ARTHUR DINKINS GRIMES MD
NPI 1669828596
Surgery - Surgical Critical Care in Oklahoma City, OK
About Arthur Dinkins Grimes Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARTHUR DINKINS GRIMES MD (NPI 1669828596) is an individual surgical critical care provider in Oklahoma City, Oklahoma, licensed in Oklahoma (32289) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Oklahoma City, Inc, and maintains a secondary practice location in Oklahoma City.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Arthur Dinkins Grimes 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 Reassignment
Medicare enrollment records show Arthur Grimes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 1,795 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 7
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Oklahoma City, Inc
Acute Care Hospitals · Oklahoma City, OKMercy Hospital Ada
Acute Care Hospitals · Ada, OKDuncan Regional Hospital, Inc
Acute Care Hospitals · Duncan, OKO U Medical Center
Acute Care Hospitals · Oklahoma City, OKMedicare 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 3
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 Arthur Grimes's NPI number?
The NPI number for Arthur Grimes is 1669828596. It was assigned to this individual provider in the NPPES registry on May 10, 2016.
Where is Arthur Grimes located?
Arthur Grimes practices at 800 Stanton L Young Blvd # 9000, Oklahoma City, OK 73104. The listed phone number is (405) 271-7912.
What is Arthur Grimes's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Arthur Grimes enrolled in Medicare?
Yes. Arthur 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 organization bills Medicare for Arthur Grimes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arthur Grimes reassigns Medicare benefits to Ou Health Partners, Inc (Oklahoma City, OK). 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 Arthur Grimes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Arthur Grimes accept?
Health plans from AmeriHealth Caritas Next, Blue Cross and Blue Shield of Oklahoma and Mending Health list Arthur 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 Arthur Grimes affiliated with any hospitals?
According to CMS data, Arthur Grimes is affiliated with Mercy Hospital Oklahoma City, Inc, Mercy Hospital Ada, Duncan Regional Hospital, Inc and O U Medical Center.
When was this NPI record last updated?
The NPPES record for Arthur Grimes was last updated on February 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Arthur Dinkins Grimes, MD · NPI 1669828596
Surgical Critical Care physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since May 10, 2016.
## Identity
- **NPI:** 1669828596 (Entity type: Individual)
- **Enumerated:** May 10, 2016
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** 32289 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 STANTON L YOUNG BLVD # 9000, Oklahoma City, OK 73104-5018
- **Phone:** (405) 271-7912
## 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:** Ou Health Partners, Inc (NPI 1528642642, Oklahoma City, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In Shreveport, class of 2016
## Record status
- **NPPES last updated:** February 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1669828596) · Data from the CMS NPPES public registry.