Carlos Contreras, M.D.
NPI 1528325412 · Psychiatry Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carlos Contreras, M.D. is a Psychiatry Physician provider in Walnut Creek, CA (NPI 1528325412).
Provider details
- NPI number
- 1528325412
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A129587 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 23 |
| Clonazepam | 23 |
| Mirtazapine | 13 |
| Sertraline Hcl | 12 |
| Amitriptyline Hcl | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$59 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 16111 Plummer StNorth Hills, CA 91343-2036Phone: (818) 895-9349
Registry dates
- Enumerated
- 2012-04-16
- Last updated
- 2025-08-25
- Certified
- 2025-08-25
Frequently asked questions
- What is Carlos Contreras's NPI number?
- Carlos Contreras's National Provider Identifier (NPI) is 1528325412, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carlos Contreras's specialty?
- Carlos Contreras is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Carlos Contreras located?
- Carlos Contreras's practice location on file with NPPES is 3100 Oak Rd Ste 270, Walnut Creek, CA 94597-2078.
- What is Carlos Contreras's phone number?
- The practice phone number listed in the NPPES registry for Carlos Contreras is (925) 944-9711.
- Does Carlos Contreras accept Medicare?
- Carlos Contreras is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carlos Contreras's NPI active?
- Yes — Carlos Contreras's NPI (1528325412) is active in the NPPES registry as of the last update on 2025-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.