2026 NPPES data Physician Assistant NPI 1396955803 PA
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Laquinta Williams-Johnson, PA

Physician Assistant in Anaheim, 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 149,975 in Physician Assistant, 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
101
Medicare Part D claims · 35 beneficiaries · Physician Assistant avg: 790
MIPS score
55.3/100
▼ 28 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Laquinta Williams-Johnson, PA reported a CMS MIPS final score of 55.3/100 - below the 83.1 national average - and filed 101 Medicare Part D claims in 2023.

55.3/100
MIPS score · -28 vs avg
101
Part D claims, 2023

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.

Laquinta Williams-Johnson, PA's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

55 5th percentile higher than 5% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). This entry sits in this band. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Laquinta Williams-Johnson, PA sits

This provider among physician assistant peers

Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Laquinta Williams-Johnson, PA writes more Part D claims than 26% of them and scores higher on MIPS quality than 2% - placing this provider in the lower-volume, lower-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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 42Laquinta Williams-Johnson, PA-Part D claim volume, percentile in specialty: 26 · MIPS quality, percentile: 2
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one physician assistant peer from a representative sample of 60; the gold marker is Laquinta Williams-Johnson, PA. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Laquinta Williams-Johnson, PA?

Below national average

NPI registry status

Active

Issued 05/23/2007

NPI 1396955803

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

101 87% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

55.3/100 27.8 pts vs avg

Mid-tier band

vs 83.1 national avg

Specialty distribution in California

How Physician Assistant compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Physician Assistant - 1.4%Physician Assistant1.4%
Largest specialties in California (% of in-state providers)

Medicare quality performance — MIPS

Laquinta Williams-Johnson, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Below national average
MIPS Final Score
55.3/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 55.3/100 vs national avg 83.1

0%100%National avg83%55.3%
MIPS final score (Physician Assistant) — 55.3/100 vs national avg 83.1

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).

Laquinta Williams-Johnson, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 2237 BALL ROAD, Anaheim, CA, 92804, with a listed phone of (714) 490-2750. NPI 1396955803 was issued on 05/23/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Williams-Johnson 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 101 prescription claims written by this provider, covering 35 Medicare beneficiaries and totaling roughly $5K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 55.3/100 for the 2023 performance year (Quality 6, Cost 64.9), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

2237 BALL ROAD
Anaheim, CA 92804

Provider Details

NPI 1396955803
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 05/23/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

55.2942
Final Score
Avg: 83.1
5.9791
Quality
64.8625
Cost
100
Promoting Interoperability

Reporting: Group practice

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 Laquinta Williams-Johnson, PA. To verify Laquinta Williams-Johnson, PA'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

101
Total Claims
$5K
Total Drug Cost
35
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
159
Total Day Supply
4,685
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
0.83
Gender Split
54% female / 46% male

Physician Assistant Overview

How Laquinta Williams-Johnson, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

Laquinta Williams-Johnson, PA's 101 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Williams-Johnson.

Compare Physician Assistant 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 Physician Assistant 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.

Frequently Asked Questions

What is Laquinta Williams-Johnson, PA's specialty?
Laquinta Williams-Johnson, PA specializes in Physician Assistant and practices in Anaheim, California. Credentials: PA.
How much does Laquinta Williams-Johnson, PA prescribe under Medicare Part D?
In 2023, Laquinta Williams-Johnson, PA wrote 101 Medicare Part D claims totaling $5K in drug costs for 35 beneficiaries.
What is Laquinta Williams-Johnson, PA's Medicare quality score?
Laquinta Williams-Johnson, PA has a CMS MIPS Final Score of 55.3/100 (Quality: 6, Cost: 64.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Laquinta Williams-Johnson, PA located?
Laquinta Williams-Johnson, PA is located at 2237 BALL ROAD, Anaheim, CA, 92804. Phone: (714) 490-2750.
What is Laquinta Williams-Johnson, PA's NPI number?
Laquinta Williams-Johnson, PA's National Provider Identifier (NPI) is 1396955803, issued on 05/23/2007.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
Does Laquinta Williams-Johnson, PA accept Medicare?
Laquinta Williams-Johnson, PA appears in CMS Medicare data with 101 Part D claims and 35 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Laquinta Williams-Johnson, PA's credentials?
Laquinta Williams-Johnson, PA's NPI is 1396955803 with credentials PA. 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.
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

Compiled from official public sources by the PlainDoctor editorial team.