William Michalak, M.D.
NPI 1063475648 · Anatomic Pathology & Clinical Pathology Physician · Butler, PA
William Michalak, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Butler, PA (NPI 1063475648).
Provider details
- NPI number
- 1063475648
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD043481E (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
- 2006-04-06
- Last updated
- 2007-07-25
Frequently asked questions
- What is William Michalak's NPI number?
- William Michalak's National Provider Identifier (NPI) is 1063475648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Michalak's specialty?
- William Michalak is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is William Michalak located?
- William Michalak's practice location on file with NPPES is 911 E Brady St, Butler, PA 16001-4646.
- What is William Michalak's phone number?
- The practice phone number listed in the NPPES registry for William Michalak is (724) 284-4510.
- Is William Michalak's NPI active?
- Yes — William Michalak's NPI (1063475648) is active in the NPPES registry as of the last update on 2007-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.