William Bast, D.M.D.
NPI 1063543650 · Oral and Maxillofacial Surgery (Dentist) · Hartsdale, NY
William Bast, D.M.D. is a Oral and Maxillofacial Surgery (Dentist) provider in Hartsdale, NY (NPI 1063543650).
Provider details
- NPI number
- 1063543650
- Entity type
- Individual
- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)Dental Providers
- Credential
- D.M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 045376 (NY)
Specialties & taxonomies
Dental Providers
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Chlorhexidine Gluconate | 182 | 92 |
| Amoxicillin | 147 | 119 |
| Ibuprofen | 121 | 85 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 112 | 78 |
| Ciprofloxacin Hcl | 23 | 18 |
| Azithromycin | 21 | 18 |
| Clindamycin Hcl | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-08
- Last updated
- 2026-05-18
- Certified
- 2026-05-18
Frequently asked questions
- What is William Bast's NPI number?
- William Bast's National Provider Identifier (NPI) is 1063543650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Bast's specialty?
- William Bast is listed in the NPPES registry with a primary specialty of Oral and Maxillofacial Surgery (Dentist) (Dental Providers).
- Where is William Bast located?
- William Bast's practice location on file with NPPES is 280 N Central Ave Ste 307, Hartsdale, NY 10530-1839.
- What is William Bast's phone number?
- The practice phone number listed in the NPPES registry for William Bast is (914) 997-7688.
- Is William Bast's NPI active?
- Yes — William Bast's NPI (1063543650) is active in the NPPES registry as of the last update on 2026-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.