Charles Willis, MD
NPI 1336142983 · Pain Medicine Physician · Desoto, TX
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Willis, MD is a Pain Medicine Physician provider in Desoto, TX (NPI 1336142983).
Provider details
- NPI number
- 1336142983
- Entity type
- Individual
- Primary specialty
- Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- J0365 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
120 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 | 92 | $90 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 28 | $126 |
Typical Medicare-allowed amounts for these services range $90–$126 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 176 | 20 |
| Tramadol Hcl | 99 | 18 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 80 | 11 |
| Gabapentin | 71 | 16 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 42 | — |
| Cyclobenzaprine Hcl | 39 | — |
Practice location
Mailing address
Additional practice locations (1)
- 15355 Vantage Pkwy W Ste 330Houston, TX 77032-1975Phone: (214) 623-0550
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2026-01-27
- Certified
- 2026-01-27
Frequently asked questions
- What is Charles Willis's NPI number?
- Charles Willis's National Provider Identifier (NPI) is 1336142983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Willis's specialty?
- Charles Willis is listed in the NPPES registry with a primary specialty of Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Willis located?
- Charles Willis's practice location on file with NPPES is 911 York Dr Ste 205, Desoto, TX 75115-2064.
- What is Charles Willis's phone number?
- The practice phone number listed in the NPPES registry for Charles Willis is (214) 623-0550.
- Does Charles Willis accept Medicare?
- Charles Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Willis's NPI active?
- Yes — Charles Willis's NPI (1336142983) is active in the NPPES registry as of the last update on 2026-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.