NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1992339808 APRN
Verify on CMS → Tonia Williams, APRN
Registered Nurse 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 185,440 in Registered Nurse, 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
264
Medicare Part D claims · 153 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.3/100
▲ 7 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Tonia Williams, APRN reported a CMS MIPS final score of 90.3/100 - above the 83.5 national average - and filed 264 Medicare Part D claims in 2024.
- 90.3/100
- MIPS score · +7 vs avg
- 264
- Part D claims, 2024
- 95%
- generic prescribing
- ≥58th
- pct among measured MIPS (lower-bound band)
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.
Federal trust snapshot
What official records show about Tonia Williams, APRN
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1992339808), first enumerated 02/29/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 264 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 90.3/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1992339808 · Registered Nurse
NPI-10 · ENUM-RECENT · TAX-MEGA · MIPS-ABOVE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1992339808
- ENUM-RECENT 2020
- TAX-MEGA 185K Registered Nurse
- MIPS-ABOVE 90.3/100
- RX-LIGHT 264
- BOOK-LIGHT 1,837 in Oklahoma
- PHOTO-FINISH Kathleen Dipietro, F… · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Williams · this …
Williams · this provider
90.3 MIPS pts
- Rosemary Schaire…
Rosemary Schairer, NP
90.3 MIPS pts
- Kathleen Dipietr…
Kathleen Dipietro, FNP-C
90.3 MIPS pts
- Holly Cauthers, …
Holly Cauthers, DNP
90.3 MIPS pts
- Charles Roesel ·…
Charles Roesel
90.3 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Tonia Williams, APRN's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
90 ≥ 58th percentile 58% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Tonia Williams, APRN sits
This provider among registered nurse peers
Across the 3,271 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Tonia Williams, APRN writes more Part D claims than 44% of them and scores higher on MIPS quality than 61% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one registered nurse peer from a representative sample of 60; the gold marker is Tonia Williams, APRN. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Tonia Williams, APRN?
High performer (top quartile)Primary specialty
Registered Nurse
Medicare Part D claims
264 75% vs specialty avg
MIPS final score
90.3/100 6.8 pts vs avg
Specialty distribution in Oklahoma
How Registered Nurse compares to other specialties among Oklahoma providers
Medicare quality performance, MIPS
Tonia Williams, APRN's 2023 MIPS final score plotted against the Registered Nurse national average
- MIPS Final Score
- 90.3/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1992339808 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 02/29/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
90.2883
Final Score
Measured-score avg: 83.5
80.333
Quality
93.8504
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where Tonia Williams, 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.
Grady Memorial Hospital
★★☆☆☆ 2/5
Chickasha, OK
Acute Care Hospitals
CMS CCN: 370054
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Tonia Williams, APRN - brand share 5.0%
Registered Nurse average
5% brand-name claims vs 95% generic, on 264 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
264
Total Claims
$3K
Total Drug Cost
153
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 265.1
- Total Day Supply
- 2,792
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $366
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 120
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 1.10
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 24, 65-74: 61, 75-84: 54, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Tonia Williams, APRN prescribes most
Top Medicare Part D drugs by claim count, 2024
- Methylprednisolone
Methylprednisolone
46 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
29 claims
- Prednisone
Prednisone
27 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
23 claims
- Nitrofurantoin Mon… 17
Nitrofurantoin Mono-Macro
17 claims
- Amoxicillin 14
Amoxicillin
14 claims
- Clindamycin Hcl 14
Clindamycin Hcl
14 claims
- Doxycycline Hyclate 14
Doxycycline Hyclate
14 claims
| Drug | Claims |
|---|---|
| Methylprednisolone | 46 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 29 |
| Prednisone | 27 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 23 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 17 |
| Amoxicillin | 14 |
| Clindamycin Hcl | 14 |
| Doxycycline Hyclate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Tonia Williams, APRN fits within the Registered Nurse landscape nationally.
185,440
Registered Nurse Providers in US
56
States with Registered Nurse
1,063
Avg Claims per Provider
Tonia Williams, APRN's 264 claims are below the specialty average of 1,063.
Nationwide Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Williams, both outside Oklahoma so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (90.3 here).
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Registered Nurse Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Williams.
One of 1,837 Registered Nurse providers enrolled in Oklahoma, 5 are shown here.
Jennifer Abad
BSN, RN
Tulsa, OK
Jalelah Abdul-Raheem
RN
Oklahoma City, OK
Dr. Melissa Abercrombie
DNP, APRN, PMHNP-BC
Norman, OK
Lillian Abunaw
RN
Oklahoma City, OK
Lydia Achiri-Ndalle
Oklahoma City, OK
Compare Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tonia Williams, APRN's specialty? ▼
Tonia Williams, APRN specializes in Registered Nurse and practices in Oklahoma City, Oklahoma. Credentials: APRN.
How much does Tonia Williams, APRN prescribe under Medicare Part D? ▼
In 2024, Tonia Williams, APRN wrote 264 Medicare Part D claims totaling $3K in drug costs for 153 beneficiaries.
What is Tonia Williams, APRN's Medicare quality score? ▼
Tonia Williams, APRN has a CMS MIPS Final Score of 90.3/100 (Quality: 80.3, Cost: 93.9). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tonia Williams, APRN located? ▼
Tonia Williams, APRN is located at 2100 SW 119TH ST, Oklahoma City, OK, 73170. Phone: (405) 691-1041.
What is Tonia Williams, APRN's NPI number? ▼
Tonia Williams, APRN's National Provider Identifier (NPI) is 1992339808, issued on 02/29/2020.
Does Tonia Williams, APRN prescribe more brand-name or generic drugs? ▼
Tonia Williams, APRN's prescribing is 5% brand-name and 95% generic drugs by claim count, with $366 in brand drug costs.
How many Registered Nurse providers are there in the US? ▼
There are 185,440 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,063 Medicare Part D claims per year.
What drugs does Tonia Williams, APRN prescribe most often? ▼
Based on 2024 Medicare Part D data, Tonia Williams, APRN's most frequently prescribed drugs include Methylprednisolone, Amoxicillin-Clavulanate Potass, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tonia Williams, APRN accept Medicare? ▼
Tonia Williams, APRN appears in CMS Medicare data with 264 Part D claims and 153 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tonia Williams, APRN's credentials? ▼
Tonia Williams, APRN's NPI is 1992339808 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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
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 August 2026.