NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1821155490 APRN-CNP
Verify on CMS → Christiana Williams, APRN-CNP
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 87,700 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
957
Medicare Part D claims · 47 beneficiaries · Nurse Practitioner avg: 1K
Industry payments
$52.18
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Christiana Williams, APRN-CNP filed 957 Medicare Part D claims in 2023 as a Nurse Practitioner in Oklahoma City, Oklahoma.
- 957
- Part D claims, 2023
- $52.18
- 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.
Christiana Williams, APRN-CNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
957 Top 25% higher than 75% 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 Christiana Williams, APRN-CNP?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
957 12% 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).
Christiana Williams, APRN-CNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding APRN-CNP credentials at 1024 SW 44TH ST, Oklahoma City, OK, 73109, with a listed phone of (405) 702-9050. NPI 1821155490 was issued on 01/03/2007.
Medicare Part D records for calendar year 2023 show 957 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $119K in drug spend.
Nurse Practitioner is a high-volume specialty nationwide, with 87,700 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 | 1821155490 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | APRN-CNP |
| Gender | Female |
| NPI Issued | 01/03/2007 |
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 Christiana Williams, APRN-CNP. Source: openpaymentsdata.cms.gov.
Total received
$52
Largest payer
ABBVIE 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.
957
Total Claims
$119K
Total Drug Cost
47
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,491
- Total Day Supply
- 38,796
- Generic Drug Cost
- $17K
- Antibiotic Claims
- 74
Patient Demographics
- Average Patient Age
- 59.8 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 20, 65-74: 23, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christiana Williams, APRN-CNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
59 claims
- Gabapentin
Gabapentin
47 claims
- Levothyroxine Sodium
Levothyroxine Sodium
47 claims
- Metformin Hcl
Metformin Hcl
44 claims
- Ibuprofen
Ibuprofen
40 claims
- Omeprazole
Omeprazole
32 claims
- Hydrochlorothiazide
Hydrochlorothiazide
27 claims
- Prednisone
Prednisone
27 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 59 |
| Gabapentin | 47 |
| Levothyroxine Sodium | 47 |
| Metformin Hcl | 44 |
| Ibuprofen | 40 |
| Omeprazole | 32 |
| Hydrochlorothiazide | 27 |
| Prednisone | 27 |
| Azithromycin | 25 |
| Hydroxyzine Hcl | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Christiana Williams, APRN-CNP fits within the Nurse Practitioner landscape nationally.
87,700
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Christiana Williams, APRN-CNP's 957 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 Williams.
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.
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Frequently Asked Questions
What is Christiana Williams, APRN-CNP's specialty? ▼
Christiana Williams, APRN-CNP specializes in Nurse Practitioner and practices in Oklahoma City, Oklahoma. Credentials: APRN-CNP.
How much does Christiana Williams, APRN-CNP prescribe under Medicare Part D? ▼
In 2023, Christiana Williams, APRN-CNP wrote 957 Medicare Part D claims totaling $119K in drug costs for 47 beneficiaries.
Where is Christiana Williams, APRN-CNP located? ▼
Christiana Williams, APRN-CNP is located at 1024 SW 44TH ST, Oklahoma City, OK, 73109. Phone: (405) 702-9050.
What is Christiana Williams, APRN-CNP's NPI number? ▼
Christiana Williams, APRN-CNP's National Provider Identifier (NPI) is 1821155490, issued on 01/03/2007.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,700 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 Christiana Williams, APRN-CNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Christiana Williams, APRN-CNP's most frequently prescribed drugs include Albuterol Sulfate Hfa, Gabapentin, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christiana Williams, APRN-CNP accept Medicare? ▼
Christiana Williams, APRN-CNP appears in CMS Medicare data with 957 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christiana Williams, APRN-CNP's credentials? ▼
Christiana Williams, APRN-CNP's NPI is 1821155490 with credentials APRN-CNP. 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.