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DR. LEONARD STERN M.D.
NPI 1124190228
Internal Medicine - Nephrology in New York, NY

Active since November 14, 2006Opted out of Medicare · through Jul 1, 2028
903 PARK AVE FL 1, NEW YORK, NY 10075(212) 249-8535(877) 526-2985 Get Directions Write a Review

NPPES record last updated: March 24, 2025. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Mar 24, 2025, Aug 9, 2024 (2 updates tracked since 2024).

About Dr. Leonard Stern M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LEONARD STERN M.D. (NPI 1124190228) is an individual nephrology provider in New York, New York, licensed in New York (129163) and active in the NPI registry since November 2006. He has opted out of Medicare through July 1, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1124190228
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. LEONARD STERNCredential: M.D.
Location Address903 PARK AVE FL 1New York, NY 10075-0362
Mailing Address101 W End Ave Apt 6sNew York, NY 10023-6358 · (917) 337-2038 · Fax (212) 781-7052
Phone(212) 249-8535
Fax(877) 526-2985
Sole ProprietorYes
Enumeration DateNovember 14, 2006
Last NPPES UpdateMarch 24, 20252 updates tracked since enumeration
NPPES CertifiedMarch 24, 2025
✔ NPI 1124190228 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in NY · 129163
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
903 PARK AVE FL 1, New York, NY 10075
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Leonard Stern M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from July 1, 2016 through July 1, 2028.

Opt-Out Effective DateJuly 1, 2016
Opt-Out In Effect ThroughJuly 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10075 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
2 suppliers11 claims46 services$5.74 avg. paid by Medicare
Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers13 claims585 services$0.30 avg. paid by Medicare
Sirolimus, oral, 1 mg J7520
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier11 claims330 services$2.72 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers12 claims12 services$169.80 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
3 suppliers19 claims19 services$18.89 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. HOWARD A KIERNAN JR. MD
Orthopaedic Surgery
903 PARK AVE FL 1
NEW YORK, NY 10075
New York County (212) 602-1800
HOWARD A KIERNAN MD PC
Specialist
903 PARK AVE FL 1
NEW YORK, NY 10075
New York County (212) 602-1800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leonard Stern's NPI number?

The NPI number for Leonard Stern is 1124190228. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is Leonard Stern located?

Leonard Stern practices at 903 Park Ave Fl 1, New York, NY 10075. The listed phone number is (212) 249-8535.

What is Leonard Stern's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Leonard Stern enrolled in Medicare?

No. Leonard Stern has opted out of Medicare through July 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Leonard Stern was last updated on March 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.