SIERRA ASHLEY HAJDU MD
NPI 1891435335
Emergency Medicine in Cincinnati, OH
About Sierra Ashley Hajdu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIERRA ASHLEY HAJDU MD (NPI 1891435335) is an individual emergency medicine provider in Cincinnati, Ohio, licensed in Ohio (35.152454) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, is affiliated with University Of Cincinnati Medical Center, Llc, and is a graduate of University Of Cincinnati College Of Medicine (2022).
NPPES Registry Identity
Specialties & Licenses
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
Sierra Ashley Hajdu 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
2Medicare enrollment records show Sierra Hajdu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cincinnati, OH 45219
- Reassigned Medicare billing, Ohio enrollment
- 2,038 clinicians in this Medicare group
Montgomery, OH 45242
- Reassigned Medicare billing, Ohio enrollment
- 119 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Cincinnati Medical Center, LLC
Acute Care Hospitals · Cincinnati, OHMccullough-Hyde Memorial Hospital
Acute Care Hospitals · Oxford, OHWest Chester Hospital
Acute Care Hospitals · West Chester, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45219 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.
CINCINNATI, OH 45219
CINCINNATI, OH 45219
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 Sierra Hajdu's NPI number?
The NPI number for Sierra Hajdu is 1891435335. It was assigned to this individual provider in the NPPES registry on March 31, 2022.
Where is Sierra Hajdu located?
Sierra Hajdu practices at 3188 Bellevue Ave, Cincinnati, OH 45219. The listed phone number is (513) 558-5281.
What is Sierra Hajdu's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Sierra Hajdu enrolled in Medicare?
Yes. Sierra Hajdu 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 Sierra Hajdu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sierra Hajdu reassigns Medicare benefits to 2 organizations: University Of Cincinnati Physicians Company, LLC (Cincinnati, OH) and Qualified Emergency Specialists Inc (Montgomery, 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 Sierra Hajdu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sierra Hajdu accept?
Health plans from CareSource and Oscar Health Insurance list Sierra Hajdu 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 Sierra Hajdu affiliated with any hospitals?
According to CMS data, Sierra Hajdu is affiliated with University Of Cincinnati Medical Center, LLC, Mccullough-Hyde Memorial Hospital and West Chester Hospital.
When was this NPI record last updated?
The NPPES record for Sierra Hajdu was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Sierra Ashley Hajdu, MD · NPI 1891435335
Emergency Medicine physician in Cincinnati, Ohio. Individual provider, active in the CMS NPPES registry since March 31, 2022.
## Identity
- **NPI:** 1891435335 (Entity type: Individual)
- **Enumerated:** March 31, 2022
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 35.152454 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 3188 BELLEVUE AVE, Cincinnati, OH 45219-2369
- **Phone:** (513) 558-5281
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Cincinnati Physicians Company, LLC (NPI 1801840434, Cincinnati, OH); Qualified Emergency Specialists Inc (NPI 1700872728, Montgomery, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Cincinnati College Of Medicine, class of 2022
## Record status
- **NPPES last updated:** June 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891435335) · Data from the CMS NPPES public registry.