William Willis, MD
NPI 1033179478 · Psychiatry Physician · Fayetteville, NC
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Willis, MD is a Psychiatry Physician provider in Fayetteville, NC (NPI 1033179478).
Provider details
- NPI number
- 1033179478
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 22449 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
526 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 261 | $85 |
| Psychotherapy With Evaluation and Management Visit, 1 Hour90838 | 192 | $115 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 40 | $69 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 33 | $87 |
Typical Medicare-allowed amounts for these services range $69–$115 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lamotrigine | 70 | 15 |
| Clonazepam | 68 | — |
| Alprazolam | 68 | — |
| Bupropion Hclbrand: Bupropion Xl | 46 | — |
| Bupropion Hclbrand: Bupropion Hcl Sr | 42 | — |
| Lorazepam | 26 | — |
| Quetiapine Fumarate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-27
- Last updated
- 2012-06-06
Frequently asked questions
- What is William Willis's NPI number?
- William Willis's National Provider Identifier (NPI) is 1033179478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Willis's specialty?
- William Willis is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Willis located?
- William Willis's practice location on file with NPPES is 2850 Village Dr, Fayetteville, NC 28304-3864.
- What is William Willis's phone number?
- The practice phone number listed in the NPPES registry for William Willis is (910) 223-9801.
- Does William Willis accept Medicare?
- William Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Willis's NPI active?
- Yes — William Willis's NPI (1033179478) is active in the NPPES registry as of the last update on 2012-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.