DR. MARK A PASSERMAN DO
NPI 1851404313
Family Medicine in Dwight, IL
About Dr. Mark A Passerman Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK A PASSERMAN DO (NPI 1851404313) is an individual family medicine provider in Dwight, Illinois, licensed in Illinois (036-116449) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Morris Hospital & Healthcare Centers, and maintains a secondary practice location in Braidwood.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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. Mark A Passerman Do 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 Reassignment
Medicare enrollment records show Mark Passerman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Morris, IL 60450
- Reassigned Medicare billing, Illinois enrollment
- 207 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 11
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Morris Hospital & Healthcare Centers
Acute Care Hospitals · Morris, ILOsf Saint Elizabeth Mdl Ctr
Acute Care Hospitals · Ottawa, ILSaint James Hospital
Acute Care Hospitals · Pontiac, ILRiverside Medical Center
Acute Care Hospitals · Kankakee, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60420 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 18
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Mark Passerman's NPI number?
The NPI number for Mark Passerman is 1851404313. It was assigned to this individual provider in the NPPES registry on August 17, 2006.
Where is Mark Passerman located?
Mark Passerman practices at 101 S Prairie Ave, Dwight, IL 60420. The listed phone number is (815) 584-3291.
What is Mark Passerman's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mark Passerman enrolled in Medicare?
Yes. Mark Passerman 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 organization bills Medicare for Mark Passerman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Passerman reassigns Medicare benefits to Morris Hospital (Morris, IL). The 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 Mark Passerman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Passerman accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Mark Passerman 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 Mark Passerman affiliated with any hospitals?
According to CMS data, Mark Passerman is affiliated with Morris Hospital & Healthcare Centers, Osf Saint Elizabeth Mdl Ctr, Saint James Hospital and Riverside Medical Center.
When was this NPI record last updated?
The NPPES record for Mark Passerman was last updated on June 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.