William Michael Greenberg, M.D.
Psychiatry Physician · Ridgewood, NJ
William Michael Greenberg, M.D. is a psychiatry physician with a practice address in Ridgewood, New Jersey, and NPI 1316047889, issued on Sep 25, 2006. Check the license (New Jersey 25MA05202700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Michael Greenberg
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 25MA05202700 NJ
138490-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 65 North Maple Avenue, Ridgewood, NJ 07450
- Phone
- (201) 689-1001
- Enumerated
- Sep 25, 2006
- Record last updated
- Apr 27, 2023
- Fax
- (845) 262-1242
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,520 in New Jersey → Look up another NPI →
Also registered at 65 North Maple Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaclyn Ocallaghan, LCSWClinical Social Worker1588256770
Verify William Michael Greenberg 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 25MA05202700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average psychiatry physician in 2024
173 Medicare Part D claims for 20 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Olanzapine30 claims
- Escitalopram Oxalate27 claims
- Venlafaxine Hcl Er20 claims
- Caplyta17 claims
- Bupropion Hcl Sr12 claims
- Gabapentin11 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: $367.69
3 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 13,693 providers of this specialty with any payment received $4,954.93 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.
William Michael Greenberg among 1,520 psychiatry physician records in New Jersey
William Michael Greenberg, M.D. is one of 1,520 psychiatry physician records with a practice address in New Jersey. 73% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 56% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 psychiatry physician records list a practice address in Ridgewood
They are 20 of the 1,059 NPPES records with a practice address in Ridgewood, and 1,520 psychiatry physician records in New Jersey.
All 1,520 in New Jersey → Every provider in Ridgewood → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- James Cowan, M.D.Ridgewood, NJ 074501063527026
- Robert Elvove, M.D.Ridgewood, NJ 074501710033972
- Margaret Fraser, MDRidgewood, NJ 074501659443943
- Howard Gilman, M.D.Ridgewood, NJ 074501669492229
- Patricia McGuire, MDRidgewood, NJ 074501730264292
- Lisa Mellman, M.D.Ridgewood, NJ 074501629101282
- Amarjot Narula, MDRidgewood, NJ 074501396708004
- Narendra Patel, M.D.Ridgewood, NJ 074501588688501
Common questions
What is William Michael Greenberg, M.D.'s NPI number?
William Michael Greenberg, M.D.'s National Provider Identifier (NPI) is 1316047889, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Michael Greenberg, M.D. located?
The NPPES record lists a practice address at 65 North Maple Avenue, Ridgewood, NJ, 07450. Phone: (201) 689-1001. Providers update this record themselves, so call before visiting.
How can I verify William Michael Greenberg, M.D.'s license?
NPPES lists New Jersey license number 25MA05202700, 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 William Michael Greenberg, M.D. prescribe under Medicare Part D?
In 2024, William Michael Greenberg, M.D. had 173 Medicare Part D claims for 20 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.