DIANE P RYAN M,D.
NPI 1932473824
Internal Medicine in Chicago, IL
About Diane P Ryan M,d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANE P RYAN M,D. (NPI 1932473824) is an individual internal medicine provider in Chicago, Illinois, licensed in Indiana (01085017A) and active in the NPI registry since February 2012. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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 (PECOS)
Diane P Ryan M,d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Diane Ryan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 clinicians in this Medicare group
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 clinicians in this Medicare group
Urbana, IL 61801
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Carle Health Care Incorporated
- 2,516 clinicians in this Medicare group
Portage, WI 53901
- Reassigned Medicare billing, Wisconsin enrollment
- 359 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Diane Ryan's NPI number?
The NPI number for Diane Ryan is 1932473824. It was assigned to this individual provider in the NPPES registry on February 24, 2012.
Where is Diane Ryan located?
Diane Ryan practices at 1700 W Van Buren St Suite 500, Chicago, IL 60612. The listed phone number is (312) 563-2875.
What is Diane Ryan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Diane Ryan enrolled in Medicare?
Yes. Diane Ryan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Diane Ryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Ryan reassigns Medicare benefits to 4 organizations: Rush University Medical Center (Chicago, IL), Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI), Carle Health Medical Group (Urbana, IL) and Divine Savior Healthcare, Inc. (Portage, WI). Each 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 Diane Ryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Ryan accept?
Health plans from CareSource and Taro Health list Diane Ryan 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.
When was this NPI record last updated?
The NPPES record for Diane Ryan was last updated on October 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Diane P Ryan, M,D. · NPI 1932473824
Internal Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since February 24, 2012.
## Identity
- **NPI:** 1932473824 (Entity type: Individual)
- **Enumerated:** February 24, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 01085017A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1700 W VAN BUREN ST, SUITE 500, Chicago, IL 60612-5500
- **Phone:** (312) 563-2875 · **Fax:** (312) 942-3012
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Rush University Medical Center (NPI 1184269425, Chicago, IL); Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (NPI 1568787448, Menomonee Falls, WI); Carle Health Medical Group (NPI 1154653947, Urbana, IL); Divine Savior Healthcare, Inc. (NPI 1124083894, Portage, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 27, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1932473824) · Data from the CMS NPPES public registry.