2026 NPPES data Prescribing (Medical) Psychologist NPI 1861627465 PSY.D.
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LAKISHA WILLIAMS, PSY.D.

Prescribing (Medical) Psychologist in LAKE CHARLES, Louisiana. 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
400
Medicare Part D claims · 16 beneficiaries · Prescribing (Medical) Psychologist avg: 972
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

LAKISHA WILLIAMS, PSY.D. filed 400 Medicare Part D claims in 2023 as a Prescribing (Medical) Psychologist in LAKE CHARLES, Louisiana, prescribing 93% generic.

400
Part D claims, 2023
93%
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.

LAKISHA WILLIAMS, PSY.D.'s Medicare Part D volume vs every U.S. prescriber

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

400 Top 38% higher than 62% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 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 LAKISHA WILLIAMS, PSY.D.?

Quality data not reported

NPI registry status

Active

Issued 05/26/2009

NPI 1861627465

Primary specialty

Prescribing (Medical) Psychologist

Rare

225 US NPIs in this specialty

Medicare Part D claims

400 59% vs specialty avg

2023 prescription claims

Specialty avg: 972

Specialty distribution in Louisiana

How Prescribing (Medical) Psychologist compares to other specialties among Louisiana providers

Louisiana providers

Prescribing (Medical) Psychologist share within Louisiana

1. Prescribing (Medical) Psychologist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Prescribing (Medical) Psychologist share within Louisiana

Specialty board-certification context

Estimated specialty board-certified rate — Prescribing (Medical) Psychologist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Prescribing (Medical) Psychologist ABMS/AOA estimate

Est. board-certified rate (Prescribing (Medical) Psychologist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Prescribing (Medical) Psychologist) — 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).

LAKISHA WILLIAMS, PSY.D. is a Prescribing (Medical) Psychologist provider practicing in LAKE CHARLES, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PSY.D.. NPI: 1861627465. 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.

LAKISHA WILLIAMS, PSY.D. appears in the CMS NPPES registry as a Prescribing (Medical) Psychologist provider holding PSY.D. credentials at 1409 KIRKMAN ST, LAKE CHARLES, LA, 70601, with a listed phone of (337) 419-3586. NPI 1861627465 was issued on 05/26/2009. 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 400 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $13K in drug spend, split 7% brand-name and 93% generic by claim count. 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.

Prescribing (Medical) Psychologist is a narrow specialty nationwide, with 225 enrolled providers across 42 states and an average of 972 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

1409 KIRKMAN ST
LAKE CHARLES, LA 70601

Provider Details

NPI 1861627465
Specialty Prescribing (Medical) Psychologist
Credentials PSY.D.
Gender Female
NPI Issued 05/26/2009

Brand vs generic prescribing mix · Generic-heavy

LAKISHA WILLIAMS, PSY.D. — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 400 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.

400
Total Claims
$13K
Total Drug Cost
16
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
404
Total Day Supply
12,070
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$4K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
52.0 years
Avg HCC Risk Score
1.59

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
NPPES-Specialty
Alprazolam
N/A

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Prescribing (Medical) Psychologist Overview

How LAKISHA WILLIAMS, PSY.D. fits within the Prescribing (Medical) Psychologist landscape nationally.

225
Prescribing (Medical) Psychologist Providers in US
42
States with Prescribing (Medical) Psychologist
972
Avg Claims per Provider

LAKISHA WILLIAMS, PSY.D.'s 400 claims are below the specialty average of 972.

Nearby Prescribing (Medical) Psychologist Providers in Louisiana

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

Compare Prescribing (Medical) Psychologist nationally: see state-by-state distribution →

Frequently Asked Questions

What is LAKISHA WILLIAMS, PSY.D.'s specialty?
LAKISHA WILLIAMS, PSY.D. specializes in Prescribing (Medical) Psychologist and practices in LAKE CHARLES, Louisiana. Credentials: PSY.D..
How much does LAKISHA WILLIAMS, PSY.D. prescribe under Medicare Part D?
In 2023, LAKISHA WILLIAMS, PSY.D. wrote 400 Medicare Part D claims totaling $13K in drug costs for 16 beneficiaries.
Where is LAKISHA WILLIAMS, PSY.D. located?
LAKISHA WILLIAMS, PSY.D. is located at 1409 KIRKMAN ST, LAKE CHARLES, LA, 70601. Phone: (337) 419-3586.
What is LAKISHA WILLIAMS, PSY.D.'s NPI number?
LAKISHA WILLIAMS, PSY.D.'s National Provider Identifier (NPI) is 1861627465, issued on 05/26/2009.
Does LAKISHA WILLIAMS, PSY.D. prescribe more brand-name or generic drugs?
LAKISHA WILLIAMS, PSY.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $4K in brand drug costs.
How many Prescribing (Medical) Psychologist providers are there in the US?
There are 225 Prescribing (Medical) Psychologist providers across 42 states in the US. The average Prescribing (Medical) Psychologist provider writes 972 Medicare Part D claims per year.
What drugs does LAKISHA WILLIAMS, PSY.D. prescribe most often?
Based on 2023 Medicare Part D data, LAKISHA WILLIAMS, PSY.D.'s most frequently prescribed drugs include NPPES-Specialty. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LAKISHA WILLIAMS, PSY.D. accept Medicare?
LAKISHA WILLIAMS, PSY.D. appears in CMS Medicare data with 400 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LAKISHA WILLIAMS, PSY.D.'s credentials?
LAKISHA WILLIAMS, PSY.D.'s NPI is 1861627465 with credentials PSY.D.. 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