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

Dr. Mark Steven Reiter, MD

Individual provider Internal Medicine Physician · NPI 1902864408

Dr. Mark Steven Reiter, MD is an Internal Medicine Physician in Oak Lawn, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
Specialties on file
2
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

4400 W 95th St
Oak Lawn, IL 60453-2654
Phone: (708) 499-2323
Fax: (708) 499-2324
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (IL)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X (IL)

Record details

NPI number1902864408
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 3, 2006
Last updated in NPPESJuly 13, 2026
Mailing address4400 W 95th St, Oak Lawn, IL 60453-2654

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