David Mazariegos, M.D.
NPI 1104169135 · Psychiatry Physician · Fresno, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Mazariegos, M.D. is a Psychiatry Physician provider in Fresno, CA (NPI 1104169135).
Provider details
- NPI number
- 1104169135
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A137509 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
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 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 104 | 21 |
| Quetiapine Fumarate | 89 | 28 |
| Duloxetine Hcl | 86 | 28 |
| Sertraline Hcl | 83 | 33 |
| Mirtazapine | 81 | 29 |
| Olanzapine | 78 | 23 |
| Alprazolam | 75 | 13 |
Practice location
Mailing address
Additional practice locations (1)
- 400 W Mineral King AveVisalia, CA 93291-6237Phone: (559) 624-2000
Registry dates
- Enumerated
- 2013-03-27
- Last updated
- 2021-12-22
Frequently asked questions
- What is David Mazariegos's NPI number?
- David Mazariegos's National Provider Identifier (NPI) is 1104169135, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Mazariegos's specialty?
- David Mazariegos is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is David Mazariegos located?
- David Mazariegos's practice location on file with NPPES is 155 N Fresno St, Fresno, CA 93701-2302.
- What is David Mazariegos's phone number?
- The practice phone number listed in the NPPES registry for David Mazariegos is (832) 577-9290.
- Does David Mazariegos accept Medicare?
- David Mazariegos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Mazariegos's NPI active?
- Yes — David Mazariegos's NPI (1104169135) is active in the NPPES registry as of the last update on 2021-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.