MRS. GWYNETH LEIGH HOLDERBY DNP
NPI 1124447305
Nurse Practitioner - Family in Alva, OK
About Mrs. Gwyneth Leigh Holderby Dnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. GWYNETH LEIGH HOLDERBY DNP (NPI 1124447305) is an individual family provider in Alva, Oklahoma, licensed in Oklahoma (96130) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with St Mary's Regional Medical Center, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mrs. Gwyneth Leigh Holderby Dnp 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.
Areas of Expertise CMS Part B claims
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Mary's Regional Medical Center
Acute Care Hospitals · Enid, OKShare Medical Center
Critical Access Hospitals · Alva, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73717 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ALVA, OK 73717
ALVA, OK 73717
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 Gwyneth Holderby's NPI number?
The NPI number for Gwyneth Holderby is 1124447305. It was assigned to this individual provider in the NPPES registry on April 15, 2014.
Where is Gwyneth Holderby located?
Gwyneth Holderby practices at 709 Oklahoma Blvd, Alva, OK 73717. The listed phone number is (580) 327-8434.
What is Gwyneth Holderby's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Gwyneth Holderby enrolled in Medicare?
Yes. Gwyneth Holderby 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.
What insurance does Gwyneth Holderby accept?
Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Gwyneth Holderby 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 Gwyneth Holderby affiliated with any hospitals?
According to CMS data, Gwyneth Holderby is affiliated with St Mary's Regional Medical Center and Share Medical Center.
When was this NPI record last updated?
The NPPES record for Gwyneth Holderby was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days 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.
# Mrs. Gwyneth Leigh Holderby, DNP · NPI 1124447305
Family physician in Alva, Oklahoma. Individual provider, active in the CMS NPPES registry since April 15, 2014.
## Identity
- **NPI:** 1124447305 (Entity type: Individual)
- **Enumerated:** April 15, 2014
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 96130 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 709 OKLAHOMA BLVD, Alva, OK 73717-2749
- **Phone:** (580) 327-8434
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** July 21, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1124447305) · Data from the CMS NPPES public registry.