A & M Internal Medicine, Ltd.
NPI 1356558373 · Internal Medicine Physician · Carol Stream, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
A & M Internal Medicine, Ltd. is a Internal Medicine Physician organization in Carol Stream, IL (NPI 1356558373).
Provider details
- NPI number
- 1356558373
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Marc Wiener, President(630) 562-9100
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
19 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-17
- Last updated
- 2015-07-29
Frequently asked questions
- What is A & M Internal Medicine, Ltd.'s NPI number?
- A & M Internal Medicine, Ltd.'s National Provider Identifier (NPI) is 1356558373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is A & M Internal Medicine, Ltd.?
- A & M Internal Medicine, Ltd. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is A & M Internal Medicine, Ltd. located?
- A & M Internal Medicine, Ltd.'s practice location on file with NPPES is 27w170 Saint Charles Rd, Carol Stream, IL 60188-1935.
- What is A & M Internal Medicine, Ltd.'s phone number?
- The practice phone number listed in the NPPES registry for A & M Internal Medicine, Ltd. is (630) 562-9100.
- Does A & M Internal Medicine, Ltd. accept Medicare?
- A & M Internal Medicine, Ltd. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for A & M Internal Medicine, Ltd.?
- The authorized official listed on A & M Internal Medicine, Ltd.'s NPPES record is Marc Wiener, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is A & M Internal Medicine, Ltd.'s NPI active?
- Yes — A & M Internal Medicine, Ltd.'s NPI (1356558373) is active in the NPPES registry as of the last update on 2015-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.