2026 NPPES data Gastroenterology Physician NPI 1003310434
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Cheng-Hung Tai

Gastroenterology Physician in Greenwich, Connecticut. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 in Gastroenterology 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
28
Medicare Part D claims · 12 beneficiaries · Gastroenterology Physician avg: 833
MIPS score
93.3/100
▲ 10 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Cheng-Hung Tai reported a CMS MIPS final score of 93.3/100 - above the 83.1 national average - and filed 28 Medicare Part D claims in 2023.

93.3/100
MIPS score · +10 vs avg
28
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.

Cheng-Hung Tai's MIPS score vs every scored U.S. clinician

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

93 Top 29% higher than 71% 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+: 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

Where Cheng-Hung Tai sits

This provider among gastroenterology physician peers

Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Cheng-Hung Tai writes more Part D claims than 2% of them and scores higher on MIPS quality than 74% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 17Cheng-Hung Tai-Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 74
Part D claim volume vs MIPS quality, by specialty percentile

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

Board certification likely (heuristic, not verified)

Cheng-Hung Tai practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Cheng-Hung Tai?

High performer (top quartile)

NPI registry status

Active

Issued 03/21/2018

NPI 1003310434

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

28 97% vs specialty avg

2023 prescription claims

Specialty avg: 833

MIPS final score

93.3/100 10.2 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Connecticut

How Gastroenterology Physician compares to other specialties among Connecticut providers

Connecticut providers
Clinical Social Worker - 8.4%Clinical Social Worker8.4%Student in an Organized Health Care Education/Training Program - 7.7%Student in an Organized Health Care Education/Training Program7.7%Physical Therapist - 4.2%Physical Therapist4.2%Pharmacist - 3.9%Pharmacist3.9%Internal Medicine Physician - 3.4%Internal Medicine Physician3.4%Mental Health Counselor - 3.2%Mental Health Counselor3.2%Gastroenterology Physician - 0.3%Gastroenterology Physician0.3%
Largest specialties in Connecticut (% of in-state providers)

Medicare quality performance, MIPS

Cheng-Hung Tai's 2023 MIPS final score plotted against the Gastroenterology Physician national average

High performer (top quartile)
MIPS Final Score
93.3/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Gastroenterology Physician) - 93.3/100 vs national avg 83.1

0%100%National avg83%93.3%
MIPS final score (Gastroenterology Physician) - 93.3/100 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).

Cheng-Hung Tai appears in the CMS NPPES registry as a Gastroenterology Physician provider at 15 VALLEY DR FL 3, Greenwich, CT, 06831, with a listed phone of (917) 497-7661. NPI 1003310434 was issued on 03/21/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Tai 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 28 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $8K 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 93.3/100 for the 2023 performance year (Quality 81.7), compared with the national average of 83.1.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

15 VALLEY DR FL 3
Greenwich, CT 06831

Provider Details

NPI 1003310434
Specialty Gastroenterology Physician
Gender Male
NPI Issued 03/21/2018

CMS Quality Score (MIPS)

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

93.2757
Final Score
Avg: 83.1
81.7219
Quality
78.0315
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Cheng-Hung Tai 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.

Connecticut GI PLLC
Wallingford, CT
Northeast Medical Group Inc
Bridgeport, 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).

Medicare Part D Prescribing Data

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

28
Total Claims
$8K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
30
Total Day Supply
738
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
2.47

Gastroenterology Physician Overview

How Cheng-Hung Tai fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

Cheng-Hung Tai's 28 claims are below the specialty average of 833.

Nearby Gastroenterology Physician Providers in Connecticut

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Connecticut medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Cheng-Hung Tai's specialty?
Cheng-Hung Tai specializes in Gastroenterology Physician and practices in Greenwich, Connecticut.
How much does Cheng-Hung Tai prescribe under Medicare Part D?
In 2023, Cheng-Hung Tai wrote 28 Medicare Part D claims totaling $8K in drug costs for 12 beneficiaries.
What is Cheng-Hung Tai's Medicare quality score?
Cheng-Hung Tai has a CMS MIPS Final Score of 93.3/100 (Quality: 81.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Cheng-Hung Tai located?
Cheng-Hung Tai is located at 15 VALLEY DR FL 3, Greenwich, CT, 06831. Phone: (917) 497-7661.
What is Cheng-Hung Tai's NPI number?
Cheng-Hung Tai's National Provider Identifier (NPI) is 1003310434, issued on 03/21/2018.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
Does Cheng-Hung Tai accept Medicare?
Cheng-Hung Tai appears in CMS Medicare data with 28 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cheng-Hung Tai's credentials?
Cheng-Hung Tai's NPI is 1003310434. 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

Compiled from official public sources by the PlainDoctor editorial team.