SEAN PATRICK CALLAHAN M.D.
NPI 1194811828
Family Medicine in Oak Harbor, OH
About Sean Patrick Callahan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SEAN PATRICK CALLAHAN M.D. (NPI 1194811828) is an individual family medicine provider in Oak Harbor, Ohio, licensed in Ohio (35-07-4846) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy St Vincent Medical Center, and is a graduate of University Of Toledo College Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Sean Patrick Callahan M.d. 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 Reassignment
Medicare enrollment records show Sean Callahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Port Clinton, OH 43452
- Reassigned Medicare billing, Ohio enrollment
- 13 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 14
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy St Vincent Medical Center
Acute Care Hospitals · Toledo, OHBay Park Community Hospital
Acute Care Hospitals · Oregon, OHMagruder Hospital
Critical Access Hospitals · Port Clinton, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 43449 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.
Referred Medical Equipment & Supplies CMS DME claims 9
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
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 Sean Callahan's NPI number?
The NPI number for Sean Callahan is 1194811828. It was assigned to this individual provider in the NPPES registry on October 4, 2006.
Where is Sean Callahan located?
Sean Callahan practices at 11697 W State Route 163, Oak Harbor, OH 43449. The listed phone number is (419) 898-0993.
What is Sean Callahan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Sean Callahan enrolled in Medicare?
Yes. Sean Callahan 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 organization bills Medicare for Sean Callahan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Callahan reassigns Medicare benefits to Magruder Medical Group Ltd (Port Clinton, OH). The 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 Sean Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sean Callahan accept?
Health plans from Anthem Blue Cross and Blue Shield, MedMutual and Paramount list Sean Callahan 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 Sean Callahan affiliated with any hospitals?
According to CMS data, Sean Callahan is affiliated with Mercy St Vincent Medical Center, Bay Park Community Hospital and Magruder Hospital.
When was this NPI record last updated?
The NPPES record for Sean Callahan was last updated on October 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.