NPPES file of Aug 9, 2026

Alan Leon Nissenbaum, MD

Nephrology Physician · Brooklyn, NY

Alan Leon Nissenbaum, MD is a nephrology physician with a practice address in Brooklyn, New York, and NPI 1295879120, issued on Feb 16, 2007. Check the license (New York 177636, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295879120
Name
Alan Leon Nissenbaum
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
177636 NY
Self-reported in NPPES; status is on the state search
Practice location
3915 Avenue V Ste 104, Brooklyn, NY 11234
Phone
(718) 252-8440
Enumerated
Feb 16, 2007
Record last updated
Sep 1, 2022
Medicaid ID
01851147 NY
Medicare enrollment
Enrolled (PECOS I20040602000586); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Verify Alan Leon Nissenbaum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 177636
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

9% fewer Medicare Part D claims than the average nephrology physician in 2024

1,334 Medicare Part D claims for 61 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 136 claims were for opioids.

  1. Alan Nissenbaum1,334
  2. Specialty average1,465

Most prescribed

  1. Alprazolam73 claims
  2. Oxycodone-Acetaminophen64 claims
  3. Atorvastatin Calcium49 claims
  4. Amlodipine Besylate41 claims
  5. Oxycodone Hcl36 claims
  6. Calcium Acetate31 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: $684.19

8 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alan Nissenbaum$684.19
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Alan Leon Nissenbaum among 1,049 nephrology physician records in New York

Alan Leon Nissenbaum, MD is one of 1,049 nephrology physician records with a practice address in New York. 85% 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 53% of them.

  • NPI issued2007 · 53% of these records are older, 39% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated1983 · median 1999 among the 764 with a school on file
  • Record last updated2022 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in New York

There are 1,049 nephrology physician records in New York.

The 8 nephrology physician records with the nearest ZIP codes

  1. Serge Balmir, D.O.Brooklyn, NY 112341841414216
  2. Jamil IbrahimBrooklyn, NY 112341306267745
  3. Eliezer Parnes, M.D.Brooklyn, NY 112341578564274
  4. Henry Paul, M.D.Brooklyn, NY 112341477507341
  5. Suzannah Berlyne, M.D.Brooklyn, NY 112351164599122
  6. Sakil Bhuiyan, MDBrooklyn, NY 112331619473915
  7. Adel El-Hennawy, M.D.Brooklyn, NY 112351861403180
  8. Elena FrolovaBrooklyn, NY 112351902998586

Common questions

What is Alan Leon Nissenbaum, MD's NPI number?

Alan Leon Nissenbaum, MD's National Provider Identifier (NPI) is 1295879120, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Alan Leon Nissenbaum, MD located?

The NPPES record lists a practice address at 3915 Avenue V Ste 104, Brooklyn, NY, 11234. Phone: (718) 252-8440. Providers update this record themselves, so call before visiting.

How can I verify Alan Leon Nissenbaum, MD's license?

NPPES lists New York license number 177636, 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 Alan Leon Nissenbaum, MD prescribe under Medicare Part D?

In 2024, Alan Leon Nissenbaum, MD had 1,334 Medicare Part D claims for 61 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.