David Allan, M.D.
NPI 1033258850 · Psychiatry Physician · Williston, VT
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Allan, M.D. is a Psychiatry Physician provider in Williston, VT (NPI 1033258850).
Provider details
- NPI number
- 1033258850
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 803395 (VT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lamotrigine | 36 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 26 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 23 |
| Duloxetine Hcl | 23 |
| Clonazepam | 21 |
| Buspirone Hcl | 19 |
| Zolpidem Tartrate | 15 |
| Trazodone Hcl | 15 |
| Sertraline Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2019-03-01
Frequently asked questions
- What is David Allan's NPI number?
- David Allan's National Provider Identifier (NPI) is 1033258850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Allan's specialty?
- David Allan is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is David Allan located?
- David Allan's practice location on file with NPPES is 4185 St George Rd, Williston, VT 05495-7695.
- What is David Allan's phone number?
- The practice phone number listed in the NPPES registry for David Allan is (802) 879-5333.
- Does David Allan accept Medicare?
- David Allan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Allan's NPI active?
- Yes — David Allan's NPI (1033258850) is active in the NPPES registry as of the last update on 2019-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.