David Isaac Leroy, DO
Hematology & Oncology Physician · Grand Blanc, MI
David Isaac Leroy, DO is a hematology & oncology physician with a practice address in Grand Blanc, Michigan, and NPI 1922703479, issued on Apr 4, 2023. Check the license (Michigan 5101029371, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- David Isaac Leroy
- Credential
- DO
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 5101029371 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1 Genesys Pkwy, Grand Blanc, MI 48439
- Phone
- (810) 606-5000
- Enumerated
- Apr 4, 2023
- Record last updated
- Apr 23, 2026
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 340 in Michigan → Look up another NPI →
Also registered at 1 Genesys Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Missa Abuzamel, DOPulmonary Disease Physician1689232951
- Mary AdekalePsychologist1457838005
- Ceilidh AhearnInternal Medicine Physician1619814431
- Maruf Ahmed, DOInternal Medicine Physician1407792476
- Muhammad Ahmed, MDFamily Medicine Physician1710800578
- Sana Ahmed, MDFamily Medicine Physician1871974592
Verify David Isaac Leroy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101029371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
90 Medicare Part D claims for 27 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium12 claims
- Atorvastatin Calcium11 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.
David Isaac Leroy among 340 hematology & oncology physician records in Michigan
David Isaac Leroy, DO is one of 340 hematology & oncology physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 96% of them.
- NPI issued2023 · 96% of these records are older, under 1% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2026 · 52% 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 Michigan 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 Michigan
There are 340 hematology & oncology physician records in Michigan.
All 340 in Michigan → Every provider in Grand Blanc → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Emad Kandah, MDGrand Blanc, MI 484391245891886
- Daniela Weiss, DOGrand Blanc, MI 484391770011603
- Stuart Weiner, D.O.Goodrich, MI 484381760448682
- Shalini Thoutreddy, MDLapeer, MI 484461831197581
- Patricia Ball, M.D.Commerce Township, MI 483821609948561
- Michelene Liebman, M.D.Commerce Township, MI 483821700063310
- Paul Adams, M.D.Flint, MI 485031811952591
- Roger Black, D.O.Flint, MI 485031477518157
Common questions
What is David Isaac Leroy, DO's NPI number?
David Isaac Leroy, DO's National Provider Identifier (NPI) is 1922703479, issued on Apr 4, 2023. An NPI identifies a provider in billing; it is not a license.
Where is David Isaac Leroy, DO located?
The NPPES record lists a practice address at 1 Genesys Pkwy, Grand Blanc, MI, 48439. Phone: (810) 606-5000. Providers update this record themselves, so call before visiting.
How can I verify David Isaac Leroy, DO's license?
NPPES lists Michigan license number 5101029371, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Isaac Leroy, DO prescribe under Medicare Part D?
In 2024, David Isaac Leroy, DO had 90 Medicare Part D claims for 27 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.