Quick answers
- Does William B. Haynal accept Medicare assignment?
- Yes. Medicare's clinician data says William B. Haynal 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 B. Haynal see?
- In 2024, CMS data shows 466 Original Medicare patients and 809 services for William B. Haynal. This counts Original Medicare only and measures volume, not quality.
- What is William B. Haynal's NPI number?
- 1114218120. 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 B. Haynal, 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 | 466 |
|---|---|
| Services billed to Medicare | 809 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)357 services
- Sleep study including heart rate, breathing, airflow, and effort (95806)103 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)96 services
- Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)82 services
- Sleep study in sleep lab (6 years or older) (95810)62 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 pressure72%
- Arthritis51%
- Diabetes27%
- Anxiety27%
- Depression26%
Hospitals where William B. Haynal works
Medicare's Facility Affiliation Data lists William B. Haynal 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.
- Asante Ashland Community HospitalAshland, OR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 380005
- Asante Rogue Regional Medical CenterMedford, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380018
- Asante Three Rivers Medical CenterGrants Pass, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380002
Practice locations
Addresses where William B. Haynal is enrolled with Medicare (CMS data updated October 2, 2026).
- 2825 E Barnett RdMedford, OR 97504 (541) 789‑7000
- 500 SW Ramsey AveGrants Pass, OR 97527 (541) 472‑7000
- 555 Black Oak DrMedford, OR 97504
- 625 SW Ramsey Ave, Suite AGrants Pass, OR 97527 (541) 507‑2290
Group practices
Medicare enrollment lists William B. Haynal as a member of this group (CMS data updated October 2, 2026).
- Asante Physician Partners225 clinicians in the group
Specialties
- Sleep Medicineprimary
Other sleep medicine doctors in Oregon
Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.
Other clinicians in Asante Physician Partners
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114218120 |
| 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