RYAN STOCK M.D.
NPI 1134414618
Anesthesiology in Carbondale, IL
About Ryan Stock M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN STOCK M.D. (NPI 1134414618) is an individual anesthesiology provider in Carbondale, Illinois, licensed in Illinois (036.136803) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Herrin Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 1
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
Ryan Stock M.d. 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 Reassignments
3Medicare enrollment records show Ryan Stock reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Carbondale, IL 62901
- Reassigned Medicare billing, Illinois enrollment
- 702 clinicians in this Medicare group
Maryville, IL 62062
- Reassigned Medicare billing, Illinois enrollment
- 149 clinicians in this Medicare group
Arlington, TX 76006
- Reassigned Medicare billing, Illinois enrollment
- 735 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 4
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Herrin Hospital
Acute Care Hospitals · Herrin, ILMemorial Hospital Of Carbondale
Acute Care Hospitals · Carbondale, ILHarrisburg Medical Center
Acute Care Hospitals · Harrisburg, ILSt Joseph Memorial Hospital
Critical Access Hospitals · Murphysboro, ILMedicare 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.
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 Ryan Stock's NPI number?
The NPI number for Ryan Stock is 1134414618. It was assigned to this individual provider in the NPPES registry on June 13, 2011.
Where is Ryan Stock located?
Ryan Stock practices at 405 W Jackson St Sih Medical Group Anesthesiology, Carbondale, IL 62903. The listed phone number is (618) 457-5111.
What is Ryan Stock's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ryan Stock enrolled in Medicare?
Yes. Ryan Stock 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 organizations bill Medicare for Ryan Stock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Stock reassigns Medicare benefits to 3 organizations: Southern Illinois Medical Services, Nfp (Carbondale, IL), G & G Anesthesia LLC (Maryville, IL) and Northstar Anesthesia Of Illinois, LLC (Arlington, TX). 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 Ryan Stock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ryan Stock affiliated with any hospitals?
According to CMS data, Ryan Stock is affiliated with Herrin Hospital, Memorial Hospital Of Carbondale, Harrisburg Medical Center and St Joseph Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Ryan Stock was last updated on December 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.