Marshall Diamond, DMD
Dentist · Commack, NY
Marshall Diamond, DMD is a dentist with a practice address in Commack, New York, and NPI 1689894651, issued on May 1, 2007. Check the license (New York NY029962, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marshall Diamond
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- NY029962 NY
Self-reported in NPPES; status is on the state search - Practice location
- 777 Larkfield Road, Commack, NY 11725
- Phone
- (631) 462-5780
- Enumerated
- May 1, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 5,918 in New York → Look up another NPI →
Verify Marshall Diamond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license NY029962Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average dentist in 2024
137 Medicare Part D claims for 110 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Clindamycin Hcl133 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.
Marshall Diamond among 5,918 dentist records in New York
Marshall Diamond, DMD is one of 5,918 dentist records with a practice address in New York. 58% 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 26% of them.
- NPI issued2007 · 26% of these records are older, 51% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 dentist records list a practice address in Commack
They are 14 of the 1,341 NPPES records with a practice address in Commack, and 5,918 dentist records in New York.
All 5,918 in New York → Every provider in Commack → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Maryanne Carletto, DDSCommack, NY 117251700104486
- Deborah Gazzillo, D.D.S.Commack, NY 117251316194442
- Tae Kim, D.D.S.Commack, NY 117251619293958
- Julie Kreitzberg, D.M.D.Commack, NY 117251407195662
- Dustin Kreitzberg, D.D.S.Commack, NY 117251730428905
- Glen Kreitzberg, DDSCommack, NY 117251710394101
- Robert Marcovici, D.D.S.Commack, NY 117251992934194
- Kevin Martin, DMDCommack, NY 117251487642914
Common questions
What is Marshall Diamond, DMD's NPI number?
Marshall Diamond, DMD's National Provider Identifier (NPI) is 1689894651, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Diamond, DMD located?
The NPPES record lists a practice address at 777 Larkfield Road, Commack, NY, 11725. Phone: (631) 462-5780. Providers update this record themselves, so call before visiting.
How can I verify Marshall Diamond, DMD's license?
NPPES lists New York license number NY029962, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Marshall Diamond, DMD prescribe under Medicare Part D?
In 2024, Marshall Diamond, DMD had 137 Medicare Part D claims for 110 beneficiaries; the average among dentist prescribers was 86. 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.