DR. MICHAEL PAPAKONSTANTINOU MD
NPI 1215673041
Hospitalist in Chicago, IL
About Dr. Michael Papakonstantinou Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL PAPAKONSTANTINOU MD (NPI 1215673041) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036176990) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS, is affiliated with Ingalls Memorial Hospital, and maintains a secondary practice location in Harvey.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Dr. Michael Papakonstantinou Md 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 Papakonstantinou 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 enrollment
- 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ingalls Memorial Hospital
Acute Care Hospitals · Harvey, ILPhysician 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 Papakonstantinou's NPI number?
The NPI number for Michael Papakonstantinou is 1215673041. It was assigned to this individual provider in the NPPES registry on May 5, 2022.
Where is Michael Papakonstantinou located?
Michael Papakonstantinou practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (888) 824-0200.
What is Michael Papakonstantinou's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Michael Papakonstantinou enrolled in Medicare?
Yes. Michael Papakonstantinou 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 Papakonstantinou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Papakonstantinou 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 Papakonstantinou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Papakonstantinou accept?
Health plans from Oscar Health list Michael Papakonstantinou 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 Papakonstantinou affiliated with any hospitals?
According to CMS data, Michael Papakonstantinou is affiliated with Ingalls Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Michael Papakonstantinou was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Dr. Michael Papakonstantinou, MD · NPI 1215673041
Hospitalist physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since May 5, 2022.
## Identity
- **NPI:** 1215673041 (Entity type: Individual)
- **Enumerated:** May 5, 2022
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036176990 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 5841 S MARYLAND AVE, Chicago, IL 60637-1443
- **Phone:** (888) 824-0200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); University Of Chicago (NPI 1821048786, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** November 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1215673041) · Data from the CMS NPPES public registry.