2026 NPPES data Nephrology Physician NPI 1396912598 M.D.
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PETER CHUANG, M.D.

Nephrology Physician in ORANGE, Connecticut. 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
2K
Medicare Part D claims · 324 beneficiaries · Nephrology Physician avg: 1K
MIPS score
90.7483/100
▲ 8 pts above national avg 83.1 · [object Object]
Industry payments
$33.12
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

PETER CHUANG, M.D. reported a CMS MIPS final score of 90.7483/100 — above the 83.1 national average — and filed 1,624 Medicare Part D claims in 2023.

90.7483/100
MIPS score · +8 vs avg
2K
Part D claims, 2023
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.

PETER CHUANG, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

91 Top 40% higher than 60% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

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

Board certification likely (heuristic — not verified)

PETER CHUANG, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — 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 PETER CHUANG, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/15/2008

NPI 1396912598

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

1,624 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

90.7483/100 7.648300000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Connecticut

How Nephrology Physician compares to other specialties among Connecticut providers

Connecticut providers

Nephrology Physician share within Connecticut

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within Connecticut

Medicare quality performance — MIPS

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

High performer (top quartile)
MIPS Final Score
90.7483/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 90.7483/100 vs national avg 83.1

0%100%National avg83%90.7%
MIPS final score (Nephrology Physician) — 90.7483/100 vs national avg 83.1

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).

PETER CHUANG, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 235 BOSTON POST RD STE 202, ORANGE, CT, 06477, with a listed phone of (203) 799-1252. NPI 1396912598 was issued on 05/15/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHUANG 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 1,624 prescription claims written by this provider, covering 324 Medicare beneficiaries and totaling roughly $339K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 90.7483/100 for the 2023 performance year (Quality 82.2742, Cost 58.9275), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

235 BOSTON POST RD STE 202
ORANGE, CT 06477

Provider Details

NPI 1396912598
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 05/15/2008

CMS Quality Score (MIPS)

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

90.7483
Final Score
Avg: 83.1
82.2742
Quality
58.9275
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where PETER CHUANG, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

HHC PHYSICIAN SERVICES PLLC
ORANGE, CT

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 PETER CHUANG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$33

Largest payer

AKEBIA THERAPEUTICS INC

Most common payment type

Education

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.

Medicare Part D Prescribing Data

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

1,624
Total Claims
$339K
Total Drug Cost
324
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,816
Total Day Supply
112,453
Generic Drug Cost
$54K
Antibiotic Claims
27

Patient Demographics

Average Patient Age
75.5 years
Avg HCC Risk Score
3.05
Gender Split
45% female / 55% male
Age Distribution
<65: 29, 65-74: 114, 75-84: 118, 85+: 63

Top Prescribed Drugs (Medicare Part D)

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

What PETER CHUANG, M.D. 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
Losartan Potassium
146
Amlodipine Besylate
144
Furosemide
106
Carvedilol
96
Farxiga
Dapagliflozin Propanediol
96
Hydralazine Hcl
69
Calcitriol
67
Lisinopril
57
Sevelamer Carbonate
55
Allopurinol
51

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

Nephrology Physician Overview

How PETER CHUANG, M.D. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

PETER CHUANG, M.D.'s 1,624 claims are above the specialty average of 1,454.

Nearby Nephrology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as CHUANG.

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

Frequently Asked Questions

What is PETER CHUANG, M.D.'s specialty?
PETER CHUANG, M.D. specializes in Nephrology Physician and practices in ORANGE, Connecticut. Credentials: M.D..
How much does PETER CHUANG, M.D. prescribe under Medicare Part D?
In 2023, PETER CHUANG, M.D. wrote 1,624 Medicare Part D claims totaling $339K in drug costs for 324 beneficiaries.
What is PETER CHUANG, M.D.'s Medicare quality score?
PETER CHUANG, M.D. has a CMS MIPS Final Score of 90.7483/100 (Quality: 82.2742, Cost: 58.9275). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is PETER CHUANG, M.D. located?
PETER CHUANG, M.D. is located at 235 BOSTON POST RD STE 202, ORANGE, CT, 06477. Phone: (203) 799-1252.
What is PETER CHUANG, M.D.'s NPI number?
PETER CHUANG, M.D.'s National Provider Identifier (NPI) is 1396912598, issued on 05/15/2008.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does PETER CHUANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PETER CHUANG, M.D.'s most frequently prescribed drugs include Losartan Potassium, Amlodipine Besylate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PETER CHUANG, M.D. accept Medicare?
PETER CHUANG, M.D. appears in CMS Medicare data with 1,624 Part D claims and 324 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PETER CHUANG, M.D.'s credentials?
PETER CHUANG, M.D.'s NPI is 1396912598 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

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.
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 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