Carmen Gnatenco M.D., S.c.
NPI 1871750711 · Internal Medicine Physician · Oak Lawn, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carmen Gnatenco M.D., S.c. is a Internal Medicine Physician organization in Oak Lawn, IL (NPI 1871750711).
Provider details
- NPI number
- 1871750711
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Julian Gnatenco, Billing Manager(773) 742-8926
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
18 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
- 2008-05-19
- Last updated
- 2020-08-24
- Certified
- 2020-08-24
Frequently asked questions
- What is Carmen Gnatenco M.D., S.c.'s NPI number?
- Carmen Gnatenco M.D., S.c.'s National Provider Identifier (NPI) is 1871750711, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Carmen Gnatenco M.D., S.c.?
- Carmen Gnatenco M.D., S.c. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carmen Gnatenco M.D., S.c. located?
- Carmen Gnatenco M.D., S.c.'s practice location on file with NPPES is 4938 W 95th St, Oak Lawn, IL 60453-2504.
- What is Carmen Gnatenco M.D., S.c.'s phone number?
- The practice phone number listed in the NPPES registry for Carmen Gnatenco M.D., S.c. is (708) 425-4662.
- Does Carmen Gnatenco M.D., S.c. accept Medicare?
- Carmen Gnatenco M.D., S.c. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Carmen Gnatenco M.D., S.c.?
- The authorized official listed on Carmen Gnatenco M.D., S.c.'s NPPES record is Julian Gnatenco, Billing Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Carmen Gnatenco M.D., S.c.'s NPI active?
- Yes — Carmen Gnatenco M.D., S.c.'s NPI (1871750711) is active in the NPPES registry as of the last update on 2020-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.