Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mrs. Gwyneth Leigh Holderby, DNP

Individual provider Family Nurse Practitioner · NPI 1124447305

Mrs. Gwyneth Leigh Holderby, DNP is a Nurse Practitioner in Alva, Oklahoma. Qualified in 2014, 12 years ago. Practices with Alva Hospital Authority, a 14-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
12
Licensed in
OK
In the registry since
2014
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.

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Practice location Address checks out

709 Oklahoma Blvd
Alva, OK 73717-2749
Phone: (580) 327-8434
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 96130 (OK)

Record details

NPI number1124447305
Entity typeIndividual (Type 1)
GenderFemale
Credentials DNP
Sole proprietorNo
NPI enumeratedApril 15, 2014
Last updated in NPPESJuly 21, 2026
Certification dateJuly 21, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Alva Hospital Authority — 14 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Alva