NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1013457969 FNP
Verify on CMS → Kori Williams, FNP
Primary Care Nurse Practitioner in Bakersfield, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,138 in Primary Care 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
4K
Medicare Part D claims · 500 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
39%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.5K
105 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Kori Williams, FNP filed 3,635 Medicare Part D claims in 2023 as a Primary Care Nurse Practitioner in Bakersfield, California, prescribing 39% generic.
- 4K
- Part D claims, 2023
- 39%
- generic prescribing
- $3.5K
- 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.
Kori Williams, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,635 Top 9% higher than 91% 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 Kori Williams, FNP?
Quality data not reportedPrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
3,635 167% vs specialty avg
Specialty distribution in California
How Primary Care Nurse Practitioner compares to other specialties among California 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 Primary Care 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).
Kori Williams, FNP appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding FNP credentials at 8307 BRIMHALL RD, Bakersfield, CA, 93312, with a listed phone of (661) 587-8990. NPI 1013457969 was issued on 02/26/2017.
Medicare Part D records for calendar year 2023 show 3,635 prescription claims written by this provider, covering 500 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 54% brand-name and 39% generic by claim count.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,138 enrolled providers across 54 states and an average of 1,363 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 | 1013457969 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 02/26/2017 |
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 Kori Williams, FNP. Source: openpaymentsdata.cms.gov.
Total received
$3.5K
Largest payer
Medtronic, 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.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Kori Williams, FNP. To verify Kori Williams, FNP's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Kori Williams, FNP - brand share 54.0%
Primary Care Nurse Practitioner average
54% brand-name claims vs 39% generic, on 3,635 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.
3,635
Total Claims
$1.8M
Total Drug Cost
500
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,187
- Total Day Supply
- 181,958
- Brand vs Generic
- 54% brand / 39% generic
- Brand Drug Cost
- $1.7M
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 1.74
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 74, 65-74: 266, 75-84: 121, 85+: 39
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kori Williams, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ozempic
Ozempic
422 claims
- Levothyroxine Sodium
Levothyroxine Sodium
337 claims
- Trulicity
Trulicity
257 claims
- Metformin Hcl
Metformin Hcl
216 claims
- Jardiance
Jardiance
197 claims
- Atorvastatin Calcium 150
Atorvastatin Calcium
150 claims
- Farxiga 137
Farxiga
137 claims
- Novolog Flexpen 108
Novolog Flexpen
108 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 422 |
| Levothyroxine Sodium | 337 |
| Trulicity Dulaglutide | 257 |
| Metformin Hcl | 216 |
| Jardiance Empagliflozin | 197 |
| Atorvastatin Calcium | 150 |
| Farxiga Dapagliflozin Propanediol | 137 |
| Novolog Flexpen Insulin Aspart | 108 |
| Glipizide | 75 |
| Rosuvastatin Calcium | 74 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Primary Care Nurse Practitioner Overview
How Kori Williams, FNP fits within the Primary Care Nurse Practitioner landscape nationally.
10,138
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Kori Williams, FNP's 3,635 claims are above the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Williams.
Pernian Abadi
Bakersfield, CA
Ann Abraham
Long Beach, CA
Dr. Angelica Acevedo
FNP
Parlier, CA
Dr. Natalie Adame
PNP
Orange, CA
Dr. Tracie Adamson
NP, CNS, LCSW
Palo Alto, CA
Compare Primary Care 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Primary Care 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
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Kori Williams, FNP's specialty? ▼
Kori Williams, FNP specializes in Primary Care Nurse Practitioner and practices in Bakersfield, California. Credentials: FNP.
How much does Kori Williams, FNP prescribe under Medicare Part D? ▼
In 2023, Kori Williams, FNP wrote 3,635 Medicare Part D claims totaling $1.8M in drug costs for 500 beneficiaries.
Where is Kori Williams, FNP located? ▼
Kori Williams, FNP is located at 8307 BRIMHALL RD, Bakersfield, CA, 93312. Phone: (661) 587-8990.
What is Kori Williams, FNP's NPI number? ▼
Kori Williams, FNP's National Provider Identifier (NPI) is 1013457969, issued on 02/26/2017.
Does Kori Williams, FNP prescribe more brand-name or generic drugs? ▼
Kori Williams, FNP's prescribing is 54% brand-name and 39% generic drugs by claim count, with $1.7M in brand drug costs.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,138 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Kori Williams, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Kori Williams, FNP's most frequently prescribed drugs include Ozempic, Levothyroxine Sodium, Trulicity. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kori Williams, FNP accept Medicare? ▼
Kori Williams, FNP appears in CMS Medicare data with 3,635 Part D claims and 500 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kori Williams, FNP's credentials? ▼
Kori Williams, FNP's NPI is 1013457969 with credentials FNP. 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.