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2026 NPPES data Nephrology Physician NPI 1982639324 M.D.
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Ron Chay, M.D.

Nephrology Physician in Staten Island, 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 10,806 in Nephrology 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
3K
Medicare Part D claims · 368 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
78%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.8/100
▼ 9 pts below national avg 83.5 · Mid-tier
Industry payments
$480.75
14 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

Ron Chay, M.D. reported a CMS MIPS final score of 74.8/100 - below the 83.5 national average - and filed 3,087 Medicare Part D claims in 2024.

74.8/100
MIPS score · -9 vs avg
3K
Part D claims, 2024
78%
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 Ron Chay, 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 1982639324), first enumerated 07/12/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 3,087 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 74.8/100 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

    $480.75 in reported industry payments (14 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 Ron Chay, 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.

CMS NPPES provider registry desk

NPI 1982639324 · Nephrology Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-BELOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1982639324
  • ENUM-LEGACY 2006
  • TAX-MID 11K Nephrology Physician
  • MIPS-BELOW 74.8/100
  • RX-MID 3,087
  • BOOK-LIGHT 852 in New York
  • PHOTO-FINISH Edward Friedland · ±0.1

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

Ron Chay, 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.

75 ≥ 13th percentile 13% 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%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. 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 Ron Chay, M.D. sits

This provider among nephrology physician peers

Across the 2,230 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ron Chay, M.D. writes more Part D claims than 89% of them and scores higher on MIPS quality than 26% - placing this provider in the high-volume, lower-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 quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 5Ron Chay, M.D., Part D claim volume, percentile in specialty: 89 · MIPS quality, percentile: 26
Part D claim volume vs MIPS quality, by specialty percentile

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

✓
Board certification likely (heuristic, not verified)

Ron Chay, 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 Ron Chay, M.D.?

Below national average

NPI registry status

Active

Issued 07/12/2006

NPI 1982639324

Primary specialty

Nephrology Physician

Mid-sized

10,806 US NPIs in this specialty

Medicare Part D claims

3,087 104% vs specialty avg

2024 prescription claims

Specialty avg: 1,511

MIPS final score

74.8/100 8.7 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in New York

How Nephrology 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%Nephrology Physician0.2%
Largest specialties in New York (% of in-state providers)

Medicare quality performance, MIPS

Ron Chay, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
74.8/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%74.8%
MIPS final score (Nephrology Physician) - 74.8/100 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

4143 RICHMOND AVE
Staten Island, NY 10312
(718) 967-0100

Provider Details

NPI 1982639324
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 07/12/2006

CMS Quality Score (MIPS)

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

74.7796
Final Score
Measured-score avg: 83.5
77.5437
Quality
53.0847
Cost
50
Promoting Interoperability

Reporting: Individual

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 Ron Chay, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$481

Largest payer

AstraZeneca Pharmaceuticals LP

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 Ron Chay, M.D.. To verify Ron Chay, 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

Ron Chay, M.D. - brand share 21.0%
Nephrology Physician average

21% brand-name claims vs 78% generic, on 3,087 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.

3,087
Total Claims
$802K
Total Drug Cost
368
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,489.433
Total Day Supply
221,599
Brand vs Generic
21% brand / 78% generic
Brand Drug Cost
$747K
Generic Drug Cost
$51K
Opioid Claims
49 (1.6% rate)
Antibiotic Claims
55

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
2.93
Gender Split
46% female / 54% male
Age Distribution
<65: 42, 65-74: 141, 75-84: 133, 85+: 52

Top Prescribed Drugs (Medicare Part D)

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

What Ron Chay, 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
Amlodipine Besylate
 152
Losartan Potassium
 147
Furosemide
 136
Farxiga
Dapagliflozin Propanediol
133
Calcitriol
 130
Jardiance
Empagliflozin
83
Mounjaro
Tirzepatide
78
Alprazolam
 77
Atorvastatin Calcium
 70
Clonidine Hcl
 67

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

More Nephrology Physician in NY → All providers in New York → Compare specialties →

Nephrology Physician Overview

How Ron Chay, M.D. fits within the Nephrology Physician landscape nationally.

10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider

Ron Chay, M.D.'s 3,087 claims are above the specialty average of 1,511.

Nationwide Nephrology Physician peers with similar MIPS or enrollment year

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (74.8 here).

Edward Friedland 74.7 FL Lee Anderson 74.6 TX George Eboh 74.6 TX Tamim Hamdi 74.6 TX

Same NPPES enumeration year (2006)

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

Mark Sarnak Boston, MA Willy Tsai Greenville, SC Paul Light Baltimore, MD Donald Steinmuller Vernon Hills, IL

Nearby Nephrology Physician Providers in New York

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

One of 852 Nephrology Physician providers enrolled in New York, 5 are shown here.

Dr. Mersema Abate
MD
East Setauket, NY
Dr. Rula Abdulrahman
M.D.
Stony Brook, NY
Dr. Matthew Abramson
M.D.
New York, NY
Dr. Niraj Acharya
MD
Brooklyn, NY
Dr. Sujatha Addagatla
M.D.
Niagara Falls, NY

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Ron Chay, M.D.'s specialty? ▼
Ron Chay, M.D. specializes in Nephrology Physician and practices in Staten Island, New York. Credentials: M.D..
How much does Ron Chay, M.D. prescribe under Medicare Part D? ▼
In 2024, Ron Chay, M.D. wrote 3,087 Medicare Part D claims totaling $802K in drug costs for 368 beneficiaries.
What is Ron Chay, M.D.'s Medicare quality score? ▼
Ron Chay, M.D. has a CMS MIPS Final Score of 74.8/100 (Quality: 77.5, Cost: 53.1). 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 Ron Chay, M.D. located? ▼
Ron Chay, M.D. is located at 4143 RICHMOND AVE, Staten Island, NY, 10312. Phone: (718) 967-0100.
What is Ron Chay, M.D.'s NPI number? ▼
Ron Chay, M.D.'s National Provider Identifier (NPI) is 1982639324, issued on 07/12/2006.
Does Ron Chay, M.D. prescribe more brand-name or generic drugs? ▼
Ron Chay, M.D.'s prescribing is 21% brand-name and 78% generic drugs by claim count, with $747K in brand drug costs.
Does Ron Chay, M.D. prescribe opioids? ▼
Yes, Ron Chay, M.D. had 49 opioid claims in 2024 with an opioid prescribing rate of 1.6%.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Ron Chay, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Ron Chay, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Losartan Potassium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ron Chay, M.D. accept Medicare? ▼
Ron Chay, M.D. appears in CMS Medicare data with 3,087 Part D claims and 368 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ron Chay, M.D.'s credentials? ▼
Ron Chay, M.D.'s NPI is 1982639324 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.