Quick answers
- Does William H. Ennis accept Medicare assignment?
- Yes. Medicare's clinician data says William H. Ennis 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 William H. Ennis see?
- In 2024, CMS data shows 183 Original Medicare patients and 2,013 services for William H. Ennis. This counts Original Medicare only and measures volume, not quality.
- What is William H. Ennis's NPI number?
- 1245610914. 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 William H. Ennis, 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 | 183 |
|---|---|
| Services billed to Medicare | 2,013 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)562 services
- Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)235 services
- Calculation of radiation therapy dose (77300)218 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)182 services
- Radiation treatment management, 5 treatment sessions (77427)158 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)71%
- Arthritis50%
- COPD37%
- Atrial fibrillation31%
Hospitals where William H. Ennis works
Medicare's Facility Affiliation Data lists William H. Ennis 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.
- Grandview Medical CenterBirmingham, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010104
Practice locations
Addresses where William H. Ennis is enrolled with Medicare (CMS data updated October 2, 2026).
- 3670 Grandview Pkwy, Suite 100Birmingham, AL 35243 (205) 971‑1800
Group practices
Medicare enrollment lists William H. Ennis as a member of this group (CMS data updated October 2, 2026).
- Alabama Radiation Therapy Services2 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Birmingham
Clinicians with the same Medicare primary specialty in Birmingham, AL — not a recommendation.
Other clinicians in Alabama Radiation Therapy Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245610914 |
| 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