Joseph Reznicek, MD
NPI 1649806670 · Anatomic Pathology & Clinical Pathology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Reznicek, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Chicago, IL (NPI 1649806670).
Provider details
- NPI number
- 1649806670
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125076554 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
- 2020-03-21
- Last updated
- 2020-06-13
- Certified
- 2020-06-13
Frequently asked questions
- What is Joseph Reznicek's NPI number?
- Joseph Reznicek's National Provider Identifier (NPI) is 1649806670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Reznicek's specialty?
- Joseph Reznicek is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Reznicek located?
- Joseph Reznicek's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-3055.
- What is Joseph Reznicek's phone number?
- The practice phone number listed in the NPPES registry for Joseph Reznicek is (312) 926-2000.
- Does Joseph Reznicek accept Medicare?
- Joseph Reznicek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Reznicek's NPI active?
- Yes — Joseph Reznicek's NPI (1649806670) is active in the NPPES registry as of the last update on 2020-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.