Quick answers
- Does Wai Ying Chan accept Medicare assignment?
- Yes. Medicare's clinician data says Wai Ying 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 Wai Ying Chan see?
- In 2024, CMS data shows 46 Original Medicare patients and 688 services for Wai Ying Chan. This counts Original Medicare only and measures volume, not quality.
- What is Wai Ying Chan's NPI number?
- 1144066648. 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 Wai Ying 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 | 46 |
|---|---|
| Services billed to Medicare | 688 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 83 |
Most frequent services
- Psychotherapy with evaluation and management visit, 45 minutes (90836)319 services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)287 services
- Psychotherapy with evaluation and management visit, 1 hour (90838)23 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).
- Anxiety75%
- High blood pressure74%
- Depression72%
- High cholesterol67%
- Arthritis61%
- Alzheimer's disease or dementia61%
Practice locations
Addresses where Wai Ying Chan is enrolled with Medicare (CMS data updated October 2, 2026).
- 274 Madison Ave, Rm 1501New York, NY 10016 (212) 203‑1773
- 310 W 72nd St, 1fNew York, NY 10023 (201) 568‑8288
- 350 E Ave, Suite 203Rochester, NY 14604 (212) 203‑1773
Group practices
Medicare enrollment lists Wai Ying Chan as a member of these groups (CMS data updated October 2, 2026).
- Rivia Medical PLLC67 clinicians in the group
- Jay Lawrence Friedman MD LLC8 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Rivia Medical PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | State University Of New York At Stony Brook, School Of Medicine |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144066648 |
| 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
- 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