Richard Marc Diamond, MD
Hematology & Oncology Physician · Cornwall, NY
Richard Marc Diamond, MD is a hematology & oncology physician with a practice address in Cornwall, New York, and NPI 1316053952, issued on Aug 23, 2006. Check the license (New York 136654, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Richard Marc Diamond
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 136654 NY
Self-reported in NPPES; status is on the state search - Practice location
- 164 Willow Ave, Cornwall, NY 12518
- Phone
- (845) 534-3888
- Enumerated
- Aug 23, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (845) 534-4208
- Medicaid ID
- 00913855 NY
- Medicare enrollment
- Enrolled (PECOS I20110715000502); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1977
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 164 Willow Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Darrigo, ANPNurse Practitioner1568762516
- Frances Parisi, FNPFamily Nurse Practitioner1821321019
- Philip Smith, M.D.Infectious Disease Physician1003815440
Verify Richard Marc Diamond 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 136654Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,028 Medicare Part D claims for 124 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Procrit45 claims
- Atorvastatin Calcium44 claims
- Levothyroxine Sodium43 claims
- Alprazolam42 claims
- Lisinopril38 claims
- Simvastatin38 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: $2,054.05
110 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, 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.
Richard Marc Diamond among 1,163 hematology & oncology physician records in New York
Richard Marc Diamond, MD 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 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1977 · median 2002 among the 833 with a school on file
- 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).
2 hematology & oncology physician records list a practice address in Cornwall
They are 2 of the 102 NPPES records with a practice address in Cornwall, and 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in Cornwall → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Sandeep Malik, M.D.Cornwall, NY 125181154484525
- Jason Rubin, MDFishkill, NY 125241376703090
- Saad Yousuf, M.D.Fishkill, NY 125241477814960
- Rakesh Mehta, MDCastle Point, NY 125111467402313
- Linda Demarco, M.D.Hudson, NY 125341518953231
- Duy Vu, M.D.Hudson, NY 125341366439382
- Richard Weininger, M.D.Hudson, NY 125341013244185
- Vanita Noronha, M.D.Newburgh, NY 125501609927086
Common questions
What is Richard Marc Diamond, MD's NPI number?
Richard Marc Diamond, MD's National Provider Identifier (NPI) is 1316053952, issued on Aug 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard Marc Diamond, MD located?
The NPPES record lists a practice address at 164 Willow Ave, Cornwall, NY, 12518. Phone: (845) 534-3888. Providers update this record themselves, so call before visiting.
How can I verify Richard Marc Diamond, MD's license?
NPPES lists New York license number 136654, 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 Richard Marc Diamond, MD prescribe under Medicare Part D?
In 2024, Richard Marc Diamond, MD had 1,028 Medicare Part D claims for 124 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.