ADAM MICHAEL OLSZEWSKI MD
NPI 1164818753
Neurological Surgery in Springfield, MO
About Adam Michael Olszewski Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADAM MICHAEL OLSZEWSKI MD (NPI 1164818753) is an individual neurological surgery provider in Springfield, Missouri, licensed in Arkansas (E-16879) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Joplin, and maintains a secondary practice location in Fort Smith.
NPPES Registry Identity
Specialties & Licenses
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
Adam Michael Olszewski 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
4Medicare enrollment records show Adam Olszewski reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, MO 65807
- Reassigned Medicare billing, Missouri enrollment
- 1,487 clinicians in this Medicare group
Carthage, MO 64836
- Reassigned Medicare billing, Missouri enrollment
- 562 clinicians in this Medicare group
Bella Vista, AR 72714
- Reassigned Medicare billing, Arkansas enrollment
- 472 clinicians in this Medicare group
Fort Smith, AR 72903
- Reassigned Medicare billing, Arkansas enrollment
- 658 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Joplin
Acute Care Hospitals · Joplin, MOMercy Hospital Springfield
Acute Care Hospitals · Springfield, MOMercy St Francis Hospital
Critical Access Hospitals · Mountain View, MOMercy Hospital Carthage
Critical Access Hospitals · Carthage, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 65804 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SPRINGFIELD, MO 65804
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 Adam Olszewski's NPI number?
The NPI number for Adam Olszewski is 1164818753. It was assigned to this individual provider in the NPPES registry on April 9, 2015.
Where is Adam Olszewski located?
Adam Olszewski practices at 1229 E Seminole St Ste 220, Springfield, MO 65804. The listed phone number is (417) 820-2064.
What is Adam Olszewski's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Adam Olszewski enrolled in Medicare?
Yes. Adam Olszewski 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 Adam Olszewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam Olszewski reassigns Medicare benefits to 4 organizations: Mercy Clinic Springfield Communities (Springfield, MO), Mercy Clinic Joplin LLC (Carthage, MO), Mercy Health Northwest Arkansas Communities (Bella Vista, AR) and Mercy Clinic Fort Smith Communities (Fort Smith, AR). 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 Adam Olszewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Adam Olszewski affiliated with any hospitals?
According to CMS data, Adam Olszewski is affiliated with Mercy Hospital Joplin, Mercy Hospital Springfield, Mercy St Francis Hospital and Mercy Hospital Carthage.
When was this NPI record last updated?
The NPPES record for Adam Olszewski was last updated on January 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Adam Michael Olszewski, MD · NPI 1164818753
Neurological Surgery physician in Springfield, Missouri. Individual provider, active in the CMS NPPES registry since April 9, 2015.
## Identity
- **NPI:** 1164818753 (Entity type: Individual)
- **Enumerated:** April 9, 2015
- **Primary specialty:** Neurological Surgery · taxonomy 207T00000X
- **State license:** E-16879 (Arkansas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1229 E SEMINOLE ST STE 220, Springfield, MO 65804-2227
- **Phone:** (417) 820-2064 · **Fax:** (417) 820-8868
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic Springfield Communities (NPI 1245277631, Springfield, MO); Mercy Clinic Joplin LLC (NPI 1477822567, Carthage, MO); Mercy Health Northwest Arkansas Communities (NPI 1396173514, Bella Vista, AR); Mercy Clinic Fort Smith Communities (NPI 1902073620, Fort Smith, AR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** January 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1164818753) · Data from the CMS NPPES public registry.