Quick answers
- Does Sarah H. Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah H. Callahan 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 Sarah H. Callahan see?
- In 2024, CMS data shows 900 Original Medicare patients and 4,801 services for Sarah H. Callahan. This counts Original Medicare only and measures volume, not quality.
- What is Sarah H. Callahan's NPI number?
- 1831220557. 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 Sarah H. Callahan, 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 | 900 |
|---|---|
| Services billed to Medicare | 4,801 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,550 services
- Injection, gadobutrol, 0.1 ml (A9585)1,200 services
- Screening mammography (77067)578 services
- Screening 3d breast mammography (77063)556 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)260 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 pressure69%
- Arthritis47%
- Anxiety29%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)24%
- Diabetes23%
Practice locations
Addresses where Sarah H. Callahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1221 S BroadwayLexington, KY 40504 (859) 258‑4000
Group practices
Medicare enrollment lists Sarah H. Callahan as a member of this group (CMS data updated October 2, 2026).
- New Lexington Clinic PSC332 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Lexington
Clinicians with the same Medicare primary specialty in Lexington, KY — not a recommendation.
Other clinicians in New Lexington Clinic PSC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Louisville School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831220557 |
| 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