MS. MARY ELLEN ROBERTSON CRNA
NPI 1023083110
Nurse Anesthetist, Certified Registered in Clarion, PA
About Ms. Mary Ellen Robertson Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY ELLEN ROBERTSON CRNA (NPI 1023083110) is an individual nurse anesthetist, certified registered in Clarion, Pennsylvania, licensed in Pennsylvania (RN296245L) and active in the NPI registry since February 2006. She is affiliated with Clarion Hospital and is a graduate of Other (1997).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 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
Ms. Mary Ellen Robertson 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
4Medicare enrollment records show Mary Robertson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Clarion, PA 16214
- Reassigned Medicare billing, Pennsylvania enrollment
- 6 clinicians in this Medicare group
Franklin, PA 16323
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 clinicians in this Medicare group
Kane, PA 16735
- Reassigned Medicare billing, Pennsylvania enrollment
- 44 clinicians in this Medicare group
Saint Marys, PA 15857
- Reassigned Medicare billing, Pennsylvania enrollment
- 57 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.
Clarion Hospital
Acute Care Hospitals · Clarion, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 16214 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Robertson's NPI number?
The NPI number for Mary Robertson is 1023083110. It was assigned to this individual provider in the NPPES registry on February 22, 2006. The provider is also known as Ms. Mary Ellen Sichak Crna.
Where is Mary Robertson located?
Mary Robertson practices at 1 Hospital Dr, Clarion, PA 16214. The listed phone number is (814) 226-9500.
What is Mary Robertson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mary Robertson enrolled in Medicare?
Yes. Mary Robertson 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 Mary Robertson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Robertson reassigns Medicare benefits to 4 organizations: Clarion Hospital (Clarion, PA), University Of Pittsburgh Physicians (Franklin, PA), Upmc Kane (Kane, PA) and Elk Regional Health Center (Saint Marys, PA). 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 Mary Robertson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Robertson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Mary Robertson 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 Mary Robertson affiliated with any hospitals?
According to CMS data, Mary Robertson is affiliated with Clarion Hospital.
When was this NPI record last updated?
The NPPES record for Mary Robertson was last updated on December 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Ms. Mary Ellen Robertson, CRNA · NPI 1023083110
Nurse Anesthetist, Certified Registered physician in Clarion, Pennsylvania. Individual provider, active in the CMS NPPES registry since February 22, 2006.
## Identity
- **NPI:** 1023083110 (Entity type: Individual)
- **Enumerated:** February 22, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN296245L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 HOSPITAL DR, Clarion, PA 16214-8501
- **Phone:** (814) 226-9500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Clarion Hospital (NPI 1023049368, Clarion, PA); University Of Pittsburgh Physicians (NPI 1619381456, Franklin, PA); Upmc Kane (NPI 1861478307, Kane, PA); Elk Regional Health Center (NPI 1326427196, Saint Marys, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** December 9, 2025
- **Other identifiers:** Medicaid 001726037 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1023083110) · Data from the CMS NPPES public registry.