Gregory Ruzich, MD
NPI 1558011759 · Family Medicine Physician · Mokena, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Ruzich, MD is a Family Medicine Physician provider in Mokena, IL (NPI 1558011759).
Provider details
- NPI number
- 1558011759
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036173012 (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
4 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 79 | 29 |
| Metoprolol Succinate | 31 | 11 |
| Semaglutidebrand: Ozempic | 30 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 26 | — |
| Olmesartan Medoxomil | 24 | — |
| Levothyroxine Sodium | 24 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-03-28
- Last updated
- 2025-09-11
- Certified
- 2025-09-11
Frequently asked questions
- What is Gregory Ruzich's NPI number?
- Gregory Ruzich's National Provider Identifier (NPI) is 1558011759, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ruzich's specialty?
- Gregory Ruzich is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Ruzich located?
- Gregory Ruzich's practice location on file with NPPES is 21202 Owens Rd Ste 201, Mokena, IL 60448-2038.
- What is Gregory Ruzich's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ruzich is (779) 334-0020.
- Does Gregory Ruzich accept Medicare?
- Gregory Ruzich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Ruzich's NPI active?
- Yes — Gregory Ruzich's NPI (1558011759) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.