William Castellani, MD
NPI 1164486320 · Clinical Pathology/Laboratory Medicine Physician · Hershey, PA
William Castellani, MD is a Clinical Pathology/Laboratory Medicine Physician provider in Hershey, PA (NPI 1164486320).
Provider details
- NPI number
- 1164486320
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD426552 (PA)
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
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-14
- Last updated
- 2009-09-21
Frequently asked questions
- What is William Castellani's NPI number?
- William Castellani's National Provider Identifier (NPI) is 1164486320, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Castellani's specialty?
- William Castellani is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Castellani located?
- William Castellani's practice location on file with NPPES is 500 University Dr, Hershey, PA 17033-2360.
- What is William Castellani's phone number?
- The practice phone number listed in the NPPES registry for William Castellani is (800) 233-4082.
- Is William Castellani's NPI active?
- Yes — William Castellani's NPI (1164486320) is active in the NPPES registry as of the last update on 2009-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.