MARK GRIMES M.D.
NPI 1710903646
Emergency Medicine in Ashland, OH
About Mark Grimes M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK GRIMES M.D. (NPI 1710903646) is an individual emergency medicine provider in Ashland, Ohio, licensed in Ohio (35-080305) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Ohiohealth Mansfield Hospital, and is a graduate of Wright State University Boonshoft School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Mark Grimes 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
7Medicare enrollment records show Mark Grimes reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mansfield, OH 44903
- Reassigned Medicare billing, Ohio enrollment
- 125 clinicians in this Medicare group
Parma, OH 44129
- Reassigned Medicare billing, Ohio enrollment
- 237 clinicians in this Medicare group
Austintown, OH 44515
- Reassigned Medicare billing, Ohio enrollment
- 146 clinicians in this Medicare group
Youngstown, OH 44512
- Reassigned Medicare billing, Ohio enrollment
- 146 clinicians in this Medicare group
Youngstown, OH 44504
- Reassigned Medicare billing, Ohio enrollment
- 129 clinicians in this Medicare group
Seaman, OH 45679
- Reassigned Medicare billing, Ohio enrollment
- 894 clinicians in this Medicare group
- Reassigned Medicare billing, Ohio enrollment
- 179 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 4
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 44805 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.
ASHLAND, OH 44805
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 Grimes's NPI number?
The NPI number for Mark Grimes is 1710903646. It was assigned to this individual provider in the NPPES registry on July 14, 2006.
Where is Mark Grimes located?
Mark Grimes practices at 1025 Center St, Ashland, OH 44805. The listed phone number is (419) 289-0491.
What is Mark Grimes's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Grimes enrolled in Medicare?
Yes. Mark Grimes 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 Grimes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Grimes reassigns Medicare benefits to 7 organizations: Mid-Ohio Emergency Group, LLC (Mansfield, OH), Magis Emergency Medicine LLC (Parma, OH), Mves Austintown LLC (Austintown, OH), Mves Boardman LLC (Youngstown, OH), Mahoning Valley Emergency Specialists LLC (Youngstown, OH) and 2 more organizations, listed in the Medicare section above. 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 Grimes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Grimes accept?
Health plans from Oscar Health, Oscar Health Maintenance Organization of Florida and Oscar Insurance Company list Mark Grimes 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 Grimes affiliated with any hospitals?
According to CMS data, Mark Grimes is affiliated with Ohiohealth Mansfield Hospital.
When was this NPI record last updated?
The NPPES record for Mark Grimes was last updated on February 20, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Mark Grimes, M.D. · NPI 1710903646
Emergency Medicine physician in Ashland, Ohio. Individual provider, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1710903646 (Entity type: Individual)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 35-080305 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 1025 CENTER ST, Ashland, OH 44805-4011
- **Phone:** (419) 289-0491
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Mid-Ohio Emergency Group, LLC (NPI 1881164010, Mansfield, OH); Magis Emergency Medicine LLC (NPI 1801287511, Parma, OH); Mves Austintown LLC (NPI 1972555944, Austintown, OH); Mves Boardman LLC (NPI 1205888237, Youngstown, OH); Mahoning Valley Emergency Specialists LLC (NPI 1003869652, Youngstown, OH); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wright State University Boonshoft School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** February 20, 2008
- **Other identifiers:** Medicare UPIN H55922; Medicaid 2313651 (OH); Medicare PIN GR4069695 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1710903646) · Data from the CMS NPPES public registry.