Quick answers
- Does Francis W. Chan accept Medicare assignment?
- Yes. Medicare's clinician data says Francis W. Chan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Francis W. Chan see?
- In 2024, CMS data shows 267 Original Medicare patients and 3,242 services for Francis W. Chan. This counts Original Medicare only and measures volume, not quality.
- What is Francis W. Chan's NPI number?
- 1326140674. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Francis W. Chan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 267 |
|---|---|
| Services billed to Medicare | 3,242 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)94 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)49 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)38 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)33 services
- Biopsy of large bowel using a flexible endoscope (45380)30 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis46%
- Anxiety32%
- Ischemic heart disease30%
- Diabetes29%
Hospitals where Francis W. Chan works
Medicare's Facility Affiliation Data lists Francis W. Chan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022
Practice locations
Addresses where Francis W. Chan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1591 Boston Post Rd, Suite 206Guilford, CT 06437 (203) 281‑4463
- 1931 Black Rock TpkeFairfield, CT 06825 (203) 384‑8681
- 2200 Whitney Ave, Suite 360Hamden, CT 06518 (203) 281‑4463
- 330 Orchard StNew Haven, CT 06511
- 95 Armory RdStratford, CT 06614 (203) 384‑3388
Group practices
Medicare enrollment lists Francis W. Chan as a member of these groups (CMS data updated October 2, 2026).
- Northeast Medical Group Inc1,360 clinicians in the group
- Rehabilitation Associates Inc529 clinicians in the group
- HHC Physician Services PLLC132 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Guilford
Clinicians with the same Medicare primary specialty in Guilford, CT — not a recommendation.
Other clinicians in Northeast Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326140674 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians