MICHAEL MACKLIN M.D.
NPI 1194287185
Internal Medicine - Rheumatology in Chicago, IL
About Michael Macklin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL MACKLIN M.D. (NPI 1194287185) is an individual rheumatology provider in Chicago, Illinois, licensed in Illinois (036159238) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and is a graduate of University Of Pittsburgh School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Michael Macklin M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Michael Macklin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 1,905 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois and Indiana enrollments
- 2,237 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
The University Of Chicago Medical Center
Acute Care Hospitals · Chicago, ILIngalls Memorial Hospital
Acute Care Hospitals · Harvey, ILCommunity Hospital
Acute Care Hospitals · Munster, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60637
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Macklin's NPI number?
The NPI number for Michael Macklin is 1194287185. It was assigned to this individual provider in the NPPES registry on April 1, 2019.
Where is Michael Macklin located?
Michael Macklin practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (773) 702-6119.
What is Michael Macklin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Michael Macklin enrolled in Medicare?
Yes. Michael Macklin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Macklin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Macklin reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and University Of Chicago (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Macklin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Macklin accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Michael Macklin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Michael Macklin affiliated with any hospitals?
According to CMS data, Michael Macklin is affiliated with The University Of Chicago Medical Center, Ingalls Memorial Hospital and Community Hospital.
When was this NPI record last updated?
The NPPES record for Michael Macklin was last updated on January 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.