Gregory Lewis, M.A., LMHC
NPI 1891839734 · Mental Health Counselor · Seattle, WA
Gregory Lewis, M.A., LMHC is a Mental Health Counselor provider in Seattle, WA (NPI 1891839734).
Provider details
- NPI number
- 1891839734
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- M.A., LMHC
- Sex
- Male
- Sole proprietor
- Yes
- License
- LH00009156 (WA)
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
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
Mailing address
Registry dates
- Enumerated
- 2007-02-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Lewis's NPI number?
- Gregory Lewis's National Provider Identifier (NPI) is 1891839734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Lewis's specialty?
- Gregory Lewis is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Lewis located?
- Gregory Lewis's practice location on file with NPPES is 1523 E Madison St, Seattle, WA 98122-4013.
- What is Gregory Lewis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Lewis is (206) 387-6429.
- Is Gregory Lewis's NPI active?
- Yes — Gregory Lewis's NPI (1891839734) 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.