Daniel A. Castellani, M.D. P.C.
NPI 1134269962 · Neurology Physician · Williamsville, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel A. Castellani, M.D. P.C. is a Neurology Physician organization in Williamsville, NY (NPI 1134269962).
Provider details
- NPI number
- 1134269962
- Entity type
- Organization
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Daniel Castellani, President(716) 626-2647
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-08
- Last updated
- 2020-08-22
Frequently asked questions
- What is Daniel A. Castellani, M.D. P.C.'s NPI number?
- Daniel A. Castellani, M.D. P.C.'s National Provider Identifier (NPI) is 1134269962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Daniel A. Castellani, M.D. P.C.?
- Daniel A. Castellani, M.D. P.C. is classified in the NPPES registry as Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel A. Castellani, M.D. P.C. located?
- Daniel A. Castellani, M.D. P.C.'s practice location on file with NPPES is 6245 Sheridan Dr, Williamsville, NY 14221-4834.
- What is Daniel A. Castellani, M.D. P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Daniel A. Castellani, M.D. P.C. is (716) 626-2647.
- Does Daniel A. Castellani, M.D. P.C. accept Medicare?
- Daniel A. Castellani, M.D. P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Daniel A. Castellani, M.D. P.C.?
- The authorized official listed on Daniel A. Castellani, M.D. P.C.'s NPPES record is Daniel Castellani, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Daniel A. Castellani, M.D. P.C.'s NPI active?
- Yes — Daniel A. Castellani, M.D. P.C.'s NPI (1134269962) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.