NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1326140674 MD
Verify on CMS → Francis Chan, MD
Gastroenterology Physician in Hamden, 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 17,061 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
1K
Medicare Part D claims · 354 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.7/100
▲ 7 pts above national avg 83.5 · Exceptional
Industry payments
$859.15
43 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Francis Chan, MD reported a CMS MIPS final score of 90.7/100 - above the 83.5 national average - and filed 1,164 Medicare Part D claims in 2024.
- 90.7/100
- MIPS score · +7 vs avg
- 1K
- 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 Francis Chan, MD
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 1326140674), first enumerated 09/05/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,164 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 90.7/100 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.
- Reported
Hospital affiliations
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$859.15 in reported industry payments (43 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1326140674 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-ABOVE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1326140674
- ENUM-LEGACY 2006
- TAX-MID 17K Gastroenterology Physician
- MIPS-ABOVE 90.7/100
- RX-MID 1,164
- BOOK-THIN 280 in Connecticut
- PHOTO-FINISH David Siegel · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Chan · this prov…
Chan · this provider
90.7 MIPS pts
- Latha Alaparthi …
Latha Alaparthi
90.7 MIPS pts
- Philip Ginsburg …
Philip Ginsburg
90.7 MIPS pts
- David Siegel · n…
David Siegel
90.7 MIPS pts
- William Case · h…
William Case
90.8 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Francis Chan, MD'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.
91 ≥ 58th percentile 58% of 454,083 measured providers are in lower value bands
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 Francis Chan, MD sits
This provider among gastroenterology physician peers
Across the 5,560 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Francis Chan, MD writes more Part D claims than 70% of them and scores higher on MIPS quality than 63% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Francis Chan, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Francis Chan, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 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 Francis Chan, MD?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
1,164 37% vs specialty avg
MIPS final score
90.7/100 7.2 pts vs avg
Specialty distribution in Connecticut
How Gastroenterology Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Francis Chan, MD's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 90.7/100
- vs 83.5 national avg · 2023 performance year
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
Provider Details
| NPI | 1326140674 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/05/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
90.7483
Final Score
Measured-score avg: 83.5
82.2742
Quality
58.9275
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Francis Chan, MD 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.
According to CMS billing records, Francis Chan, MD is affiliated with 3 Medicare-billing facilities.
Hhc Physician Services PLLC
Hamden, CT
Northeast Medical Group Inc
New Haven, CT
Rehabilitation Associates Inc
Fairfield, 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 Francis Chan, MD. Source: openpaymentsdata.cms.gov.
Total received
$859
Largest payer
ABBVIE INC.
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.
Brand vs generic prescribing mix · Typical
Francis Chan, MD - brand share 22.0%
Gastroenterology Physician average
22% brand-name claims vs 78% generic, on 1,164 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.
1,164
Total Claims
$317K
Total Drug Cost
354
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,364.667
- Total Day Supply
- 66,768
- Brand vs Generic
- 22% brand / 78% generic
- Brand Drug Cost
- $287K
- Generic Drug Cost
- $30K
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 30, 65-74: 168, 75-84: 137, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Francis Chan, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Omeprazole
Omeprazole
292 claims
- Pantoprazole Sodium
Pantoprazole Sodium
173 claims
- Famotidine 94
Famotidine
94 claims
- Clenpiq 82
Clenpiq
82 claims
- Linzess 48
Linzess
48 claims
- Esomeprazole Magne… 41
Esomeprazole Magnesium
41 claims
- Lansoprazole 35
Lansoprazole
35 claims
- Ursodiol 29
Ursodiol
29 claims
| Drug | Claims |
|---|---|
| Omeprazole | 292 |
| Pantoprazole Sodium | 173 |
| Famotidine | 94 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 82 |
| Linzess Linaclotide | 48 |
| Esomeprazole Magnesium | 41 |
| Lansoprazole | 35 |
| Ursodiol | 29 |
| Metoclopramide Hcl | 24 |
| Ondansetron Hcl | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Francis Chan, MD fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Francis Chan, MD's 1,164 claims are above the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chan, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (90.7 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Chan.
One of 280 Gastroenterology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Abera Abay
M.D.
Norwich, CT
Dr. Clara Abraham
MD
New Haven, CT
Dr. Charles Adelmann
M.D.
Norwalk, CT
Dr. Anant Agarwalla
M.D.
Wallingford, CT
Dr. Badr Al Bawardy
MD
New Haven, CT
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Francis Chan, MD's specialty? ▼
Francis Chan, MD specializes in Gastroenterology Physician and practices in Hamden, Connecticut. Credentials: MD.
How much does Francis Chan, MD prescribe under Medicare Part D? ▼
In 2024, Francis Chan, MD wrote 1,164 Medicare Part D claims totaling $317K in drug costs for 354 beneficiaries.
What is Francis Chan, MD's Medicare quality score? ▼
Francis Chan, MD has a CMS MIPS Final Score of 90.7/100 (Quality: 82.3, Cost: 58.9). 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 Francis Chan, MD located? ▼
Francis Chan, MD is located at 2200 WHITNEY AVE, Hamden, CT, 06518. Phone: (203) 281-4463.
What is Francis Chan, MD's NPI number? ▼
Francis Chan, MD's National Provider Identifier (NPI) is 1326140674, issued on 09/05/2006.
Does Francis Chan, MD prescribe more brand-name or generic drugs? ▼
Francis Chan, MD's prescribing is 22% brand-name and 78% generic drugs by claim count, with $287K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Francis Chan, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Francis Chan, MD's most frequently prescribed drugs include Omeprazole, Pantoprazole Sodium, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Francis Chan, MD accept Medicare? ▼
Francis Chan, MD appears in CMS Medicare data with 1,164 Part D claims and 354 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Francis Chan, MD's credentials? ▼
Francis Chan, MD's NPI is 1326140674 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
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
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.