Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark A Passerman, DO

Individual provider Family Medicine Physician · NPI 1851404313

Dr. Mark A Passerman, DO is registered under Family Practice in Dwight, Illinois. Graduated from College of Osteopathic Physicians and Surgeons of Los Angeles in 2002, 24 years ago. Practices with Morris Hospital, a 115-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
24
Trained at
College of Osteopathic Physicians and Surgeons of Los Angeles
Licensed in
IL
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

101 S Prairie Ave
Dwight, IL 60420
Phone: (815) 584-3291
Fax: (815) 584-3475
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 389 E Main St, Braidwood, IL 60408-2010 — (815) 458-2532

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036-116449 (IL)

Record details

NPI number1851404313
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 17, 2006
Last updated in NPPESJune 14, 2021
Certification dateJune 14, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolCOLLEGE OF OSTEOPATHIC PHYSICIANS AND SURGEONS OF LOS ANGELES
Graduated 2002 (24 years in practice)
Group practice Morris Hospital — 115 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients402
Services billed 1,583 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Morris Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 115 clinicians in the practice; 12 are shown here.

Other providers in Dwight