David Mazariegos, M.D.
Psychiatry Physician · Fresno, CA
David Mazariegos, M.D. is a psychiatry physician with a practice address in Fresno, California, and NPI 1104169135, issued on Mar 27, 2013. Check the license (California A137509, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Mazariegos
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A137509 CA
Self-reported in NPPES; status is on the state search - Practice location
- 155 N Fresno St, Fresno, CA 93701
- Phone
- (832) 577-9290
- Enumerated
- Mar 27, 2013
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170327002166); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 155 N Fresno St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Waleed AbdelfattahStudent in an Organized Health Care Education/Training Program1982544359
- Khaled Mohammed Abdullah, MBBSStudent in an Organized Health Care Education/Training Program1003552472
- Mohammad Abidali, MDStudent in an Organized Health Care Education/Training Program1174383764
- Charlie Abraham, MDSleep Medicine (Internal Medicine) Physician1588841043
- Luke Adams, MDStudent in an Organized Health Care Education/Training Program1497458855
- Yasmeen Afridi, DOStudent in an Organized Health Care Education/Training Program1548964489
Verify David Mazariegos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A137509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average psychiatry physician in 2024
1,597 Medicare Part D claims for 253 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Clonazepam104 claims
- Quetiapine Fumarate89 claims
- Duloxetine Hcl86 claims
- Sertraline Hcl83 claims
- Mirtazapine81 claims
- Olanzapine78 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Mazariegos among 8,673 psychiatry physician records in California
David Mazariegos, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2013 · median 2005 among the 3,295 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Fresno → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Nicholas Betchel, DOFresno, CA 937011134625288
- Craig Campbell, MDFresno, CA 937011679676506
- Tejas Yogesh Chhaya, D.O.Fresno, CA 937011376906990
- Andrew Goddard, M.D.Fresno, CA 937011346294725
- Yan GrafmanFresno, CA 937011558527887
- James Kastendiek, M.D.Fresno, CA 937011295062925
- Joseph Katz, MDFresno, CA 937011689170797
- Hoyle Leigh, M.D.Fresno, CA 937011750490678
Common questions
What is David Mazariegos, M.D.'s NPI number?
David Mazariegos, M.D.'s National Provider Identifier (NPI) is 1104169135, issued on Mar 27, 2013. An NPI identifies a provider in billing; it is not a license.
Where is David Mazariegos, M.D. located?
The NPPES record lists a practice address at 155 N Fresno St, Fresno, CA, 93701. Phone: (832) 577-9290. Providers update this record themselves, so call before visiting.
How can I verify David Mazariegos, M.D.'s license?
NPPES lists California license number A137509, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Mazariegos, M.D. prescribe under Medicare Part D?
In 2024, David Mazariegos, M.D. had 1,597 Medicare Part D claims for 253 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.