Dr. William A. Willis, M.D.
General Practice (General Practice Physician)
Who else practices at this address →
Le Flore County is a federal mental health shortage area. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 48
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 245
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
General Practice Physician primary
OK license 12280
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mercy Hospital Fort Smith Fort Smith, AR
- Eastern Oklahoma Medical Center Poteau, OK
Medical groups
- Pro-Care Family Health of Oklahoma , LLC (5 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 245
- Services billed
- 5,015
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 1,017 | 228 |
| Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms | 682 | 105 |
| Testing for presence of drug, by chemistry analyzers | 575 | 107 |
| Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 181 | 45 |
| Smoking and tobacco use intensive counseling, 4-10 minutes | 147 | 30 |
| Injection of drug or substance under skin or into muscle | 62 | 30 |
| Insertion of needle into vein for collection of blood sample | 55 | 42 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 54 | 21 |
| Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | 53 | 12 |
| Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 47 | 38 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Poteau, OK | 1,545 |
| Oxycodone Hcl Other prescribers in Poteau, OK | 627 |
| Zolpidem Tartrate Other prescribers in Poteau, OK | 428 |
| Gabapentin Other prescribers in Poteau, OK | 414 |
| Lisinopril Other prescribers in Poteau, OK | 244 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in Poteau, OK | 215 |
| Omeprazole Other prescribers in Poteau, OK | 207 |
| Levothyroxine Sodium Other prescribers in Poteau, OK | 188 |
| Alprazolam Other prescribers in Poteau, OK | 169 |
| Tamsulosin Hcl Other prescribers in Poteau, OK | 169 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $8.92 in total to this clinician.
| Axsome Therapeutics, Inc. | $8.92 |
|---|
| Food and Beverage | $8.92 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.