Alexander M. Kirschenbaum, M.D.
Specialist · New York, NY
Alexander M. Kirschenbaum, M.D. is a specialist with a practice address in New York, New York, and NPI 1184642837, issued on Jul 18, 2006. Check the license (New York 153872, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexander M. Kirschenbaum
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License numbers
- 153872 NY
1538721 NY
Self-reported in NPPES; status is on the state search - Practice location
- 229 E 79TH Street, New York, NY 10075
- Phone
- (646) 422-0926
- Enumerated
- Jul 18, 2006
- Record last updated
- Jan 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (212) 717-9503
- Entity
- Type 1 · individual
8 nearest specialist records → All 22,636 in New York → Look up another NPI →
Verify Alexander M. Kirschenbaum 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 153872Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average specialist in 2024
1,129 Medicare Part D claims for 249 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Tamsulosin Hcl409 claims
- Finasteride267 claims
- Dutasteride138 claims
- Potassium Citrate Er71 claims
- Alfuzosin Hcl Er45 claims
- Ciprofloxacin Hcl33 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 MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Alexander M. Kirschenbaum among 22,636 specialist records in New York
Alexander M. Kirschenbaum, M.D. is one of 22,636 specialist records with a practice address in New York. 6% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 92% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2011 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,896 specialist records list a practice address in New York
They are 1,896 of the 98,468 NPPES records with a practice address in New York, and 22,636 specialist records in New York.
All 22,636 in New York → Every provider in New York → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Darrick Antell, M.D.New York, NY 100751669531331
- Alfred Apon, PTNew York, NY 100751598953051
- Rachel Becker, M.D.New York, NY 100751619192960
- Peter Costantino, MDNew York, NY 100751558372904
- Lori Goffner, MDNew York, NY 100751932370566
- Glenn Jelks, M.D.New York, NY 100751043362957
- Robert Lombardo, M.D.New York, NY 100751639133382
- Robin Mauro, MSEDNew York, NY 100751306108071
Common questions
What is Alexander M. Kirschenbaum, M.D.'s NPI number?
Alexander M. Kirschenbaum, M.D.'s National Provider Identifier (NPI) is 1184642837, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alexander M. Kirschenbaum, M.D. located?
The NPPES record lists a practice address at 229 E 79TH Street, New York, NY, 10075. Phone: (646) 422-0926. Providers update this record themselves, so call before visiting.
How can I verify Alexander M. Kirschenbaum, M.D.'s license?
NPPES lists New York license number 153872, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Alexander M. Kirschenbaum, M.D. prescribe under Medicare Part D?
In 2024, Alexander M. Kirschenbaum, M.D. had 1,129 Medicare Part D claims for 249 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Alexander M. Kirschenbaum, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. 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.