Quick answers
- Does Yong H. Hahn accept Medicare assignment?
- Yes. Medicare's clinician data says Yong H. Hahn 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 Yong H. Hahn see?
- In 2024, CMS data shows 1,147 Original Medicare patients and 5,255 services for Yong H. Hahn. This counts Original Medicare only and measures volume, not quality.
- What is Yong H. Hahn's NPI number?
- 1841253606. 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 Yong H. Hahn, 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 | 1,147 |
|---|---|
| Services billed to Medicare | 5,255 |
| Different services or procedures | 80 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)2,911 services
- Ct scan of chest without contrast (71250)261 services
- X-ray of chest, 1 view (71045)159 services
- Ct scan of abdomen and pelvis with contrast (74177)128 services
- Mri scan of abdomen before and after contrast (74183)102 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%
- Arthritis58%
- Diabetes55%
- Ischemic heart disease46%
- Chronic kidney disease32%
Practice locations
Addresses where Yong H. Hahn is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 10837 71st Ave, Suite 2Forest Hills, NY 11375 (631) 751‑3000
- 1500 Route 112, Bldg 2Port Jefferson Station, NY 11776 (631) 751‑3000
- 21 Evergreen CirManhasset, NY 11030 (718) 428‑1500
- 211 Midland AveRye, NY 10580
- 3225 Francis Lewis BlvdFlushing, NY 11358 (718) 428‑1500
Group practices
Medicare enrollment lists Yong H. Hahn as a member of these groups (CMS data updated October 2, 2026).
- North Shore Hematology Oncology Associates PC479 clinicians in the group
- Main Street Radiology at Bayside LLC56 clinicians in the group
- Radiology Associates of Main Street PC52 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Forest Hills
Clinicians with the same Medicare primary specialty in Forest Hills, NY — not a recommendation.
Other clinicians in North Shore Hematology Oncology Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers R W Johnson Medical School (cam/new Bruns/pisc) |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841253606 |
| 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