Walter Quan, M.D.
Hematology & Oncology Physician · Moreno Valley, CA
Walter Quan, M.D. is a hematology & oncology physician with a practice address in Moreno Valley, California, and NPI 1760479000, issued on Oct 3, 2005. Check the license (California 74451, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter Quan
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 74451 CA
35056028 OH
Self-reported in NPPES; status is on the state search - Practice location
- 26520 Cactus Ave, Moreno Valley, CA 92555
- Phone
- (909) 558-4910
- Enumerated
- Oct 3, 2005
- Record last updated
- Dec 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 0924674 OH
- Medicare enrollment
- Enrolled (PECOS I20191025000356); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 26520 Cactus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ihab Abed, MDStudent in an Organized Health Care Education/Training Program1912830514
- Mohamed Abu-Qaoud, M.D.Internal Medicine Physician1366635534
- Barbara Ackerman, PH.D.Clinical Psychologist1639126410
- Sana Afroz, MDRheumatology Physician1356724074
- Georgina Aguilar-Portillo, MDFamily Medicine Physician1144804691
- Adolfo Aguilera, MDFamily Medicine Physician1477609808
Verify Walter Quan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 74451Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
187 Medicare Part D claims for 48 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Imbruvica25 claims
- Imatinib Mesylate21 claims
- Letrozole18 claims
- Lenalidomide11 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): 81.9 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).
Bills Medicare through one group practice
- University OF Florida Jacksonville Physicians, Inc.Jacksonville, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter Quan among 1,583 hematology & oncology physician records in California
Walter Quan, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1986 · median 2003 among the 1,124 with a school on file
- Record last updated2016 · 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 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 Moreno Valley → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Keerti Khandelwal, MDMoreno Valley, CA 925551972746287
- Kishore Sehgal, M.D.Hemet, CA 925431689671034
- James Tsai, M.D.Hemet, CA 925431437152857
- Waheed Murad, M.D, MRCPTemecula, CA 925911205098498
- Bruce Hayton, M.D.Wildomar, CA 925951710030192
- Samer AlkassisIrvine, CA 926041124681515
- Muhammad Muslim, MDRiverside, CA 925061861571218
- Zorawar Noor, M.D., M.H.S.Irvine, CA 926041376802843
Common questions
What is Walter Quan, M.D.'s NPI number?
Walter Quan, M.D.'s National Provider Identifier (NPI) is 1760479000, issued on Oct 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Walter Quan, M.D. located?
The NPPES record lists a practice address at 26520 Cactus Ave, Moreno Valley, CA, 92555. Phone: (909) 558-4910. Providers update this record themselves, so call before visiting.
How can I verify Walter Quan, M.D.'s license?
NPPES lists California license number 74451, 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 Walter Quan, M.D. prescribe under Medicare Part D?
In 2024, Walter Quan, M.D. had 187 Medicare Part D claims for 48 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Walter Quan, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.9 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.