Mariam Gheissari
Family Medicine Physician · Ventura, CA
Mariam Gheissari is a family medicine physician with a practice address in Ventura, California, and NPI 1265052633, issued on Apr 25, 2020. Check the license (California 19944, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mariam Gheissari
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 19944 CA
Self-reported in NPPES; status is on the state search - Practice location
- 147 N Brent St, Ventura, CA 93003
- Phone
- (805) 948-5672
- Enumerated
- Apr 25, 2020
- Record last updated
- Aug 4, 2023
- Medicare enrollment
- Enrolled (PECOS I20231011003463); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 147 N Brent St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Adkins, M.D.Internal Medicine Physician1194968362
- Niaz AhankoobStudent in an Organized Health Care Education/Training Program1568103133
- Samira Ahrari, MDStudent in an Organized Health Care Education/Training Program1396680039
- Ralph Akl, DOFamily Medicine Physician1962071654
- Abdul Latif Al-Kassir, DOStudent in an Organized Health Care Education/Training Program1437909835
- Adnan Albrejawi Alhomsi, MDStudent in an Organized Health Care Education/Training Program1144023003
Verify Mariam Gheissari in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 19944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average family medicine physician in 2024
674 Medicare Part D claims for 222 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 29 claims were for opioids.
Most prescribed
- Atorvastatin Calcium67 claims
- Losartan Potassium31 claims
- Levothyroxine Sodium25 claims
- Rosuvastatin Calcium23 claims
- Albuterol Sulfate Hfa21 claims
- Hydrocodone-Acetaminophen21 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): 73.6 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).
Bills Medicare through one group practice
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariam Gheissari among 17,133 family medicine physician records in California
Mariam Gheissari is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
234 family medicine physician records list a practice address in Ventura
They are 234 of the 4,435 NPPES records with a practice address in Ventura, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Ventura → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Charles Adams, M.D.Ventura, CA 930031811925225
- Veronica Butler, M.D.Ventura, CA 930031063472736
- Eric Chun, M.D.Ventura, CA 930031699702381
- Michelle Daucett, D.O.Ventura, CA 930031003873035
- Derrick Dcosta, M.D.Ventura, CA 930031487699005
- James Hermann, M.D.Ventura, CA 930031861442899
- Theodore Hole, M.D.Ventura, CA 930031104873611
- Andrew Kerr, M.D.Ventura, CA 930031487695078
Common questions
What is Mariam Gheissari's NPI number?
Mariam Gheissari's National Provider Identifier (NPI) is 1265052633, issued on Apr 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mariam Gheissari located?
The NPPES record lists a practice address at 147 N Brent St, Ventura, CA, 93003. Phone: (805) 948-5672. Providers update this record themselves, so call before visiting.
How can I verify Mariam Gheissari's license?
NPPES lists California license number 19944, 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 Mariam Gheissari prescribe under Medicare Part D?
In 2024, Mariam Gheissari had 674 Medicare Part D claims for 222 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Mariam Gheissari's MIPS final score?
The 2023 MIPS final score is 73.6 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.