2026 NPPES data Primary Care Nurse Practitioner NPI 1568054807 ARNP
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KARINA WILLIAMS, ARNP

Primary Care Nurse Practitioner in TACOMA, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 165 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KARINA WILLIAMS, ARNP filed 1,126 Medicare Part D claims in 2023 as a Primary Care Nurse Practitioner in TACOMA, Washington, prescribing 90% generic.

1K
Part D claims, 2023
90%
generic prescribing

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.

KARINA WILLIAMS, ARNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,126 Top 23% higher than 77% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 KARINA WILLIAMS, ARNP?

Quality data not reported

NPI registry status

Active

Issued 02/08/2021

NPI 1568054807

Primary specialty

Primary Care Nurse Practitioner

Mid-sized

10,138 US NPIs in this specialty

Medicare Part D claims

1,126 17% vs specialty avg

2023 prescription claims

Specialty avg: 1,363

Specialty distribution in Washington

How Primary Care Nurse Practitioner compares to other specialties among Washington providers

Washington providers

Primary Care Nurse Practitioner share within Washington

1. Primary Care Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Primary Care Nurse Practitioner share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Primary Care Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Primary Care Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Primary Care Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Primary Care Nurse Practitioner) — ABMS / AOA estimate

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).

KARINA WILLIAMS, ARNP is a Primary Care Nurse Practitioner provider practicing in TACOMA, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: ARNP. NPI: 1568054807. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KARINA WILLIAMS, ARNP appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding ARNP credentials at 1614 S MILDRED ST, TACOMA, WA, 98465, with a listed phone of (253) 301-5270. NPI 1568054807 was issued on 02/08/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WILLIAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,126 prescription claims written by this provider, covering 165 Medicare beneficiaries and totaling roughly $99K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 4.8%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

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

1614 S MILDRED ST
TACOMA, WA 98465

Provider Details

NPI 1568054807
Specialty Primary Care Nurse Practitioner
Credentials ARNP
Gender Female
NPI Issued 02/08/2021

Hospital and facility affiliations

Facilities where KARINA WILLIAMS, ARNP 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.

MULTICARE HEALTH SYSTEM
GIG HARBOR, WA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to KARINA WILLIAMS, ARNP. To verify KARINA WILLIAMS, ARNP's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

KARINA WILLIAMS, ARNP — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 1,126 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.

1,126
Total Claims
$99K
Total Drug Cost
165
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,286
Total Day Supply
65,057
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$81K
Generic Drug Cost
$18K
Opioid Claims
54 (4.8% rate)
Antibiotic Claims
21

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
1.16
Gender Split
69% female / 31% male
Age Distribution
<65: 25, 65-74: 80, 75-84: 48, 85+: 12

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
76
Losartan Potassium
46
Amlodipine Besylate
38
Levothyroxine Sodium
36
Lisinopril
29
Metformin Hcl
26
Tramadol Hcl
26
Omeprazole
23
Furosemide
21
Gabapentin
21

* 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 KARINA WILLIAMS, ARNP 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

KARINA WILLIAMS, ARNP's 1,126 claims are below the specialty average of 1,363.

Nearby Primary Care Nurse Practitioner Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as WILLIAMS.

Compare Primary Care Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is KARINA WILLIAMS, ARNP's specialty?
KARINA WILLIAMS, ARNP specializes in Primary Care Nurse Practitioner and practices in TACOMA, Washington. Credentials: ARNP.
How much does KARINA WILLIAMS, ARNP prescribe under Medicare Part D?
In 2023, KARINA WILLIAMS, ARNP wrote 1,126 Medicare Part D claims totaling $99K in drug costs for 165 beneficiaries.
Where is KARINA WILLIAMS, ARNP located?
KARINA WILLIAMS, ARNP is located at 1614 S MILDRED ST, TACOMA, WA, 98465. Phone: (253) 301-5270.
What is KARINA WILLIAMS, ARNP's NPI number?
KARINA WILLIAMS, ARNP's National Provider Identifier (NPI) is 1568054807, issued on 02/08/2021.
Does KARINA WILLIAMS, ARNP prescribe more brand-name or generic drugs?
KARINA WILLIAMS, ARNP's prescribing is 10% brand-name and 90% generic drugs by claim count, with $81K in brand drug costs.
Does KARINA WILLIAMS, ARNP prescribe opioids?
Yes, KARINA WILLIAMS, ARNP had 54 opioid claims in 2023 with an opioid prescribing rate of 4.8%.
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 KARINA WILLIAMS, ARNP prescribe most often?
Based on 2023 Medicare Part D data, KARINA WILLIAMS, ARNP's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KARINA WILLIAMS, ARNP accept Medicare?
KARINA WILLIAMS, ARNP appears in CMS Medicare data with 1,126 Part D claims and 165 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KARINA WILLIAMS, ARNP's credentials?
KARINA WILLIAMS, ARNP's NPI is 1568054807 with credentials ARNP. 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

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