marum is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Douglass Marum located?
- Douglass Marum's practice location on file with NPPES is 575 Lincoln Ave, Napa, CA 94558.
- What is Douglass Marum's phone number?
- The practice phone number listed in the NPPES registry for Douglass Marum is (707) 257-3500.
- Is Douglass Marum's NPI active?
- Yes — Douglass Marum's NPI (1598948523) is active in the NPPES registry as of the last update on 2007-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.