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DR. LEONARD A FARBER M.D.
NPI 1639185838
Radiology - Radiation Oncology in New York, NY

Active since July 31, 2006PECOS Enrolled
21 WEST BROADWAY, NEW YORK, NY 10007(212) 300-0663(917) 210-3285 Get Directions Write a Review

NPPES record last updated: April 10, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 10, 2018, Sep 20, 2017 (2 updates tracked since 2017).

About Dr. Leonard A Farber M.d. NPPES

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

DR. LEONARD A FARBER M.D. (NPI 1639185838) is an individual radiation oncology provider in New York, New York, licensed in California (C153081) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1639185838
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameDR. LEONARD A FARBERCredential: M.D.
Location Address21 WEST BROADWAYNew York, NY 10007
Mailing AddressPo Box 512185Los Angeles, CA 90051-0185 · (626) 775-3514
Phone(212) 300-0663
Fax(917) 210-3285
Sole ProprietorYes
Enumeration DateJuly 31, 2006
Last NPPES UpdateApril 10, 20182 updates tracked since enumeration
✔ NPI 1639185838 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses✔ Licensed in CA · C153081✔ Licensed in NY · 210306
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
21 WEST BROADWAY, New York, NY 10007
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Secondary Practice Location 1

Location 121 West BroadwayNew York, NY 10007 · Phone (212) 300-0663 · Fax (917) 210-3285

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Leonard A Farber M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Leonard Farber reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Hope Medical Foundation
2,434 mi
Hematology & Oncology
1500 DUARTE RD
Duarte, CA 91010
  • Reassigned Medicare billing, California enrollment
  • 1,335 clinicians in this Medicare group
NPI 1871886366 (626) 256-4673

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10007 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
$198.19 typical visit price
range $65.69 – $198.19
Typical copayment $49.54 (range $16.42 – $49.54)
Most-billed visit code 99205
Established Patient
$81.44 typical visit price
range $21.20 – $160.66
Typical copayment $20.36 (range $5.30 – $40.16)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MARNEE SPIERER M.D.
Radiology (Radiation Oncology)
21 WEST BROADWAY
NEW YORK, NY 10007
New York County (212) 300-0663
THE FARBER CENTER FOR RADIATION ONCOLOGY
Radiology (Radiation Oncology)
21 WEST BROADWAY
NEW YORK, NY 10007
New York County (212) 300-0663

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 Farber's NPI number?

The NPI number for Leonard Farber is 1639185838. It was assigned to this individual provider in the NPPES registry on July 31, 2006.

Where is Leonard Farber located?

Leonard Farber practices at 21 West Broadway, New York, NY 10007. The listed phone number is (212) 300-0663.

What is Leonard Farber's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Leonard Farber enrolled in Medicare?

Yes. Leonard Farber is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Leonard Farber's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leonard Farber reassigns Medicare benefits to City Of Hope Medical Foundation (Duarte, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Leonard Farber's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Leonard Farber was last updated on April 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.