Donald Guernsey, MS LMFT
NPI 1134390354 · Marriage & Family Therapist · Grand Rapids, MI
Donald Guernsey, MS LMFT is a Marriage & Family Therapist provider in Grand Rapids, MI (NPI 1134390354).
Provider details
- NPI number
- 1134390354
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS LMFT
- Sex
- Male
- Sole proprietor
- No
- License
- 4101006200 (MI)
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
- 2008-03-14
- Last updated
- 2023-08-02
- Certified
- 2023-08-02
Frequently asked questions
- What is Donald Guernsey's NPI number?
- Donald Guernsey's National Provider Identifier (NPI) is 1134390354, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Guernsey's specialty?
- Donald Guernsey is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Donald Guernsey located?
- Donald Guernsey's practice location on file with NPPES is 719 N Center Dr Nw, Grand Rapids, MI 49544-8215.
- What is Donald Guernsey's phone number?
- The practice phone number listed in the NPPES registry for Donald Guernsey is (616) 301-8000.
- Is Donald Guernsey's NPI active?
- Yes — Donald Guernsey's NPI (1134390354) is active in the NPPES registry as of the last update on 2023-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.