MICHAEL K IDUN MD
NPI 1033186903
Anesthesiology in Chambersburg, PA
About Michael K Idun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL K IDUN MD (NPI 1033186903) is an individual anesthesiology provider in Chambersburg, Pennsylvania, licensed in Pennsylvania (MD425631) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Gettysburg Hospital, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 4
Other Identifiers 21
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
Michael K Idun 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
3Medicare enrollment records show Michael Idun reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chambersburg, PA 17201
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 clinicians in this Medicare group
Gettysburg, PA 17325
- Reassigned Medicare billing, Pennsylvania enrollment
- 156 clinicians in this Medicare group
Melville, NY 11747
- Reassigned Medicare billing, Pennsylvania enrollment
- 928 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Gettysburg Hospital
Acute Care Hospitals · Gettysburg, PAWellspan Chambersburg Hospital
Acute Care Hospitals · Chambersburg, PAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHAMBERSBURG, PA 17201
CHAMBERSBURG, PA 17201
CHAMBERSBURG, PA 17201
CHAMBERSBURG, PA 17201
CHAMBERSBURG, PA 17201
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 Michael Idun's NPI number?
The NPI number for Michael Idun is 1033186903. It was assigned to this individual provider in the NPPES registry on March 1, 2006.
Where is Michael Idun located?
Michael Idun practices at 112 N 7th St, Chambersburg, PA 17201. The listed phone number is (717) 267-7164.
What is Michael Idun's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Michael Idun enrolled in Medicare?
Yes. Michael Idun 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 Michael Idun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Idun reassigns Medicare benefits to 3 organizations: Wellspan Medical Group (Chambersburg, PA), The Gettysburg Hospital (Gettysburg, PA) and North American Partners In Anesthesia, Pennsylvania , LLC (Melville, NY). 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 Michael Idun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Idun affiliated with any hospitals?
According to CMS data, Michael Idun is affiliated with Gettysburg Hospital and Wellspan Chambersburg Hospital.
When was this NPI record last updated?
The NPPES record for Michael Idun was last updated on January 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Michael K Idun, MD · NPI 1033186903
Anesthesiology physician in Chambersburg, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 1, 2006.
## Identity
- **NPI:** 1033186903 (Entity type: Individual)
- **Enumerated:** March 1, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD425631 (Pennsylvania)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 112 N 7TH ST, Chambersburg, PA 17201-1720
- **Phone:** (717) 267-7164 · **Fax:** (717) 267-7414
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Wellspan Medical Group (NPI 1386429702, Chambersburg, PA); The Gettysburg Hospital (NPI 1366472706, Gettysburg, PA); North American Partners In Anesthesia, Pennsylvania , LLC (NPI 1639137854, Melville, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Howard University College Of Medicine, class of 2001
## Record status
- **NPPES last updated:** January 30, 2025
- **Other identifiers:** Other 25-1716306 (PA); Other 25-1716306 (PA); Other 001828361 (PA); and 18 more
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Source: [NPI Profile](https://npiprofile.com/npi/1033186903) · Data from the CMS NPPES public registry.