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Douglas Holwerda, LMHC
NPI 1790883072 · Mental Health Counselor · Seattle, WA
Douglas Holwerda, LMHC is a Mental Health Counselor provider in Seattle, WA (NPI 1790883072).
Provider details
- NPI number
- 1790883072
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC
- Sex
- Male
- Sole proprietor
- No
- License
- LH00006816 (WA)
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
1410 Ne 66th St
Seattle, WA 98115-6744
Phone: (206) 527-8336
Fax: (206) 517-4195
Street-level locationGet directions
Mailing address
905 Spruce St Ste 300
Seattle, WA 98104-2474
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Douglas Holwerda's NPI number?
- Douglas Holwerda's National Provider Identifier (NPI) is 1790883072, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Holwerda's specialty?
- Douglas Holwerda is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Douglas Holwerda located?
- Douglas Holwerda's practice location on file with NPPES is 1410 Ne 66th St, Seattle, WA 98115-6744.
- What is Douglas Holwerda's phone number?
- The practice phone number listed in the NPPES registry for Douglas Holwerda is (206) 527-8336.
- Is Douglas Holwerda's NPI active?
- Yes — Douglas Holwerda's NPI (1790883072) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.