Leonard Stern, M.D.
Nephrology Physician · New York, NY
Leonard Stern, M.D. is a nephrology physician with a practice address in New York, New York, and NPI 1124190228, issued on Nov 14, 2006. Check the license (New York 129163, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Leonard Stern
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 129163 NY
Self-reported in NPPES; status is on the state search - Practice location
- 903 Park Ave FL 1, New York, NY 10075
- Phone
- (212) 249-8535
- Enumerated
- Nov 14, 2006
- Record last updated
- Mar 24, 2025
- Fax
- (877) 526-2985
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,049 in New York → Look up another NPI →
Also registered at 903 Park Ave FL 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Howard Kiernan, MDOrthopaedic Surgery Physician1043318819
Verify Leonard Stern in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 129163Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average nephrology physician in 2024
1,297 Medicare Part D claims for 91 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium136 claims
- Allopurinol58 claims
- Ezetimibe54 claims
- Amlodipine Besylate34 claims
- Eplerenone32 claims
- Levothyroxine Sodium32 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.
Leonard Stern among 1,049 nephrology physician records in New York
Leonard Stern, M.D. 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 47% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2025 · 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.
All 1,049 in New York → Every provider in New York → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Valerie Barta, M.D.New York, NY 100751053675264
- Nicholas Condiles, MDNew York, NY 100751558822742
- Maria Devita, MDNew York, NY 100751184792996
- Andrew Moses, M.D.New York, NY 100751013379452
- Gary Orin, MDNew York, NY 100751053428284
- Anuj Patel, MDNew York, NY 100751013470459
- Jordan Rosenstock, MDNew York, NY 100751164522678
- Victor SosuNew York, NY 100751588423768
Common questions
What is Leonard Stern, M.D.'s NPI number?
Leonard Stern, M.D.'s National Provider Identifier (NPI) is 1124190228, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Stern, M.D. located?
The NPPES record lists a practice address at 903 Park Ave FL 1, New York, NY, 10075. Phone: (212) 249-8535. Providers update this record themselves, so call before visiting.
How can I verify Leonard Stern, M.D.'s license?
NPPES lists New York license number 129163, 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 Leonard Stern, M.D. prescribe under Medicare Part D?
In 2024, Leonard Stern, M.D. had 1,297 Medicare Part D claims for 91 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.