Quick answers
- Does Crystal H. McMahan accept Medicare assignment?
- Yes. Medicare's clinician data says Crystal H. McMahan 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 Crystal H. McMahan see?
- In 2024, CMS data shows 317 Original Medicare patients and 3,046 services for Crystal H. McMahan. This counts Original Medicare only and measures volume, not quality.
- What is Crystal H. McMahan's NPI number?
- 1396969200. 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 Crystal H. McMahan, 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 | 3,046 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)651 services
- Calculation of radiation therapy dose (77300)536 services
- Design and construction of complex radiation treatment device (77334)325 services
- Radiation treatment management, 5 treatment sessions (77427)296 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)144 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)75%
- Arthritis58%
- Ischemic heart disease39%
- COPD33%
Hospitals where Crystal H. McMahan works
Medicare's Facility Affiliation Data lists Crystal H. McMahan 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.
- Baptist Health HardinElizabethtown, KY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 180012
- Baptist Health La GrangeLa Grange, KY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 180138
- Baptist Health LouisvilleLouisville, KY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 180130
- Norton Hospitals, IncLouisville, KY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 180088
Practice locations
Addresses where Crystal H. McMahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 4003 Kresge Way, Suite 115Louisville, KY 40207 (502) 897‑8163
Group practices
Medicare enrollment lists Crystal H. McMahan as a member of this group (CMS data updated October 2, 2026).
- Baptist Health Medical Group Inc2,472 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Louisville
Clinicians with the same Medicare primary specialty in Louisville, KY — not a recommendation.
Other clinicians in Baptist Health Medical Group Inc
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 | 2006 (20 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396969200 |
| 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