Gregory Fahrenbach, MD
NPI 1861475964 · Orthopaedic Trauma Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Fahrenbach, MD is a Orthopaedic Trauma Physician provider in Chicago, IL (NPI 1861475964).
Provider details
- NPI number
- 1861475964
- Entity type
- Individual
- Primary specialty
- Orthopaedic Trauma PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036062547 (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
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
- 2005-11-22
- Last updated
- 2015-02-04
Frequently asked questions
- What is Gregory Fahrenbach's NPI number?
- Gregory Fahrenbach's National Provider Identifier (NPI) is 1861475964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Fahrenbach's specialty?
- Gregory Fahrenbach is listed in the NPPES registry with a primary specialty of Orthopaedic Trauma Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Fahrenbach located?
- Gregory Fahrenbach's practice location on file with NPPES is 7447 W Talcott Ave, Chicago, IL 60631-3745.
- What is Gregory Fahrenbach's phone number?
- The practice phone number listed in the NPPES registry for Gregory Fahrenbach is (773) 631-7898.
- Does Gregory Fahrenbach accept Medicare?
- Gregory Fahrenbach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Fahrenbach's NPI active?
- Yes — Gregory Fahrenbach's NPI (1861475964) is active in the NPPES registry as of the last update on 2015-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.