Quick answers
- Does John K. Nia accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Nia 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 John K. Nia see?
- In 2024, CMS data shows 317 Original Medicare patients and 1,058 services for John K. Nia. This counts Original Medicare only and measures volume, not quality.
- What is John K. Nia's NPI number?
- 1396155297. 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 John K. Nia, 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 | 317 |
|---|---|
| Services billed to Medicare | 1,058 |
| Different services or procedures | 79 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)183 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)100 services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)81 services
- Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks (17313)63 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)46 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 pressure62%
- Arthritis38%
- Ischemic heart disease29%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%
- Diabetes20%
Practice locations
Addresses where John K. Nia is enrolled with Medicare (CMS data updated October 2, 2026).
- 175 Purchase StRye, NY 10580 (914) 967‑2153
- 220 Front StNew York, NY 10038 (212) 385‑3700
Group practices
Medicare enrollment lists John K. Nia as a member of these groups (CMS data updated October 2, 2026).
- Bobby Buka, M.D., P.C.138 clinicians in the group
- Ruth Kaplan Treiber MD and Eric S Treiber MD4 clinicians in the group
- Westchester Dermatology Group PLLC4 clinicians in the group
Specialties
Find other Micrographic Dermatologic Surgery (MDS) doctors in New York →
Other dermatologic surgeons in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Bobby Buka, M.D., P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396155297 |
| 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