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

James E Harley, MD

Individual provider Internal Medicine Physician · NPI 1174582738

James E Harley, MD is an Internal Medicine Physician in McHenry, Illinois. Works from 3 locations. Licensed in Illinois and Indiana.

Licensed in
IL, IN
In the registry since
2006
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

4309 W Medical Center Dr Ste A102
McHenry, IL 60050-8436
Phone: (815) 338-6600
Show map & directions

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

Additional practice locations (2)

  • 800 W Central Rd, Arlington Heights, IL 60005-2349 — (877) 635-9229
  • 2222 W Division St, Chicago, IL 60622-2990 — (773) 486-8820

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036096836 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036-096836 (IL)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 036096836 (IL)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 01050245 (IN)

Record details

NPI number1174582738
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2006
Last updated in NPPESMarch 1, 2023
Certification dateMarch 1, 2023

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 patients487
Services billed 505 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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.

Other providers in McHenry