SHANNON MARIE OYSTER CRNA
NPI 1023593787
Nurse Anesthetist, Certified Registered in Mansfield, OH
About Shannon Marie Oyster Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHANNON MARIE OYSTER CRNA (NPI 1023593787) is an individual nurse anesthetist, certified registered in Mansfield, Ohio, licensed in Ohio (APRN.CRNA.019771) and active in the NPI registry since September 2018. She is affiliated with Ohiohealth Mansfield Hospital and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Group Practice 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
Shannon Marie Oyster Crna 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 Shannon Oyster reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mansfield, OH 44907
- Reassigned Medicare billing, Ohio enrollment
- 40 clinicians in this Medicare group
Columbus, OH 43213
- Reassigned Medicare billing, Ohio enrollment
- 3,314 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 5
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.
Ohiohealth Mansfield Hospital
Acute Care Hospitals · Mansfield, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 44907 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MANSFIELD, OH 44907
MANSFIELD, OH 44907
MANSFIELD, OH 44907
MANSFIELD, OH 44907
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 Shannon Oyster's NPI number?
The NPI number for Shannon Oyster is 1023593787. It was assigned to this individual provider in the NPPES registry on September 28, 2018.
Where is Shannon Oyster located?
Shannon Oyster practices at 799 Lexington Ave, Mansfield, OH 44907. The listed phone number is (419) 756-5133.
What is Shannon Oyster's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Shannon Oyster enrolled in Medicare?
Yes. Shannon Oyster 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 Shannon Oyster's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Oyster reassigns Medicare benefits to 2 organizations: Anesthesia Associates Of Mansfield, Inc (Mansfield, OH) and Ohiohealth Corporation (Columbus, OH). 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 Shannon Oyster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Shannon Oyster affiliated with any hospitals?
According to CMS data, Shannon Oyster is affiliated with Ohiohealth Mansfield Hospital.
When was this NPI record last updated?
The NPPES record for Shannon Oyster was last updated on January 15, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Shannon Marie Oyster, CRNA · NPI 1023593787
Nurse Anesthetist, Certified Registered physician in Mansfield, Ohio. Individual provider, active in the CMS NPPES registry since September 28, 2018.
## Identity
- **NPI:** 1023593787 (Entity type: Individual)
- **Enumerated:** September 28, 2018
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** APRN.CRNA.019771 (Ohio)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 799 LEXINGTON AVE, Mansfield, OH 44907-1906
- **Phone:** (419) 756-5133
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Anesthesia Associates Of Mansfield, Inc (NPI 1407947815, Mansfield, OH); Ohiohealth Corporation (NPI 1265627301, Columbus, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** January 15, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1023593787) · Data from the CMS NPPES public registry.