DR. ARUN SUNIL CHANDNANI MD
NPI 1558046375
Hospitalist in Saint Louis, MO
About Dr. Arun Sunil Chandnani Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ARUN SUNIL CHANDNANI MD (NPI 1558046375) is an individual hospitalist provider in Saint Louis, Missouri, licensed in Missouri (2026021277) and active in the NPI registry since June 2023. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of University Of Colorado School Of Medicine, Aurora (2023).
NPPES Registry Identity
Specialties & Licenses 2
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. Arun Sunil Chandnani 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 Reassignment
Medicare enrollment records show Arun Chandnani reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Patient Reviews User submitted
Reviews are submitted by site visitors and approved by a human moderator before publication.
Review by James ***** December 16, 2025
5/5Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Arun Chandnani's NPI number?
The NPI number for Arun Chandnani is 1558046375. It was assigned to this individual provider in the NPPES registry on June 19, 2023.
Where is Arun Chandnani located?
Arun Chandnani practices at 1 Barnes Jewish Hospital Plz Div Im Hospitalist, Saint Louis, MO 63110. The listed phone number is (314) 362-1700.
What is Arun Chandnani's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Arun Chandnani enrolled in Medicare?
Yes. Arun Chandnani 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 Arun Chandnani's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arun Chandnani reassigns Medicare benefits to Washington University (Saint Louis, MO). 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 Arun Chandnani's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Arun Chandnani affiliated with any hospitals?
According to CMS data, Arun Chandnani is affiliated with Barnes Jewish Hospital.
When was this NPI record last updated?
The NPPES record for Arun Chandnani was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Arun Sunil Chandnani, MD · NPI 1558046375
Hospitalist physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 19, 2023.
## Identity
- **NPI:** 1558046375 (Entity type: Individual)
- **Enumerated:** June 19, 2023
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 2026021277 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST, Saint Louis, MO 63110-1003
- **Phone:** (314) 362-1700 · **Fax:** (314) 362-9878
## 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:** Washington University (NPI 1992746903, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Colorado School Of Medicine, Aurora, class of 2023
## Record status
- **NPPES last updated:** July 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1558046375) · Data from the CMS NPPES public registry.