2026 NPPES data Hematology & Oncology Physician NPI 1376529586 MD
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STUART FELDMAN, MD

Hematology & Oncology Physician in WHITE PLAINS, New York. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
761
Medicare Part D claims · 201 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

STUART FELDMAN, MD filed 761 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in WHITE PLAINS, New York, prescribing 70% generic.

761
Part D claims, 2023
70%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

STUART FELDMAN, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

761 Top 29% higher than 71% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

STUART FELDMAN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about STUART FELDMAN, MD?

Quality data not reported

NPI registry status

Active

Issued 12/20/2005

NPI 1376529586

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

761 10% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in New York

How Hematology & Oncology Physician compares to other specialties among New York providers

New York providers

Hematology & Oncology Physician share within New York

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Hematology & Oncology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hematology & Oncology Physician ABMS/AOA estimate

Est. board-certified rate (Hematology & Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hematology & Oncology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

STUART FELDMAN, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 210 WESTCHESTER AVE, WHITE PLAINS, NY, 10604, with a listed phone of (914) 681-5200. NPI 1376529586 was issued on 12/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FELDMAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 761 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $2.1 million in drug spend, split 30% brand-name and 70% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

210 WESTCHESTER AVE
WHITE PLAINS, NY 10604

Provider Details

NPI 1376529586
Specialty Hematology & Oncology Physician
Credentials MD
Gender Male
NPI Issued 12/20/2005

License & disciplinary context — New York NYSBPMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 — they are NOT specific to STUART FELDMAN, MD. To verify STUART FELDMAN, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

STUART FELDMAN, MD — brand share 30.0%
Specialty average (est.)

30% brand-name claims vs 70% generic, on 761 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

761
Total Claims
$2.1M
Total Drug Cost
201
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,773
Total Day Supply
51,769
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$1.8M
Generic Drug Cost
$265K

Patient Demographics

Average Patient Age
76.6 years
Avg HCC Risk Score
1.62
Gender Split
80% female / 20% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What STUART FELDMAN, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Anastrozole
232
Eliquis
Apixaban
85
Letrozole
82
Hydroxyurea
46
Xarelto
Rivaroxaban
46
Tamoxifen Citrate
33
Ondansetron Hcl
28
Lenalidomide
22
Prednisone
19
Calquence
Acalabrutinib Maleate
17

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology & Oncology Physician Overview

How STUART FELDMAN, MD fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

STUART FELDMAN, MD's 761 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as FELDMAN.

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STUART FELDMAN, MD's specialty?
STUART FELDMAN, MD specializes in Hematology & Oncology Physician and practices in WHITE PLAINS, New York. Credentials: MD.
How much does STUART FELDMAN, MD prescribe under Medicare Part D?
In 2023, STUART FELDMAN, MD wrote 761 Medicare Part D claims totaling $2.1M in drug costs for 201 beneficiaries.
Where is STUART FELDMAN, MD located?
STUART FELDMAN, MD is located at 210 WESTCHESTER AVE, WHITE PLAINS, NY, 10604. Phone: (914) 681-5200.
What is STUART FELDMAN, MD's NPI number?
STUART FELDMAN, MD's National Provider Identifier (NPI) is 1376529586, issued on 12/20/2005.
Does STUART FELDMAN, MD prescribe more brand-name or generic drugs?
STUART FELDMAN, MD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $1.8M in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does STUART FELDMAN, MD prescribe most often?
Based on 2023 Medicare Part D data, STUART FELDMAN, MD's most frequently prescribed drugs include Anastrozole, Eliquis, Letrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STUART FELDMAN, MD accept Medicare?
STUART FELDMAN, MD appears in CMS Medicare data with 761 Part D claims and 201 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STUART FELDMAN, MD's credentials?
STUART FELDMAN, MD's NPI is 1376529586 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology