REY ARNOLD SRIAROON MD
NPI 1407199003
Hospitalist in Naperville, IL
About Rey Arnold Sriaroon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REY ARNOLD SRIAROON MD (NPI 1407199003) is an individual hospitalist provider in Naperville, Illinois, licensed in Illinois (036139337) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Swedish Hospital, and maintains a secondary practice location in Hobart.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Rey Arnold Sriaroon Md 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
5Medicare enrollment records show Rey Sriaroon reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Naperville, IL 60540
- Reassigned Medicare billing, Illinois enrollment
- 561 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
Ottawa, IL 61350
- Reassigned Medicare billing, Illinois enrollment
- 233 clinicians in this Medicare group
Hobart, IN 46342
- Reassigned Medicare billing, Indiana enrollment
- 44 clinicians in this Medicare group
Bridgeton, MO 63044
- Reassigned Medicare billing, Illinois enrollment
- 419 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 6
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Swedish Hospital
Acute Care Hospitals · Chicago, ILEdward Hospital
Acute Care Hospitals · Naperville, ILSt Mary Medical Center Inc
Acute Care Hospitals · Hobart, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60540 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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 3
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.
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
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 Rey Sriaroon's NPI number?
The NPI number for Rey Sriaroon is 1407199003. It was assigned to this individual provider in the NPPES registry on April 2, 2013.
Where is Rey Sriaroon located?
Rey Sriaroon practices at 801 S Washington St, Naperville, IL 60540. The listed phone number is (630) 527-3000.
What is Rey Sriaroon's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Rey Sriaroon enrolled in Medicare?
Yes. Rey Sriaroon 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 Rey Sriaroon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rey Sriaroon reassigns Medicare benefits to 5 organizations: Edward Health Ventures (Naperville, IL), Endeavor Health Medical Group (Evanston, IL), 24 On Physicians, PC (Ottawa, IL), 24 On Physician Partners, PC (Hobart, IN) and Sound Physicians Of Illinois, LLC (Bridgeton, MO). 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 Rey Sriaroon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Rey Sriaroon affiliated with any hospitals?
According to CMS data, Rey Sriaroon is affiliated with Swedish Hospital, Edward Hospital and St Mary Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Rey Sriaroon was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Rey Arnold Sriaroon, MD · NPI 1407199003
Hospitalist physician in Naperville, Illinois. Individual provider, active in the CMS NPPES registry since April 2, 2013.
## Identity
- **NPI:** 1407199003 (Entity type: Individual)
- **Enumerated:** April 2, 2013
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036139337 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 801 S WASHINGTON ST, Naperville, IL 60540-7430
- **Phone:** (630) 527-3000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Edward Health Ventures (NPI 1063830081, Naperville, IL); Endeavor Health Medical Group (NPI 1497701882, Evanston, IL); 24 On Physicians, PC (NPI 1346480431, Ottawa, IL); 24 On Physician Partners, PC (NPI 1013497106, Hobart, IN); Sound Physicians Of Illinois, LLC (NPI 1043598865, Bridgeton, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** August 31, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1407199003) · Data from the CMS NPPES public registry.