2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1295397123 PMHNP
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DAERYL WILLIAMSON, PMHNP

Psychiatric/Mental Health Nurse Practitioner in ASHLAND, Virginia. 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
4K
Medicare Part D claims · 133 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$90
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DAERYL WILLIAMSON, PMHNP filed 3,731 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in ASHLAND, Virginia, prescribing 89% generic.

4K
Part D claims, 2023
89%
generic prescribing
$90
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.

DAERYL WILLIAMSON, PMHNP's Medicare Part D volume vs every U.S. prescriber

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

3,731 Top 9% higher than 91% 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%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 DAERYL WILLIAMSON, PMHNP?

Quality data not reported

NPI registry status

Active

Issued 07/01/2019

NPI 1295397123

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

3,731 302% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in Virginia

How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Virginia providers

Virginia providers

Psychiatric/Mental Health Nurse Practitioner share within Virginia

1. Psychiatric/Mental Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Nurse Practitioner share within Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health 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).

DAERYL WILLIAMSON, PMHNP appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding PMHNP credentials at 10469 ATLEE STATION RD, ASHLAND, VA, 23005, with a listed phone of (804) 923-4002. NPI 1295397123 was issued on 07/01/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WILLIAMSON 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 3,731 prescription claims written by this provider, covering 133 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 11% brand-name and 89% 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.

Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 39,953 enrolled providers across 54 states and an average of 927 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

10469 ATLEE STATION RD
ASHLAND, VA 23005

Provider Details

NPI 1295397123
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials PMHNP
Gender Female
NPI Issued 07/01/2019

Hospital and facility affiliations

Facilities where DAERYL WILLIAMSON, PMHNP 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.

MIDDLE PENINSULA NORTHERN NECK MENTAL HEALTH AND RETARDATION
TAPPAHANNOCK, VA

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 DAERYL WILLIAMSON, PMHNP. Source: openpaymentsdata.cms.gov.

Total received

$90

Largest payer

Alkermes, 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 · Typical

DAERYL WILLIAMSON, PMHNP — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 3,731 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.

3,731
Total Claims
$1.3M
Total Drug Cost
133
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,503
Total Day Supply
134,135
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$1.2M
Generic Drug Cost
$141K

Patient Demographics

Average Patient Age
53.6 years
Avg HCC Risk Score
1.27
Gender Split
55% female / 45% male
Age Distribution
<65: 96, 65-74: 33, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What DAERYL WILLIAMSON, PMHNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Trazodone Hcl
224
Olanzapine
207
Risperidone
182
Quetiapine Fumarate
175
Benztropine Mesylate
171
Hydroxyzine Hcl
162
Aripiprazole
134
Invega Sustenna
Paliperidone Palmitate
110
Lamotrigine
108
Sertraline Hcl
108

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

Psychiatric/Mental Health Nurse Practitioner Overview

How DAERYL WILLIAMSON, PMHNP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.

39,953
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider

DAERYL WILLIAMSON, PMHNP's 3,731 claims are above the specialty average of 927.

Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Virginia

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

Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAERYL WILLIAMSON, PMHNP's specialty?
DAERYL WILLIAMSON, PMHNP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in ASHLAND, Virginia. Credentials: PMHNP.
How much does DAERYL WILLIAMSON, PMHNP prescribe under Medicare Part D?
In 2023, DAERYL WILLIAMSON, PMHNP wrote 3,731 Medicare Part D claims totaling $1.3M in drug costs for 133 beneficiaries.
Where is DAERYL WILLIAMSON, PMHNP located?
DAERYL WILLIAMSON, PMHNP is located at 10469 ATLEE STATION RD, ASHLAND, VA, 23005. Phone: (804) 923-4002.
What is DAERYL WILLIAMSON, PMHNP's NPI number?
DAERYL WILLIAMSON, PMHNP's National Provider Identifier (NPI) is 1295397123, issued on 07/01/2019.
Does DAERYL WILLIAMSON, PMHNP prescribe more brand-name or generic drugs?
DAERYL WILLIAMSON, PMHNP's prescribing is 11% brand-name and 89% generic drugs by claim count, with $1.2M in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US?
There are 39,953 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does DAERYL WILLIAMSON, PMHNP prescribe most often?
Based on 2023 Medicare Part D data, DAERYL WILLIAMSON, PMHNP's most frequently prescribed drugs include Trazodone Hcl, Olanzapine, Risperidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAERYL WILLIAMSON, PMHNP accept Medicare?
DAERYL WILLIAMSON, PMHNP appears in CMS Medicare data with 3,731 Part D claims and 133 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAERYL WILLIAMSON, PMHNP's credentials?
DAERYL WILLIAMSON, PMHNP's NPI is 1295397123 with credentials PMHNP. 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