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Mark Bontrager, MSW, LCSW
NPI 1801946785 · Clinical Social Worker · Napa, CA
Mark Bontrager, MSW, LCSW is a Clinical Social Worker provider in Napa, CA (NPI 1801946785).
Provider details
- NPI number
- 1801946785
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- 23579 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
1801 Oak St
Napa, CA 94559-2337
Phone: (707) 224-8266
Street-level locationGet directions
Mailing address
Po Box 841
Napa, CA 94559-0841
Registry dates
- Enumerated
- 2007-01-11
- Last updated
- 2015-09-25
Frequently asked questions
- What is Mark Bontrager's NPI number?
- Mark Bontrager's National Provider Identifier (NPI) is 1801946785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Bontrager's specialty?
- Mark Bontrager is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Bontrager located?
- Mark Bontrager's practice location on file with NPPES is 1801 Oak St, Napa, CA 94559-2337.
- What is Mark Bontrager's phone number?
- The practice phone number listed in the NPPES registry for Mark Bontrager is (707) 224-8266.
- Is Mark Bontrager's NPI active?
- Yes — Mark Bontrager's NPI (1801946785) is active in the NPPES registry as of the last update on 2015-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.