Quick answers
- Does Karolyn Kerr accept Medicare assignment?
- Yes. Medicare's clinician data says Karolyn Kerr 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 Karolyn Kerr see?
- In 2024, CMS data shows 1,011 Original Medicare patients and 35,843 services for Karolyn Kerr. This counts Original Medicare only and measures volume, not quality.
- What is Karolyn Kerr's NPI number?
- 1639143324. 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 Karolyn Kerr, 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 | 1,011 |
|---|---|
| Services billed to Medicare | 35,843 |
| Different services or procedures | 26 |
| 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)32,610 services
- Nuclear medicine study from skull base to mid-thigh with ct scan (78815)830 services
- Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries (A9552)673 services
- Piflufolastat f-18, diagnostic, 1 millicurie (A9595)351 services
- Nuclear medicine study whole body with ct scan (78816)119 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%
- Arthritis48%
- Diabetes46%
- Ischemic heart disease38%
Practice locations
Addresses where Karolyn Kerr is enrolled with Medicare (CMS data updated October 2, 2026).
- 10 Taconic RdGreenwich, CT 06830 (202) 209‑3796
- 2916 Astoria BlvdAstoria, NY 11102 (718) 204‑5800
- 61 E 77th StNew York, NY 10075 (212) 772‑3111
Group practices
Medicare enrollment lists Karolyn Kerr as a member of these groups (CMS data updated October 2, 2026).
- Lenox Hill Radiology and Medical Imaging Associates PC244 clinicians in the group
- Delaware Radiology Associates PA65 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Greenwich
Clinicians with the same Medicare primary specialty in Greenwich, CT — not a recommendation.
Other clinicians in Lenox Hill Radiology and Medical Imaging Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639143324 |
| 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