Chris Yan, MD, MPH
NPI 1578919635ActiveIndividual· Internal Medicine, Pulmonary Disease· Norwich, CT
Internal Medicine, Pulmonary Disease (MD, MPH) in Norwich, Connecticut, trained at University of Texas Medical School at San Antonio (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $604,902 for 1,009 claims, against $101,502 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 25 companies reporting payments in 2025, $1,769 in all, mostly food and beverage.
Overview
| NPI | 1578919635 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | No |
| NPI issued | May 9, 2016 |
| Last updated in NPPES | Sep 7, 2023 |
| Certified by provider | Sep 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 73826 | CT |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 73826 | CT |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 278950 | MA |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 278950 | MA |
| Internal Medicine | 207R00000X | 278950 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 358 |
|---|---|
| Services billed | 1,132 across 38 procedure codes |
| Paid by Medicare | $101,502 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,009 · 2,092 30-day fills |
|---|---|
| Patients | 334 |
| Total drug cost | $604,902 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pulmonary Physicians of Norwich PCWaterford, CT · 9 clinicians
Hospital affiliations
- Day Kimball HospitalPutnam, CT
- Lawrence & Memorial HospitalNew London, CT
- William W Backus HospitalNorwich, CT
Industry payments (Open Payments)
- 2025$1,769 · 82 payments from 25 companies
- 2024$1,915 · 80 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $330.72 | 20 |
| Verona Pharma, Inc. | $183.15 | 7 |
| Astrazeneca Pharmaceuticals LP | $138.81 | 11 |
| Insmed, Inc. | $112.53 | 5 |
| Axsome Therapeutics, Inc. | $107.41 | 4 |
What the 2025 payments were for
- Food and Beverage$1,769 · 82 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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