DR. JULIA A DYER M.D., M.P.H.
NPI 1871575654
Internal Medicine - Gastroenterology in Chicago, IL
About Dr. Julia A Dyer M.d., M.p.h. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JULIA A DYER M.D., M.P.H. (NPI 1871575654) is an individual gastroenterology provider in Chicago, Illinois, licensed in Illinois (036-054925) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with Thorek Memorial Hospital, and is a graduate of University Of California, Geffen School Of Medicine (1976).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Julia A Dyer M.d., M.p.h. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Julia Dyer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60613
- Reassigned Medicare billing, Illinois enrollment
- 61 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thorek Memorial Hospital
Acute Care Hospitals · Chicago, ILMethodist Hospital Of Chicago
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60602 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Julia Dyer's NPI number?
The NPI number for Julia Dyer is 1871575654. It was assigned to this individual provider in the NPPES registry on November 16, 2005.
Where is Julia Dyer located?
Julia Dyer practices at 25 E Washington St Ste 1116, Chicago, IL 60602. The listed phone number is (773) 388-1100.
What is Julia Dyer's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Julia Dyer enrolled in Medicare?
Yes. Julia Dyer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Julia Dyer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julia Dyer reassigns Medicare benefits to Thorek Memorial Hospital (Chicago, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Julia Dyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Julia Dyer accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Julia Dyer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Julia Dyer affiliated with any hospitals?
According to CMS data, Julia Dyer is affiliated with Thorek Memorial Hospital and Methodist Hospital Of Chicago.
When was this NPI record last updated?
The NPPES record for Julia Dyer was last updated on February 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Julia A Dyer, M.D., M.P.H. · NPI 1871575654
Gastroenterology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since November 16, 2005.
## Identity
- **NPI:** 1871575654 (Entity type: Individual)
- **Enumerated:** November 16, 2005
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 036-054925 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 25 E WASHINGTON ST, STE 1116, Chicago, IL 60602-1708
- **Phone:** (773) 388-1100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Thorek Memorial Hospital (NPI 1982643961, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 1976
## Record status
- **NPPES last updated:** February 5, 2016
- **Other identifiers:** Medicaid 036054925 (IL); Medicare UPIN D14612 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1871575654) · Data from the CMS NPPES public registry.