Gregory Kobak, MD
NPI 1851330138 · Pediatric Gastroenterology Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Kobak, MD is a Pediatric Gastroenterology Physician provider in Aurora, CO (NPI 1851330138).
Provider details
- NPI number
- 1851330138
- Entity type
- Individual
- Primary specialty
- Pediatric Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101234399 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-06-05
- Last updated
- 2022-12-28
- Certified
- 2022-12-28
Frequently asked questions
- What is Gregory Kobak's NPI number?
- Gregory Kobak's National Provider Identifier (NPI) is 1851330138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Kobak's specialty?
- Gregory Kobak is listed in the NPPES registry with a primary specialty of Pediatric Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Kobak located?
- Gregory Kobak's practice location on file with NPPES is 13123 E 16th Ave, Aurora, CO 80045-7106.
- What is Gregory Kobak's phone number?
- The practice phone number listed in the NPPES registry for Gregory Kobak is (720) 777-1234.
- Does Gregory Kobak accept Medicare?
- Gregory Kobak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Kobak's NPI active?
- Yes — Gregory Kobak's NPI (1851330138) is active in the NPPES registry as of the last update on 2022-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.