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

Dr. John Frederick, MD

Individual provider Internal Medicine Physician · NPI 1598027153

Dr. John Frederick, MD is an Internal Medicine in Dyer, Indiana. Qualified in 2005, 21 years ago. Practices with Florida Hospital Healthcare Partners, Inc, a 605-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois and Indiana.

Years since qualifying
21
Licensed in
IL, IN
In the registry since
2012
Specialties on file
4
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

24 Joliet St
Dyer, IN 46311-1705
Phone: (219) 865-2141
Show map & directions

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

Additional practice locations (2)

  • 2525 S Michigan Ave, Chicago, IL 60616 — (312) 567-2053
  • 2525 S Michigan Ave, Chicago, IL 60616 — (312) 567-2053

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 01076100A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01076100A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036138817 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1598027153
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2012
Last updated in NPPESMarch 19, 2021
Certification dateMarch 19, 2021
Mailing addressPo Box 781076, Detroit, MI 48278-1076

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Florida Hospital Healthcare Partners, Inc — 605 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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