Martin Gruca, MD
NPI 1144724774 · Cardiovascular Disease Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martin Gruca, MD is a Cardiovascular Disease Physician provider in Chicago, IL (NPI 1144724774).
Provider details
- NPI number
- 1144724774
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125.071702 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$253 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 251 E Huron StChicago, IL 60611Phone: (312) 926-2000
- 10855 Virginia StCrown Point, IN 46307-0210Phone: (888) 824-0200
Registry dates
- Enumerated
- 2018-03-20
- Last updated
- 2025-08-12
- Certified
- 2025-08-12
Frequently asked questions
- What is Martin Gruca's NPI number?
- Martin Gruca's National Provider Identifier (NPI) is 1144724774, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martin Gruca's specialty?
- Martin Gruca is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Martin Gruca located?
- Martin Gruca's practice location on file with NPPES is 5841 S. Maryland Ave, Chicago, IL 60637-1443.
- What is Martin Gruca's phone number?
- The practice phone number listed in the NPPES registry for Martin Gruca is (773) 702-5211.
- Does Martin Gruca accept Medicare?
- Martin Gruca is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Martin Gruca's NPI active?
- Yes — Martin Gruca's NPI (1144724774) is active in the NPPES registry as of the last update on 2025-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.