Quick answers
- Does Chanh Huynh accept Medicare assignment?
- Yes. Medicare's clinician data says Chanh Huynh 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 Chanh Huynh see?
- In 2024, CMS data shows 852 Original Medicare patients and 122,857 services for Chanh Huynh. This counts Original Medicare only and measures volume, not quality.
- What is Chanh Huynh's NPI number?
- 1134324536. 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 Chanh Huynh, 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 | 852 |
|---|---|
| Services billed to Medicare | 122,857 |
| Different services or procedures | 153 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)20,820 services
- Injection, pembrolizumab, 1 mg (J9271)11,400 services
- Injection, daratumumab, 10 mg and hyaluronidase-fihj (J9144)9,360 services
- Injection, azacitidine, 1 mg (J9025)8,300 services
- Injection, nivolumab, 1 mg (J9299)6,840 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 blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)52%
- Arthritis47%
- Chronic kidney disease42%
- Ischemic heart disease41%
Hospitals where Chanh Huynh works
Medicare's Facility Affiliation Data lists Chanh Huynh 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.
- Gettysburg HospitalGettysburg, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390065
- WellSpan York HospitalYork, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390046
Practice locations
Addresses where Chanh Huynh is enrolled with Medicare (CMS data updated October 2, 2026).
- 1001 S George StYork, PA 17403
- 1001 S George St 2nd Floor, Wellspan Pulmonary and Sleep MedicineYork, PA 17403 (717) 851‑2465
- 25 Monument RdYork, PA 17403
- 25 Monument Rd, Suite 294York, PA 17403 (717) 741‑9229
Group practices
Medicare enrollment lists Chanh Huynh as a member of these groups (CMS data updated October 2, 2026).
- WellSpan Medical Group2,480 clinicians in the group
- Cancer Care Associates of York, Inc.15 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in York
Clinicians with the same Medicare primary specialty in York, PA — not a recommendation.
Other clinicians in WellSpan Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1134324536 |
| 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