Mark Hroncich, MD
NPI 1265465108 · Internal Medicine Physician · Berwyn, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hroncich, MD is a Internal Medicine Physician provider in Berwyn, IL (NPI 1265465108).
Provider details
- NPI number
- 1265465108
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-071240 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,078 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 401 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 261 | $93 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 151 | $133 |
| Administration of Influenza Virus VaccineG0008 | 65 | $29 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 42 | $17 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 148 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 564 | 176 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 283 | 40 |
| Amlodipine Besylate | 283 | 85 |
| Lisinopril | 242 | 68 |
| Levothyroxine Sodium | 225 | 63 |
| Gabapentin | 224 | 65 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Hroncich's NPI number?
- Mark Hroncich's National Provider Identifier (NPI) is 1265465108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hroncich's specialty?
- Mark Hroncich is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hroncich located?
- Mark Hroncich's practice location on file with NPPES is 6425 Cermak Rd Ste 101-102, Berwyn, IL 60402-2338.
- What is Mark Hroncich's phone number?
- The practice phone number listed in the NPPES registry for Mark Hroncich is (708) 484-0044.
- Does Mark Hroncich accept Medicare?
- Mark Hroncich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hroncich's NPI active?
- Yes — Mark Hroncich's NPI (1265465108) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.