Marc Wiener, M.D.
NPI 1861435927 · Internal Medicine Physician · Carol Stream, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Wiener, M.D. is a Internal Medicine Physician provider in Carol Stream, IL (NPI 1861435927).
Provider details
- NPI number
- 1861435927
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036076864 (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
20 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
260 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 163 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 66 | $132 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $132 |
Typical Medicare-allowed amounts for these services range $94–$132 (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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 54 | 14 |
| Metoprolol Succinate | 46 | 12 |
| Atorvastatin Calcium | 37 | — |
| Amlodipine Besylate | 35 | — |
| Labetalol Hcl | 35 | — |
| Furosemide | 32 | — |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2020-02-19
- Certified
- 2020-02-19
Frequently asked questions
- What is Marc Wiener's NPI number?
- Marc Wiener's National Provider Identifier (NPI) is 1861435927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Wiener's specialty?
- Marc Wiener is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Wiener located?
- Marc Wiener's practice location on file with NPPES is 27w170 Saint Charles Rd, Carol Stream, IL 60188-1935.
- What is Marc Wiener's phone number?
- The practice phone number listed in the NPPES registry for Marc Wiener is (630) 562-9100.
- Does Marc Wiener accept Medicare?
- Marc Wiener is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Wiener's NPI active?
- Yes — Marc Wiener's NPI (1861435927) is active in the NPPES registry as of the last update on 2020-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.