Michael Diaz, M.D.
Hematology & Oncology Physician · New York, NY
Michael Diaz, M.D. is a hematology & oncology physician with a practice address in New York, New York, and NPI 1730229584, issued on Feb 8, 2007. Check the license (New York 114488, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Michael Diaz
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 114488 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1112 Park Ave, New York, NY 10128
- Phone
- (212) 876-4500
- Enumerated
- Feb 8, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (212) 831-6185
- Medicaid ID
- 00822931 NY
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 1112 Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hsiang Chen, M.D.Obstetrics & Gynecology Physician1528038908
- Arthur Ossias, MDHematology (Internal Medicine) Physician1518974930
Verify Michael Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 114488Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,736 Medicare Part D claims for 195 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 72 claims were for opioids.
Most prescribed
- Diclofenac Sodium186 claims
- Amlodipine Besylate121 claims
- Atorvastatin Calcium121 claims
- Losartan-Hydrochlorothiazide75 claims
- Nystatin67 claims
- Jardiance62 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.
Industry payments in 2024: $212.13
8 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. 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.
Michael Diaz among 1,163 hematology & oncology physician records in New York
Michael Diaz, M.D. is one of 1,163 hematology & oncology physician records with a practice address in New York. 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 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2007 · 61% 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 New York 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 New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in New York → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Edward Ambinder, M.D.New York, NY 101281265430748
- Ali Ameri, MDNew York, NY 101281164681540
- Jean Bustamante, M.D.New York, NY 101281942641097
- Solaiman Futuri, M.D.New York, NY 101281932342417
- Robert Gelfand, M.D.New York, NY 101281407855612
- Howard Greenberg, M.D.New York, NY 101281104847508
- Kelly Kacinski, NPNew York, NY 101281851240634
- Rachel Kramer, M.D.New York, NY 101281932108875
Common questions
What is Michael Diaz, M.D.'s NPI number?
Michael Diaz, M.D.'s National Provider Identifier (NPI) is 1730229584, issued on Feb 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Diaz, M.D. located?
The NPPES record lists a practice address at 1112 Park Ave, New York, NY, 10128. Phone: (212) 876-4500. Providers update this record themselves, so call before visiting.
How can I verify Michael Diaz, M.D.'s license?
NPPES lists New York license number 114488, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Diaz, M.D. prescribe under Medicare Part D?
In 2024, Michael Diaz, M.D. had 2,736 Medicare Part D claims for 195 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.