Gregory Pacelli, M.D., PH.D.
NPI 1245331388 · Ophthalmology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Pacelli, M.D., PH.D. is a Ophthalmology Physician provider in Chicago, IL (NPI 1245331388).
Provider details
- NPI number
- 1245331388
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036103468 (IL)
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
- 2006-09-25
- Last updated
- 2016-03-04
Frequently asked questions
- What is Gregory Pacelli's NPI number?
- Gregory Pacelli's National Provider Identifier (NPI) is 1245331388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Pacelli's specialty?
- Gregory Pacelli is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Pacelli located?
- Gregory Pacelli's practice location on file with NPPES is 3541 W Irving Park Rd, Chicago, IL 60618-3219.
- What is Gregory Pacelli's phone number?
- The practice phone number listed in the NPPES registry for Gregory Pacelli is (773) 478-1600.
- Does Gregory Pacelli accept Medicare?
- Gregory Pacelli is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Pacelli's NPI active?
- Yes — Gregory Pacelli's NPI (1245331388) is active in the NPPES registry as of the last update on 2016-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.