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2026 NPPES data Internal Medicine Physician NPI 1902867955 M.D.
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Warren Geisler, M.D.

Internal Medicine Physician in Bronx, New York.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
8K
Medicare Part D claims · 577 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.8/100
▲ 15 pts above national avg 83.5 · Exceptional
Industry payments
$425.29
20 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Warren Geisler, M.D. reported a CMS MIPS final score of 98.8/100 - above the 83.5 national average - and filed 7,653 Medicare Part D claims in 2024.

98.8/100
MIPS score · +15 vs avg
8K
Part D claims, 2024
85%
generic prescribing
Likely
board-certified (heuristic)

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.

Federal trust snapshot

What official records show about Warren Geisler, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1902867955), first enumerated 03/30/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 7,653 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 98.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Industry payment transparency

    $425.29 in reported industry payments (20 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • State context

    State board disciplinary context

    New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Warren Geisler, M.D.'s individual license status. Verify directly with the state medical board.

    Source: NYSBPMC annual report 2023

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

Compare Geisler with other Internal Medicine Physician providers

Same primary specialty, same federal CMS NPPES roster.

All 970 Internal Medicine Physician providers in Bronx, NY →

Also enrolled in New York

Other specialties in Bronx: Student in an Organized Health Care Education/Training Program (4,582) · Registered Nurse (2,021) · Social Worker (1,974) · Licensed Practical Nurse (1,828)

CMS NPPES provider registry desk

NPI 1902867955 · Internal Medicine Physician

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ELITE · RX-MID · BOOK-MID · PHOTO-FINISH

  • NPI-10 1902867955
  • ENUM-LEGACY 2006
  • TAX-MEGA 175K Internal Medicine
  • MIPS-ELITE 98.8/100
  • RX-MID 7,653
  • BOOK-MID 13,725 in New York
  • PHOTO-FINISH Nicole Hunt, MBBS, MD · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Warren Geisler, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

99 ≥ 89th percentile 89% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Warren Geisler, M.D. sits

This provider among internal medicine physician peers

Across the 34,612 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Warren Geisler, M.D. writes more Part D claims than 89% of them and scores higher on MIPS quality than 91% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 33Warren Geisler, M.D., Part D claim volume, percentile in specialty: 89 · MIPS quality, percentile: 91
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Warren Geisler, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Warren Geisler, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Warren Geisler, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 03/30/2006

NPI 1902867955

Primary specialty

Internal Medicine Physician

High-volume

174,792 US NPIs in this specialty

Medicare Part D claims

7,653 175% vs specialty avg

2024 prescription claims

Specialty avg: 2,785

MIPS final score

98.8/100 15.3 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in New York

How Internal Medicine Physician compares to other specialties among New York providers

New York providers
Student in an Organized Heal…8%Registered Nurse5.2%Clinical Social Worker4.9%Social Worker4.5%Speech-Language Pathologist4.5%Licensed Practical Nurse4.3%Internal Medicine Physician2.5%
Largest specialties in New York (% of in-state providers)

Medicare quality performance, MIPS

Warren Geisler, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
98.8/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%98.8%
MIPS final score (Internal Medicine Physician) - 98.8/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

1578 WILLIAMSBRIDGE RD
Bronx, NY 10461
(718) 863-8465

Provider Details

NPI 1902867955
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 03/30/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

98.8187
Final Score
Measured-score avg: 83.5
80.6374
Quality
95
Promoting Interoperability

Reporting: Alternative Payment Model

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Warren Geisler, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$425

Largest payer

Abbott Laboratories

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 Warren Geisler, M.D.. To verify Warren Geisler, M.D.'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 · Typical

Warren Geisler, M.D. - brand share 14.0%
Internal Medicine Physician average

14% brand-name claims vs 85% generic, on 7,653 2024 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 2024.

7,653
Total Claims
$912K
Total Drug Cost
577
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16,788.767
Total Day Supply
493,254
Brand vs Generic
14% brand / 85% generic
Brand Drug Cost
$782K
Generic Drug Cost
$122K
Opioid Claims
396 (5.2% rate)
Antibiotic Claims
246

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
1.10
Gender Split
59% female / 41% male
Age Distribution
<65: 35, 65-74: 241, 75-84: 216, 85+: 85

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Warren Geisler, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Atorvastatin Calcium
 524
Losartan Potassium
 302
Amlodipine Besylate
 282
Metformin Hcl
 254
Hydrochlorothiazide
 252
Simvastatin
 205
Levothyroxine Sodium
 195
Omeprazole
 192
Furosemide
 174
Albuterol Sulfate Hfa
Albuterol Sulfate
169

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

More Internal Medicine Physician in NY → All providers in New York → Compare specialties →

Internal Medicine Physician Overview

How Warren Geisler, M.D. fits within the Internal Medicine Physician landscape nationally.

174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider

Warren Geisler, M.D.'s 7,653 claims are above the specialty average of 2,785.

Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Geisler, both outside New York so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (98.8 here).

Kolawole Odulaja 98.8 TX Nicole Hunt 98.8 TX Niusha Damaghi 98.8 CA Rachel Madrid 98.8 CT

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Alex Messina Santa Monica, CA Lucia Martinez-Bejar Jacksonville, FL Jeffrey Roth Long Beach, CA Paul Shattuck Madison, WI

Nearby Internal Medicine Physician Providers in New York

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

One of 13,725 Internal Medicine Physician providers enrolled in New York, 11 are shown on this page.

Dr. Theophine Abakporo
M.D.
Brooklyn, NY
Dr. Antonieta Abarientos
MD
New Rochelle, NY
Dr. Charles Abate
MD
Ossining, NY
Dr. Vyachislav Abayev
M.D.
Brooklyn, NY
Dr. Zurab Abayev
M.D.
Brooklyn, NY

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Warren Geisler, M.D.'s specialty? ▼
Warren Geisler, M.D. specializes in Internal Medicine Physician and practices in Bronx, New York. Credentials: M.D..
How much does Warren Geisler, M.D. prescribe under Medicare Part D? ▼
In 2024, Warren Geisler, M.D. wrote 7,653 Medicare Part D claims totaling $912K in drug costs for 577 beneficiaries.
What is Warren Geisler, M.D.'s Medicare quality score? ▼
Warren Geisler, M.D. has a CMS MIPS Final Score of 98.8/100 (Quality: 80.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Warren Geisler, M.D. located? ▼
Warren Geisler, M.D. is located at 1578 WILLIAMSBRIDGE RD, Bronx, NY, 10461. Phone: (718) 863-8465.
What is Warren Geisler, M.D.'s NPI number? ▼
Warren Geisler, M.D.'s National Provider Identifier (NPI) is 1902867955, issued on 03/30/2006.
Does Warren Geisler, M.D. prescribe more brand-name or generic drugs? ▼
Warren Geisler, M.D.'s prescribing is 14% brand-name and 85% generic drugs by claim count, with $782K in brand drug costs.
Does Warren Geisler, M.D. prescribe opioids? ▼
Yes, Warren Geisler, M.D. had 396 opioid claims in 2024 with an opioid prescribing rate of 5.2%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Warren Geisler, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Warren Geisler, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Warren Geisler, M.D. accept Medicare? ▼
Warren Geisler, M.D. appears in CMS Medicare data with 7,653 Part D claims and 577 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Warren Geisler, M.D.'s credentials? ▼
Warren Geisler, M.D.'s NPI is 1902867955 with credentials M.D.. 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

View source datasets and methodology notes
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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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 August 2026 (NPPES) / 2024 (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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.