Sarah Z. Hassan, M.D
Hematology & Oncology Physician · Fountain Valley, CA
Sarah Z. Hassan, M.D is a hematology & oncology physician with a practice address in Fountain Valley, California, and NPI 1689935066, issued on Jun 2, 2012. Check the license (California A156103, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sarah Z. Hassan
- Credential
- M.D
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A156103 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18111 Brookhurst St Ste 6100, Fountain Valley, CA 92708
- Phone
- (714) 378-7330
- Enumerated
- Jun 2, 2012
- Record last updated
- May 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (949) 380-0907
- Medicare enrollment
- Enrolled (PECOS I20200609000439); accepts Medicare assignment
- Medical or professional school
- Mercy College, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 18111 Brookhurst St Ste 6100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jody Carr, PA-CPhysician Assistant1881882264
- Amanda GuevaraPhysician Assistant1174357255
- Jack Jacoub, M.D.Hematology & Oncology Physician1528016318
- Gurpreet Multani, MDHematology & Oncology Physician1417117979
- Casie Nguyen, FNPFamily Nurse Practitioner1801155726
- Amol Rao, M.D.Hematology & Oncology Physician1689871154
Verify Sarah Z. Hassan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156103Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
762 Medicare Part D claims for 241 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole222 claims
- Folic Acid69 claims
- Exemestane53 claims
- Letrozole43 claims
- Hydroxyurea30 claims
- Eliquis29 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): 76.7 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: $268.17
4 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Memorialcare Medical FoundationAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Fountain Valley →
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Sarah Z. Hassan, M.D's NPI number?
Sarah Z. Hassan, M.D's National Provider Identifier (NPI) is 1689935066, issued on Jun 2, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Z. Hassan, M.D located?
The NPPES record lists a practice address at 18111 Brookhurst St Ste 6100, Fountain Valley, CA, 92708. Phone: (714) 378-7330. Providers update this record themselves, so call before visiting.
How can I verify Sarah Z. Hassan, M.D's license?
NPPES lists California license number A156103, 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 Sarah Z. Hassan, M.D prescribe under Medicare Part D?
In 2024, Sarah Z. Hassan, M.D had 762 Medicare Part D claims for 241 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Sarah Z. Hassan, M.D's MIPS final score?
The 2023 MIPS final score is 76.7 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.