Timothy Gruppen, PSYD
NPI 1689912081 · Clinical Psychologist · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Gruppen, PSYD is a Clinical Psychologist provider in Grand Rapids, MI (NPI 1689912081).
Provider details
- NPI number
- 1689912081
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6301015411 (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
13 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
- 2013-01-21
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Timothy Gruppen's NPI number?
- Timothy Gruppen's National Provider Identifier (NPI) is 1689912081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Gruppen's specialty?
- Timothy Gruppen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Timothy Gruppen located?
- Timothy Gruppen's practice location on file with NPPES is 655 Kenmoor Ave Se Ste 303, Grand Rapids, MI 49546-8622.
- What is Timothy Gruppen's phone number?
- The practice phone number listed in the NPPES registry for Timothy Gruppen is (616) 259-5365.
- Does Timothy Gruppen accept Medicare?
- Timothy Gruppen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Gruppen's NPI active?
- Yes — Timothy Gruppen's NPI (1689912081) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.