Daniel Castellani, M.D.
NPI 1669459368 · Specialist · Williamsville, NY
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Castellani, M.D. is a Specialist provider in Williamsville, NY (NPI 1669459368).
Provider details
- NPI number
- 1669459368
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 151648-1 (NY)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 65 | 15 |
| Levetiracetam | 46 | — |
| Donepezil Hcl | 37 | — |
| Rivastigmine | 30 | — |
| Gabapentin | 25 | — |
| Memantine Hcl | 21 | — |
| Lamotrigine | 20 | — |
| Ondansetron Hcl | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-23
- Last updated
- 2010-10-26
Frequently asked questions
- What is Daniel Castellani's NPI number?
- Daniel Castellani's National Provider Identifier (NPI) is 1669459368, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Castellani's specialty?
- Daniel Castellani is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Daniel Castellani located?
- Daniel Castellani's practice location on file with NPPES is 6245 Sheridan Dr, Williamsville, NY 14221-4834.
- What is Daniel Castellani's phone number?
- The practice phone number listed in the NPPES registry for Daniel Castellani is (716) 626-2647.
- Does Daniel Castellani accept Medicare?
- Daniel Castellani is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Castellani's NPI active?
- Yes — Daniel Castellani's NPI (1669459368) is active in the NPPES registry as of the last update on 2010-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.