DR. MARK R FOX M.D.
NPI 1831147560
Internal Medicine in Findlay, OH
About Dr. Mark R Fox M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK R FOX M.D. (NPI 1831147560) is an individual internal medicine provider in Findlay, Ohio, licensed in Ohio (35.071711) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Blanchard Valley Hospital, and is a graduate of Michigan State University College Of Human Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Dr. Mark R Fox 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 Reassignments
3Medicare enrollment records show Mark Fox reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Findlay, OH 45840
- Reassigned Medicare billing, Ohio enrollment
- 23 clinicians in this Medicare group
Findlay, OH 45840
- Reassigned Medicare billing, Ohio enrollment
- 109 clinicians in this Medicare group
Sandusky, OH 44870
- Reassigned Medicare billing, Ohio enrollment
- 247 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 24
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.
Blanchard Valley Hospital
Acute Care Hospitals · Findlay, OHFostoria Community Hospital
Critical Access Hospitals · Fostoria, OHBluffton Hospital
Critical Access Hospitals · Bluffton, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45840 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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 13
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FINDLAY, OH 45840
FINDLAY, OH 45840
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 Mark Fox's NPI number?
The NPI number for Mark Fox is 1831147560. It was assigned to this individual provider in the NPPES registry on May 5, 2006.
Where is Mark Fox located?
Mark Fox practices at 200 W Pearl St, Findlay, OH 45840. The listed phone number is (419) 424-0380.
What is Mark Fox's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Fox enrolled in Medicare?
Yes. Mark Fox 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 Mark Fox's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fox reassigns Medicare benefits to 3 organizations: Blanchard Valley Medical Associates, Inc. (Findlay, OH), NW Ohio Hospital Medicine Physicians LLC (Findlay, OH) and Northern Ohio Medical Specialists LLC (Sandusky, 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 Mark Fox's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Fox accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 4 other insurers list Mark Fox 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 Mark Fox affiliated with any hospitals?
According to CMS data, Mark Fox is affiliated with Blanchard Valley Hospital, Fostoria Community Hospital and Bluffton Hospital.
When was this NPI record last updated?
The NPPES record for Mark Fox was last updated on August 23, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.