John Marlar, DO
NPI 1316923576 · Emergency Medical Services (Emergency Medicine) Physician · Holdenville, OK
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marlar, DO is a Emergency Medical Services (Emergency Medicine) Physician provider in Holdenville, OK (NPI 1316923576).
Provider details
- NPI number
- 1316923576
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 3037 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 83 | 81 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 39 | 39 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 32 | 32 |
| Ondansetronbrand: Ondansetron Odt | 28 | 28 |
| Azithromycin | 26 | 25 |
| Tramadol Hcl | 26 | 25 |
| Ibuprofen | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-20
- Last updated
- 2021-08-13
- Certified
- 2021-08-13
Frequently asked questions
- What is John Marlar's NPI number?
- John Marlar's National Provider Identifier (NPI) is 1316923576, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marlar's specialty?
- John Marlar is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is John Marlar located?
- John Marlar's practice location on file with NPPES is 100 Mcdougal Dr, Holdenville, OK 74848-2899.
- What is John Marlar's phone number?
- The practice phone number listed in the NPPES registry for John Marlar is (405) 379-4200.
- Does John Marlar accept Medicare?
- John Marlar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marlar's NPI active?
- Yes — John Marlar's NPI (1316923576) is active in the NPPES registry as of the last update on 2021-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.