Gregory Gray, MD
NPI 1326129479 · Psychiatry Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Gray, MD is a Psychiatry Physician provider in Ventura, CA (NPI 1326129479).
Provider details
- NPI number
- 1326129479
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G52593 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
823 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) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 265 | $74 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 180 | $97 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 153 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 147 | $136 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 78 | $135 |
Typical Medicare-allowed amounts for these services range $74–$136 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bupropion Hclbrand: Bupropion Xl | 58 | 14 |
| Lamotrigine | 54 | 12 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 52 | 11 |
| Escitalopram Oxalate | 52 | 14 |
| Trazodone Hcl | 51 | 17 |
| Methylphenidate Hcl | 47 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-17
- Last updated
- 2025-02-05
- Certified
- 2025-02-05
Frequently asked questions
- What is Gregory Gray's NPI number?
- Gregory Gray's National Provider Identifier (NPI) is 1326129479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Gray's specialty?
- Gregory Gray is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Gray located?
- Gregory Gray's practice location on file with NPPES is 1500 Palma Dr Ste 200a, Ventura, CA 93003-6451.
- What is Gregory Gray's phone number?
- The practice phone number listed in the NPPES registry for Gregory Gray is (805) 263-0501.
- Does Gregory Gray accept Medicare?
- Gregory Gray is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Gray's NPI active?
- Yes — Gregory Gray's NPI (1326129479) is active in the NPPES registry as of the last update on 2025-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.