AUSTIN STANLEY NIELSEN MD
NPI 1639631831
Family Medicine in Bloomington, IN
About Austin Stanley Nielsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AUSTIN STANLEY NIELSEN MD (NPI 1639631831) is an individual family medicine provider in Bloomington, Indiana, licensed in Indiana (01087938A) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Indiana University Health Bloomington Hospital, and maintains a secondary practice location in Odessa.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Austin Stanley Nielsen 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
2Medicare enrollment records show Austin Nielsen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bloomington, IN 47408
- Reassigned Medicare billing, Indiana enrollment
- 783 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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 11
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Indiana University Health Bloomington Hospital
Acute Care Hospitals · Bloomington, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 47404 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BLOOMINGTON, IN 47404
BLOOMINGTON, IN 47404
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 Austin Nielsen's NPI number?
The NPI number for Austin Nielsen is 1639631831. It was assigned to this individual provider in the NPPES registry on April 5, 2019.
Where is Austin Nielsen located?
Austin Nielsen practices at 5921 W State Road 46, Bloomington, IN 47404. The listed phone number is (812) 935-8866.
What is Austin Nielsen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Austin Nielsen enrolled in Medicare?
Yes. Austin Nielsen 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 Austin Nielsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Austin Nielsen reassigns Medicare benefits to 2 organizations: Indiana University Health Southern Indiana Physicians, LLC (Bloomington, IN) and Iu Health Medical Group, LLC (Indianapolis, IN). 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 Austin Nielsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Austin Nielsen accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 2 other insurers list Austin Nielsen 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 Austin Nielsen affiliated with any hospitals?
According to CMS data, Austin Nielsen is affiliated with Indiana University Health Bloomington Hospital.
When was this NPI record last updated?
The NPPES record for Austin Nielsen was last updated on July 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Austin Stanley Nielsen, MD · NPI 1639631831
Family Medicine physician in Bloomington, Indiana. Individual provider, active in the CMS NPPES registry since April 5, 2019.
## Identity
- **NPI:** 1639631831 (Entity type: Individual)
- **Enumerated:** April 5, 2019
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 01087938A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 5921 W STATE ROAD 46, Bloomington, IN 47404-9359
- **Phone:** (812) 935-8866
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Indiana University Health Southern Indiana Physicians, LLC (NPI 1013953983, Bloomington, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Texas Tech University Health Science Center School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** July 19, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1639631831) · Data from the CMS NPPES public registry.