Gregory Derk, DPM
NPI 1255122461 · Foot & Ankle Surgery Podiatrist · Evanston, IL
Enrolled with Medicare as Order and Referring Only - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Derk, DPM is a Foot & Ankle Surgery Podiatrist provider in Evanston, IL (NPI 1255122461).
Provider details
- NPI number
- 1255122461
- Entity type
- Individual
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- DPM
- Sex
- Male
- Sole proprietor
- No
- License
- 135.001270 (IL)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2025-05-15
- Last updated
- 2025-06-23
- Certified
- 2025-06-23
Frequently asked questions
- What is Gregory Derk's NPI number?
- Gregory Derk's National Provider Identifier (NPI) is 1255122461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Derk's specialty?
- Gregory Derk is listed in the NPPES registry with a primary specialty of Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Gregory Derk located?
- Gregory Derk's practice location on file with NPPES is 2650 Ridge Ave Ste 1304, Evanston, IL 60201-1700.
- What is Gregory Derk's phone number?
- The practice phone number listed in the NPPES registry for Gregory Derk is (773) 702-6760.
- Does Gregory Derk accept Medicare?
- Gregory Derk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Derk's NPI active?
- Yes — Gregory Derk's NPI (1255122461) is active in the NPPES registry as of the last update on 2025-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.