NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1912999517 C.R.N.P.
Verify on CMS → Sonya Williams, C.R.N.P.
Family Nurse Practitioner in Arnold, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
2K
Medicare Part D claims · 326 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
89.4/100
▲ 6 pts above national avg 83.5 · Exceptional
Industry payments
$367.5
20 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Sonya Williams, C.R.N.P. reported a CMS MIPS final score of 89.4/100 - above the 83.5 national average - and filed 2,304 Medicare Part D claims in 2023.
- 89.4/100
- MIPS score · +6 vs avg
- 2K
- Part D claims, 2023
- 91%
- generic prescribing
- $367.5
- 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.
Sonya Williams, C.R.N.P.'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.
89 ≥ 56th percentile 56% 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 Sonya Williams, C.R.N.P. sits
This provider among family nurse practitioner peers
Across the 26,556 family nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Sonya Williams, C.R.N.P. writes more Part D claims than 84% of them and scores higher on MIPS quality than 57% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one family nurse practitioner peer from a representative sample of 60; the gold marker is Sonya Williams, C.R.N.P.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Sonya Williams, C.R.N.P.?
High performer (top quartile)Primary specialty
Family Nurse Practitioner
Medicare Part D claims
2,304 89% vs specialty avg
MIPS final score
89.4/100 5.9 pts vs avg
Specialty distribution in Maryland
How Family Nurse Practitioner compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Sonya Williams, C.R.N.P.'s 2023 MIPS final score plotted against the Family Nurse Practitioner national average
- MIPS Final Score
- 89.4/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Family Nurse Practitioner) - 89.4/100 vs national avg 83.5
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).
Sonya Williams, C.R.N.P. appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding C.R.N.P. credentials at 1509 RITCHIE HWY, Arnold, MD, 21012, with a listed phone of (410) 757-7600. NPI 1912999517 was issued on 08/19/2005.
Medicare Part D records for calendar year 2023 show 2,304 prescription claims written by this provider, covering 326 Medicare beneficiaries and totaling roughly $151K in drug spend, split 9% brand-name and 91% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 89.4/100 for the 2023 performance year (Quality 88.4, Cost 76.4), compared with the 83.5 average among clinicians with a measured score.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1912999517 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | C.R.N.P. |
| Gender | Female |
| NPI Issued | 08/19/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
89.4255
Final Score
Measured-score avg: 83.5
88.3888
Quality
76.3627
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Sonya Williams, C.R.N.P. 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.
Maryland Primary Care Physicians, LLC
Arnold, MD
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 Sonya Williams, C.R.N.P.. Source: openpaymentsdata.cms.gov.
Total received
$368
Largest payer
Novo Nordisk 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.
Brand vs generic prescribing mix · Generic-heavy
Sonya Williams, C.R.N.P. - brand share 9.0%
Family Nurse Practitioner average
9% brand-name claims vs 91% generic, on 2,304 2023 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 2023.
2,304
Total Claims
$151K
Total Drug Cost
326
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,229
- Total Day Supply
- 150,615
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $97K
- Generic Drug Cost
- $54K
- Antibiotic Claims
- 100
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 0.85
- Gender Split
- 72% female / 28% male
- Age Distribution
- <65: 17, 65-74: 172, 75-84: 106, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sonya Williams, C.R.N.P. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
168 claims
- Amlodipine Besylate
Amlodipine Besylate
123 claims
- Levothyroxine Sodium
Levothyroxine Sodium
118 claims
- Metoprolol Succinate
Metoprolol Succinate
91 claims
- Lisinopril
Lisinopril
83 claims
- Pravastatin Sodium 66
Pravastatin Sodium
66 claims
- Telmisartan 65
Telmisartan
65 claims
- Albuterol Sulfate … 54
Albuterol Sulfate Hfa
54 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 168 |
| Amlodipine Besylate | 123 |
| Levothyroxine Sodium | 118 |
| Metoprolol Succinate | 91 |
| Lisinopril | 83 |
| Pravastatin Sodium | 66 |
| Telmisartan | 65 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 54 |
| Rosuvastatin Calcium | 51 |
| Hydrochlorothiazide | 47 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Sonya Williams, C.R.N.P. fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Sonya Williams, C.R.N.P.'s 2,304 claims are above the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Williams.
Kanisha Aaron
Owings Mills, MD
Dr. Nicole Aaron
CRNP
Queenstown, MD
Dr. Naomi Abaga
CRNP
Baltimore, MD
Dr. Kristen Abbott
CRNP
Berlin, MD
Dr. Mark Abbott
FNP
Elkridge, MD
Compare Family 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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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 Sonya Williams, C.R.N.P.'s specialty? ▼
Sonya Williams, C.R.N.P. specializes in Family Nurse Practitioner and practices in Arnold, Maryland. Credentials: C.R.N.P..
How much does Sonya Williams, C.R.N.P. prescribe under Medicare Part D? ▼
In 2023, Sonya Williams, C.R.N.P. wrote 2,304 Medicare Part D claims totaling $151K in drug costs for 326 beneficiaries.
What is Sonya Williams, C.R.N.P.'s Medicare quality score? ▼
Sonya Williams, C.R.N.P. has a CMS MIPS Final Score of 89.4/100 (Quality: 88.4, Cost: 76.4). 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 Sonya Williams, C.R.N.P. located? ▼
Sonya Williams, C.R.N.P. is located at 1509 RITCHIE HWY, Arnold, MD, 21012. Phone: (410) 757-7600.
What is Sonya Williams, C.R.N.P.'s NPI number? ▼
Sonya Williams, C.R.N.P.'s National Provider Identifier (NPI) is 1912999517, issued on 08/19/2005.
Does Sonya Williams, C.R.N.P. prescribe more brand-name or generic drugs? ▼
Sonya Williams, C.R.N.P.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $97K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Sonya Williams, C.R.N.P. prescribe most often? ▼
Based on 2023 Medicare Part D data, Sonya Williams, C.R.N.P.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sonya Williams, C.R.N.P. accept Medicare? ▼
Sonya Williams, C.R.N.P. appears in CMS Medicare data with 2,304 Part D claims and 326 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sonya Williams, C.R.N.P.'s credentials? ▼
Sonya Williams, C.R.N.P.'s NPI is 1912999517 with credentials C.R.N.P.. 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.
- 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 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
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.