David Greenblatt, M.D.
Radiation Oncology Physician · Ridgewood, NJ
David Greenblatt, M.D. is a radiation oncology physician with a practice address in Ridgewood, New Jersey, and NPI 1063465490, issued on May 18, 2006. Check the license (New Jersey 25MA04850800, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- David Greenblatt
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 25MA04850800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 223 N Van Dien Ave, Ridgewood, NJ 07450
- Phone
- (201) 634-5403
- Enumerated
- May 18, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (201) 634-5765
- Medicaid IDs
- 0971804 NJ
01907657 NY - Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in New Jersey → Look up another NPI →
Also registered at 223 N Van Dien Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Greenblatt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA04850800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average radiation oncology physician in 2024
24 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of 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 Greenblatt among 153 radiation oncology physician records in New Jersey
David Greenblatt, M.D. is one of 153 radiation oncology physician records with a practice address in New Jersey. 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 18% of them.
- NPI issued2006 · 18% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2026 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in New Jersey
There are 153 radiation oncology physician records in New Jersey.
All 153 in New Jersey → Every provider in Ridgewood → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Chad Deyoung, M.D.Ridgewood, NJ 074501225063456
- Michael Wesson, M.D.Ridgewood, NJ 074501760437321
- Kenneth Blank, MDPompton Plains, NJ 074441205864964
- Adnan Danish, MDWayne, NJ 074701265440903
- Michael Pereira, MDWayne, NJ 074701578675112
- Sabin Motwani, M.D.Paterson, NJ 075031699908244
- Shaan Kataria, M.D.Totowa, NJ 075121609294156
- Nicholas Denunzio, M.D., PH.D.Hackensack, NJ 076011295154680
Common questions
What is David Greenblatt, M.D.'s NPI number?
David Greenblatt, M.D.'s National Provider Identifier (NPI) is 1063465490, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Greenblatt, M.D. located?
The NPPES record lists a practice address at 223 N Van Dien Ave, Ridgewood, NJ, 07450. Phone: (201) 634-5403. Providers update this record themselves, so call before visiting.
How can I verify David Greenblatt, M.D.'s license?
NPPES lists New Jersey license number 25MA04850800, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Greenblatt, M.D. prescribe under Medicare Part D?
In 2024, David Greenblatt, M.D. had 24 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. 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.