2026 NPPES data Adult Psychiatric/Mental Health Clinical Nurse Specialist NPI 1548395015 APRN
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SUSAN WILLIAMS, APRN

Adult Psychiatric/Mental Health Clinical Nurse Specialist in PALMER, Massachusetts. 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
6K
Medicare Part D claims · 340 beneficiaries · Adult Psychiatric/Mental Health Clinical Nurse Specialist avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SUSAN WILLIAMS, APRN filed 6,351 Medicare Part D claims in 2023 as a Adult Psychiatric/Mental Health Clinical Nurse Specialist in PALMER, Massachusetts, prescribing 98% generic.

6K
Part D claims, 2023
98%
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.

SUSAN WILLIAMS, APRN's Medicare Part D volume vs every U.S. prescriber

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

6,351 Top 4% higher than 96% 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 SUSAN WILLIAMS, APRN?

Quality data not reported

NPI registry status

Active

Issued 02/23/2007

NPI 1548395015

Primary specialty

Adult Psychiatric/Mental Health Clinical Nurse Specialist

Niche

953 US NPIs in this specialty

Medicare Part D claims

6,351 385% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Massachusetts

How Adult Psychiatric/Mental Health Clinical Nurse Specialist compares to other specialties among Massachusetts providers

Massachusetts providers

Adult Psychiatric/Mental Health Clinical Nurse Specialist share within Massachusetts

1. Adult Psychiatric/Mental Health Clinical Nurse Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Psychiatric/Mental Health Clinical Nurse Specialist share within Massachusetts

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Adult Psychiatric/Mental Health Clinical Nurse Specialist) — 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).

SUSAN WILLIAMS, APRN appears in the CMS NPPES registry as a Adult Psychiatric/Mental Health Clinical Nurse Specialist provider holding APRN credentials at 42 WRIGHT ST, PALMER, MA, 01069, with a listed phone of (413) 284-5285. NPI 1548395015 was issued on 02/23/2007. 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 6,351 prescription claims written by this provider, covering 340 Medicare beneficiaries and totaling roughly $317K in drug spend, split 2% brand-name and 98% 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.

Adult Psychiatric/Mental Health Clinical Nurse Specialist is a narrow specialty nationwide, with 953 enrolled providers across 51 states and an average of 1,309 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

42 WRIGHT ST
PALMER, MA 01069

Provider Details

NPI 1548395015
Specialty Adult Psychiatric/Mental Health Clinical Nurse Specialist
Credentials APRN
Gender Female
NPI Issued 02/23/2007

Hospital and facility affiliations

Facilities where SUSAN WILLIAMS, APRN 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.

BAYSTATE MEDICAL PRACTICES INC
SPRINGFIELD, MA

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 — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to SUSAN WILLIAMS, APRN. To verify SUSAN WILLIAMS, APRN's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

SUSAN WILLIAMS, APRN — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 6,351 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.

6,351
Total Claims
$317K
Total Drug Cost
340
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,527
Total Day Supply
283,297
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$89K
Generic Drug Cost
$229K

Patient Demographics

Average Patient Age
60.8 years
Avg HCC Risk Score
1.27
Gender Split
74% female / 26% male
Age Distribution
<65: 178, 65-74: 126, 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 SUSAN WILLIAMS, APRN 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
Clonazepam
774
Lorazepam
337
Fluoxetine Hcl
305
Trazodone Hcl
304
Quetiapine Fumarate
280
Hydroxyzine Pamoate
268
Lamotrigine
239
Sertraline Hcl
238
Gabapentin
211
Duloxetine Hcl
200

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

Adult Psychiatric/Mental Health Clinical Nurse Specialist Overview

How SUSAN WILLIAMS, APRN fits within the Adult Psychiatric/Mental Health Clinical Nurse Specialist landscape nationally.

953
Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in US
51
States with Adult Psychiatric/Mental Health Clinical Nurse Specialist
1,309
Avg Claims per Provider

SUSAN WILLIAMS, APRN's 6,351 claims are above the specialty average of 1,309.

Nearby Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in Massachusetts

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

Compare Adult Psychiatric/Mental Health Clinical Nurse Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is SUSAN WILLIAMS, APRN's specialty?
SUSAN WILLIAMS, APRN specializes in Adult Psychiatric/Mental Health Clinical Nurse Specialist and practices in PALMER, Massachusetts. Credentials: APRN.
How much does SUSAN WILLIAMS, APRN prescribe under Medicare Part D?
In 2023, SUSAN WILLIAMS, APRN wrote 6,351 Medicare Part D claims totaling $317K in drug costs for 340 beneficiaries.
Where is SUSAN WILLIAMS, APRN located?
SUSAN WILLIAMS, APRN is located at 42 WRIGHT ST, PALMER, MA, 01069. Phone: (413) 284-5285.
What is SUSAN WILLIAMS, APRN's NPI number?
SUSAN WILLIAMS, APRN's National Provider Identifier (NPI) is 1548395015, issued on 02/23/2007.
Does SUSAN WILLIAMS, APRN prescribe more brand-name or generic drugs?
SUSAN WILLIAMS, APRN's prescribing is 2% brand-name and 98% generic drugs by claim count, with $89K in brand drug costs.
How many Adult Psychiatric/Mental Health Clinical Nurse Specialist providers are there in the US?
There are 953 Adult Psychiatric/Mental Health Clinical Nurse Specialist providers across 51 states in the US. The average Adult Psychiatric/Mental Health Clinical Nurse Specialist provider writes 1,309 Medicare Part D claims per year.
What drugs does SUSAN WILLIAMS, APRN prescribe most often?
Based on 2023 Medicare Part D data, SUSAN WILLIAMS, APRN's most frequently prescribed drugs include Clonazepam, Lorazepam, Fluoxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SUSAN WILLIAMS, APRN accept Medicare?
SUSAN WILLIAMS, APRN appears in CMS Medicare data with 6,351 Part D claims and 340 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SUSAN WILLIAMS, APRN's credentials?
SUSAN WILLIAMS, APRN's NPI is 1548395015 with credentials APRN. 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