MARK E NIELSON MD
NPI 1942407838
Anesthesiology in Muncie, IN
About Mark E Nielson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK E NIELSON MD (NPI 1942407838) is an individual anesthesiology provider in Muncie, Indiana, licensed in Indiana (01067783A) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with Indiana University Health Ball Memorial Hospital, and maintains a secondary practice location in Indianapolis.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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 and accepts Medicare assignment
Mark E Nielson 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
14Medicare enrollment records show Mark Nielson reassigns Medicare billing to 14 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Muncie, IN 47303
- Reassigned Medicare billing, Indiana enrollment
- Medicare enrollment name: Indiana University Health Ball Memorial Physicians Inc
- 635 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 1,781 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 259 clinicians in this Medicare group
Van Wert, OH 45891
- Reassigned Medicare billing, Indiana enrollment
- 100 clinicians in this Medicare group
Plymouth, IN 46563
- Reassigned Medicare billing, Indiana enrollment
- 76 clinicians in this Medicare group
Bremen, IN 46506
- Reassigned Medicare billing, Indiana enrollment
- 97 clinicians in this Medicare group
Goshen, IN 46526
- Reassigned Medicare billing, Indiana enrollment
- 83 clinicians in this Medicare group
Elkhart, IN 46514
- Reassigned Medicare billing, Indiana enrollment
- 104 clinicians in this Medicare group
South Bend, IN 46617
- Reassigned Medicare billing, Indiana enrollment
- 211 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 3
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 Ball Memorial Hospital
Acute Care Hospitals · Muncie, INOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MUNCIE, IN 47303
MUNCIE, IN 47303
MUNCIE, IN 47303
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 Mark Nielson's NPI number?
The NPI number for Mark Nielson is 1942407838. It was assigned to this individual provider in the NPPES registry on July 2, 2007.
Where is Mark Nielson located?
Mark Nielson practices at 2401 W University Ave, Muncie, IN 47303. The listed phone number is (765) 751-2649.
What is Mark Nielson's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mark Nielson enrolled in Medicare?
Yes. Mark Nielson 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 Mark Nielson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Nielson reassigns Medicare benefits to 14 organizations: Health Care Connections, Inc. (Muncie, IN), Indiana University Health Care Associates, Inc. (Indianapolis, IN), Iu Health Medical Group, LLC (Indianapolis, IN), Iu Anesthesiology Associates, LLC (Indianapolis, IN), Clinical Colleagues LLC (Van Wert, OH) and 9 more organizations, listed in the Medicare section above. 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 Mark Nielson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Nielson accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource and Cigna Healthcare list Mark Nielson 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 Mark Nielson affiliated with any hospitals?
According to CMS data, Mark Nielson is affiliated with Indiana University Health Ball Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Mark Nielson was last updated on December 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Mark E Nielson, MD · NPI 1942407838
Anesthesiology physician in Muncie, Indiana. Individual provider, active in the CMS NPPES registry since July 2, 2007.
## Identity
- **NPI:** 1942407838 (Entity type: Individual)
- **Enumerated:** July 2, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 01067783A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2401 W UNIVERSITY AVE, Muncie, IN 47303-3428
- **Phone:** (765) 751-2649 · **Fax:** (765) 281-6671
## 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:** 14 organizations under Medicare reassignment (form CMS-855R): Health Care Connections, Inc. (NPI 1013191493, Muncie, IN); Indiana University Health Care Associates, Inc. (NPI 1679949002, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN); Iu Anesthesiology Associates, LLC (NPI 1285684407, Indianapolis, IN); Clinical Colleagues LLC (NPI 1992725766, Van Wert, OH); and 9 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2007
## Record status
- **NPPES last updated:** December 4, 2024
- **Other identifiers:** Other Q00370660 (IN); Medicaid 300030750 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1942407838) · Data from the CMS NPPES public registry.