Greg A. Diamond, MD
Ophthalmology Physician · Fishkill, NY
Greg A. Diamond, MD is an ophthalmology physician with a practice address in Fishkill, New York, and NPI 1801894316, issued on Jul 8, 2005. Check the license (New York 154910, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Greg A. Diamond
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 154910 NY
Self-reported in NPPES; status is on the state search - Practice location
- 200 Westage Business Ctr, Fishkill, NY 12524
- Phone
- (845) 896-9280
- Enumerated
- Jul 8, 2005
- Record last updated
- Sep 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (845) 896-0246
- Medicaid ID
- 01170438 NY
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Also registered at 200 Westage Business Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Brocks, MDOphthalmology Physician1942207980
- Ethan Gundeck, MDCardiovascular Disease Physician1003889924
- Martin Leopold, M.D.Ophthalmology Physician1215934351
- Lawrence Solomon, MD FACCCardiovascular Disease Physician1396719936
Verify Greg A. 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 154910Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average ophthalmology physician in 2024
399 Medicare Part D claims for 116 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost242 claims
- Timolol Maleate28 claims
- Brimonidine Tartrate19 claims
- Erythromycin19 claims
- Lumigan17 claims
- Restasis16 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): 73 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: $37.17
1 payment: food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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.
Greg A. Diamond among 1,822 ophthalmology physician records in New York
Greg A. Diamond, MD is one of 1,822 ophthalmology physician records with a practice address in New York. 79% 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, 84% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2015 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 ophthalmology physician records list a practice address in Fishkill
They are 9 of the 522 NPPES records with a practice address in Fishkill, and 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Fishkill → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Eric Brocks, MDFishkill, NY 125241942207980
- Donna Esposito, M.DFishkill, NY 125241912210691
- Martin Leopold, M.D.Fishkill, NY 125241215934351
- John Nichols, MDFishkill, NY 125241023108115
- Pat-Michael Palmiero, M.D.Fishkill, NY 125241639497399
- Matthew Schear, D.O.Fishkill, NY 125241417354010
- David ScheerFishkill, NY 125241801989074
- David Steinberg, M.D.Fishkill, NY 125241184652323
Common questions
What is Greg A. Diamond, MD's NPI number?
Greg A. Diamond, MD's National Provider Identifier (NPI) is 1801894316, issued on Jul 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Greg A. Diamond, MD located?
The NPPES record lists a practice address at 200 Westage Business Ctr, Fishkill, NY, 12524. Phone: (845) 896-9280. Providers update this record themselves, so call before visiting.
How can I verify Greg A. Diamond, MD's license?
NPPES lists New York license number 154910, 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 Greg A. Diamond, MD prescribe under Medicare Part D?
In 2024, Greg A. Diamond, MD had 399 Medicare Part D claims for 116 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Greg A. Diamond, MD's MIPS final score?
The 2023 MIPS final score is 73 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.