Brent Rieger, M.D.
NPI 1437321577 · Internal Medicine Physician · Maywood, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brent Rieger, M.D. is a Internal Medicine Physician provider in Maywood, IL (NPI 1437321577).
Provider details
- NPI number
- 1437321577
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036.118918 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
475 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 | 268 | $100 |
| 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 | 93 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 87 | $68 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 27 | $133 |
Typical Medicare-allowed amounts for these services range $17–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 217 | 60 |
| Amlodipine Besylate | 160 | 50 |
| Lisinopril | 132 | 36 |
| Escitalopram Oxalate | 96 | 13 |
| Metoprolol Succinate | 90 | 29 |
| Levothyroxine Sodium | 87 | 24 |
| Alprazolam |
Practice location
Mailing address
Additional practice locations (1)
- 1001 Commerce Dr Ste 500Oak Brook, IL 60523-8913Phone: (331) 732-4410Fax: (331) 732-4411
Registry dates
- Enumerated
- 2008-03-28
- Last updated
- 2025-10-27
- Certified
- 2025-10-27
Frequently asked questions
- What is Brent Rieger's NPI number?
- Brent Rieger's National Provider Identifier (NPI) is 1437321577, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brent Rieger's specialty?
- Brent Rieger is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brent Rieger located?
- Brent Rieger's practice location on file with NPPES is 2160 S 1st Ave, Maywood, IL 60153-3328.
- What is Brent Rieger's phone number?
- The practice phone number listed in the NPPES registry for Brent Rieger is (708) 216-9000.
- Does Brent Rieger accept Medicare?
- Brent Rieger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brent Rieger's NPI active?
- Yes — Brent Rieger's NPI (1437321577) is active in the NPPES registry as of the last update on 2025-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.