William Thornton, MD
NPI 1336199868 · Psychiatry Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Thornton, MD is a Psychiatry Physician provider in Dallas, TX (NPI 1336199868).
Provider details
- NPI number
- 1336199868
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- H4746 (TX)
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
266 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 117 | $122 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 80 | $69 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 69 | $87 |
Typical Medicare-allowed amounts for these services range $69–$122 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 87 | 33 |
| Lorazepam | 65 | 23 |
| Clozapine | 61 | — |
| Trazodone Hcl | 53 | 18 |
| Methylphenidate Hcl | 51 | 13 |
| Sertraline Hcl | 50 | 13 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2008-05-06
Frequently asked questions
- What is William Thornton's NPI number?
- William Thornton's National Provider Identifier (NPI) is 1336199868, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Thornton's specialty?
- William Thornton is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Thornton located?
- William Thornton's practice location on file with NPPES is 5323 Harry Hines Blvd, Dallas, TX 75390-7208.
- What is William Thornton's phone number?
- The practice phone number listed in the NPPES registry for William Thornton is (214) 645-8500.
- Does William Thornton accept Medicare?
- William Thornton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Thornton's NPI active?
- Yes — William Thornton's NPI (1336199868) is active in the NPPES registry as of the last update on 2008-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.