NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1699151142 APRN
Verify on CMS → Gayla Barker, APRN
Nurse Practitioner in Oklahoma City, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 87,227 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
136
Medicare Part D claims · 73 beneficiaries · Nurse Practitioner avg: 1K
Industry payments
$310.27
18 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gayla Barker, APRN filed 136 Medicare Part D claims in 2023 as a Nurse Practitioner in Oklahoma City, Oklahoma.
- 136
- Part D claims, 2023
- $310.27
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Gayla Barker, APRN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
136 35th percentile higher than 35% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Gayla Barker, APRN?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
136 87% vs specialty avg
Specialty distribution in Oklahoma
How Nurse Practitioner compares to other specialties among Oklahoma providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Gayla Barker, APRN appears in the CMS NPPES registry as a Nurse Practitioner provider holding APRN credentials at 14901 N PENNSYLVANIA AVE, Oklahoma City, OK, 73134, with a listed phone of (405) 486-1372. NPI 1699151142 was issued on 08/07/2015.
Medicare Part D records for calendar year 2023 show 136 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $13K in drug spend.
Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1699151142 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 08/07/2015 |
Hospital and facility affiliations
Facilities where Gayla Barker, APRN bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Mercy Clinic Oklahoma Communities
Ada, OK
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gayla Barker, APRN. Source: openpaymentsdata.cms.gov.
Total received
$310
Largest payer
Paratek Pharmaceuticals, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
136
Total Claims
$13K
Total Drug Cost
73
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 136
- Total Day Supply
- 1,229
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 117
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 2.24
- Gender Split
- 49% female / 51% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gayla Barker, APRN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Doxycycline Hyclate
Doxycycline Hyclate
34 claims
- Clindamycin Hcl
Clindamycin Hcl
33 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
26 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
14 claims
| Drug | Claims |
|---|---|
| Doxycycline Hyclate | 34 |
| Clindamycin Hcl | 33 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 26 |
| Ciprofloxacin Hcl | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Gayla Barker, APRN fits within the Nurse Practitioner landscape nationally.
87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Gayla Barker, APRN's 136 claims are below the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Barker.
Dr. Kimberly Abernathy
APRN-CNP
Norman, OK
Dr. Linda Adams
APRN-CNP
Tulsa, OK
Dr. Kacy Aderhold
APRN-CNS
Oklahoma City, OK
Modupe Adesola
Fort Sill, OK
Dr. Marjan Adib-Yazdi
MSN, ANP-C
Tulsa, OK
Compare Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Oklahoma medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oklahoma
Frequently Asked Questions
What is Gayla Barker, APRN's specialty? ▼
Gayla Barker, APRN specializes in Nurse Practitioner and practices in Oklahoma City, Oklahoma. Credentials: APRN.
How much does Gayla Barker, APRN prescribe under Medicare Part D? ▼
In 2023, Gayla Barker, APRN wrote 136 Medicare Part D claims totaling $13K in drug costs for 73 beneficiaries.
Where is Gayla Barker, APRN located? ▼
Gayla Barker, APRN is located at 14901 N PENNSYLVANIA AVE, Oklahoma City, OK, 73134. Phone: (405) 486-1372.
What is Gayla Barker, APRN's NPI number? ▼
Gayla Barker, APRN's National Provider Identifier (NPI) is 1699151142, issued on 08/07/2015.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Gayla Barker, APRN prescribe most often? ▼
Based on 2023 Medicare Part D data, Gayla Barker, APRN's most frequently prescribed drugs include Doxycycline Hyclate, Clindamycin Hcl, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gayla Barker, APRN accept Medicare? ▼
Gayla Barker, APRN appears in CMS Medicare data with 136 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gayla Barker, APRN's credentials? ▼
Gayla Barker, APRN's NPI is 1699151142 with credentials APRN. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.