Gregory Larimer, M.D.
NPI 1831546191 · Psychiatry Physician · Houston, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Larimer, M.D. is a Psychiatry Physician provider in Houston, TX (NPI 1831546191).
Provider details
- NPI number
- 1831546191
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- S3223 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
17 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 17 | $205 |
Typical Medicare-allowed amounts for these services range $205–$205 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1502 Taub LoopHouston, TX 77030-1608Phone: (713) 970-7000
Registry dates
- Enumerated
- 2016-05-17
- Last updated
- 2020-03-26
- Certified
- 2020-03-26
Frequently asked questions
- What is Gregory Larimer's NPI number?
- Gregory Larimer's National Provider Identifier (NPI) is 1831546191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Larimer's specialty?
- Gregory Larimer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Larimer located?
- Gregory Larimer's practice location on file with NPPES is 1941 East Rd, Houston, TX 77054-6010.
- What is Gregory Larimer's phone number?
- The practice phone number listed in the NPPES registry for Gregory Larimer is (713) 486-2570.
- Does Gregory Larimer accept Medicare?
- Gregory Larimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Larimer's NPI active?
- Yes — Gregory Larimer's NPI (1831546191) is active in the NPPES registry as of the last update on 2020-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.