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Gregory Kotlarz, PH.D.
NPI 1134160732 · Clinical Psychologist · Royal Oak, MI
Gregory Kotlarz, PH.D. is a Clinical Psychologist provider in Royal Oak, MI (NPI 1134160732).
Provider details
- NPI number
- 1134160732
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 6301006594 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
221 S Main St
Suite 201
Royal Oak, MI 48067-2611
Phone: (248) 398-6459
Street-level locationGet directions
Mailing address
221 S Main St
Royal Oak, MI 48067-2611
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2022-07-08
- Certified
- 2022-07-08
Frequently asked questions
- What is Gregory Kotlarz's NPI number?
- Gregory Kotlarz's National Provider Identifier (NPI) is 1134160732, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Kotlarz's specialty?
- Gregory Kotlarz is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gregory Kotlarz located?
- Gregory Kotlarz's practice location on file with NPPES is 221 S Main St, Royal Oak, MI 48067-2611.
- What is Gregory Kotlarz's phone number?
- The practice phone number listed in the NPPES registry for Gregory Kotlarz is (248) 398-6459.
- Is Gregory Kotlarz's NPI active?
- Yes — Gregory Kotlarz's NPI (1134160732) is active in the NPPES registry as of the last update on 2022-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.