Mazen Hashisho, M.D.
Vascular Surgery Physician · Garden Grove, CA
Mazen Hashisho, M.D. is a vascular surgery physician with a practice address in Garden Grove, California, and NPI 1255524427, issued on Aug 21, 2007. Check the license (California A94329, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mazen Hashisho
- Credential
- M.D.
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License numbers
- A94329 CA
002845 NY
MD441265 PA
Self-reported in NPPES; status is on the state search - Practice location
- 12555 Garden Grove Blvd Ste 403, Garden Grove, CA 92843
- Phone
- (562) 506-0176
- Enumerated
- Aug 21, 2007
- Record last updated
- Jun 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (562) 506-0053
- Medicare enrollment
- Enrolled (PECOS I20130522000721); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 12555 Garden Grove Blvd Ste 403
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mercedeh Esmaeili, FNPFamily Nurse Practitioner1750735411
Verify Mazen Hashisho in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A94329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average vascular surgery physician in 2024
134 Medicare Part D claims for 74 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 23 claims were for opioids.
Most prescribed
- Clopidogrel42 claims
- Hydrocodone-Acetaminophen20 claims
- Methylprednisolone15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $31,460.29
35 payments; by number, the most common kind was food and beverage; the largest payer was AngioDynamics, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Monterey Bay Vascular IncAptos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vascular Surgery Physician providers in California
There are 580 vascular surgery physician records in California.
Other vascular surgery physician records in California
- Oliver Aalami, M.D.Stanford, CA1225229024
- Shahram Aarabi, MDOakland, CA1972700458
- Arad Abadi, MDLancaster, CA1730673724
- Ryan Abdul-HaqqWest Hollywood, CA1386087864
- Andrew Abi-Chaker, M.D.Sherman Oaks, CA1528488467
- Ahmed Abou-Zamzam, M.D.Loma Linda, CA1558306795
- Joseph Abu-Dalu, MDLos Angeles, CA1821157587
- Queen Abure, MDSan Francisco, CA1710772074
- Riad Adoumie, M.D.Torrance, CA1467465930
- Massoud Agahi, M.D.Beverly Hills, CA1952367070
Common questions
What is Mazen Hashisho, M.D.'s NPI number?
Mazen Hashisho, M.D.'s National Provider Identifier (NPI) is 1255524427, issued on Aug 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mazen Hashisho, M.D. located?
The NPPES record lists a practice address at 12555 Garden Grove Blvd Ste 403, Garden Grove, CA, 92843. Phone: (562) 506-0176. Providers update this record themselves, so call before visiting.
How can I verify Mazen Hashisho, M.D.'s license?
NPPES lists California license number A94329, 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 Mazen Hashisho, M.D. prescribe under Medicare Part D?
In 2024, Mazen Hashisho, M.D. had 134 Medicare Part D claims for 74 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions only.
What is Mazen Hashisho, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.