Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark J Fritz, MD

Individual provider Ophthalmology Physician · NPI 1669509550

Dr. Mark J Fritz, MD is an Ophthalmology in Joliet, Illinois. Graduated from Northwestern University Feinberg Medical School in 1995, 31 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
31
Trained at
Northwestern University Feinberg Medical School
Licensed in
IL
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

212 N Larkin Ave
Joliet, IL 60435-6604
Phone: (815) 741-0666
Fax: (815) 741-0649
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 036099618 (IL)

Record details

NPI number1669509550
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 27, 2007
Last updated in NPPESJune 24, 2008

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1995 (31 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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