JOHN B MARLAR DO
NPI 1316923576
Emergency Medicine - Emergency Medical Services in Holdenville, OK
About John B Marlar Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN B MARLAR DO (NPI 1316923576) is an individual emergency medical services provider in Holdenville, Oklahoma, licensed in Oklahoma (3037) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Holdenville General Hospital, and is a graduate of Other (1992).
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
John B Marlar Do 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 John Marlar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Holdenville, OK 74848
- Reassigned Medicare billing, Oklahoma enrollment
- 10 clinicians in this Medicare group
Ardmore, OK 73401
- Reassigned Medicare billing, Oklahoma enrollment
- 46 clinicians in this Medicare group
Hugo, OK 74743
- Reassigned Medicare billing, Oklahoma enrollment
- 29 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holdenville General Hospital
Critical Access Hospitals · Holdenville, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74848 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
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.
HOLDENVILLE, OK 74848
HOLDENVILLE, OK 74848
HOLDENVILLE, OK 74848
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 John Marlar's NPI number?
The NPI number for John Marlar is 1316923576. It was assigned to this individual provider in the NPPES registry on December 20, 2005.
Where is John Marlar located?
John Marlar practices at 100 Mcdougal Dr, Holdenville, OK 74848. The listed phone number is (405) 379-4200.
What is John Marlar's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is John Marlar enrolled in Medicare?
Yes. John Marlar 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 John Marlar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Marlar reassigns Medicare benefits to 3 organizations: Holdenville Hospital Authority (Holdenville, OK), Exceptional Physicians Group Ardmore Hospital PLLC (Ardmore, OK) and Choctaw County City Of Hugo Hospital Authority (Hugo, OK). 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 John Marlar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Marlar accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list John Marlar 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 John Marlar affiliated with any hospitals?
According to CMS data, John Marlar is affiliated with Holdenville General Hospital.
When was this NPI record last updated?
The NPPES record for John Marlar was last updated on August 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# John B Marlar, DO · NPI 1316923576
Emergency Medical Services physician in Holdenville, Oklahoma. Individual provider, active in the CMS NPPES registry since December 20, 2005.
## Identity
- **NPI:** 1316923576 (Entity type: Individual)
- **Enumerated:** December 20, 2005
- **Primary specialty:** Emergency Medicine - Emergency Medical Services · taxonomy 207PE0004X
- **State license:** 3037 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 MCDOUGAL DR, Holdenville, OK 74848-2899
- **Phone:** (405) 379-4200
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Holdenville Hospital Authority (NPI 1265851455, Holdenville, OK); Exceptional Physicians Group Ardmore Hospital PLLC (NPI 1588427462, Ardmore, OK); Choctaw County City Of Hugo Hospital Authority (NPI 1881689289, Hugo, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1992
## Record status
- **NPPES last updated:** August 13, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1316923576) · Data from the CMS NPPES public registry.