2026 NPPES data Infusion Therapy Registered Nurse NPI 1083981740 RN
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CAROLYN WILLIAMS, RN

Infusion Therapy Registered Nurse in ROUND LAKE, Illinois. 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.
What the federal data reveals: CAROLYN WILLIAMS, RN is a Infusion Therapy Registered Nurse ([object Object]) practicing in ROUND LAKE, Illinois .

What stands out: CAROLYN WILLIAMS, RN specializes in Infusion Therapy Registered Nurse and practices in ROUND LAKE, Illinois, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

CAROLYN WILLIAMS, RN at a glance

Quality data not reported

NPI registry status

Active

Issued 11/23/2011

NPI 1083981740

Primary specialty

Infusion Therapy Registered Nurse

Niche

689 US NPIs in this specialty

Specialty distribution in Illinois

How Infusion Therapy Registered Nurse compares to other specialties among Illinois providers

Illinois providers

Infusion Therapy Registered Nurse share within Illinois

1. Infusion Therapy Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Infusion Therapy Registered Nurse share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Infusion Therapy Registered Nurse (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Infusion Therapy Registered Nurse ABMS/AOA estimate

Est. board-certified rate (Infusion Therapy Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Infusion Therapy Registered Nurse) — 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).

CAROLYN WILLIAMS, RN is a Infusion Therapy Registered Nurse provider practicing in ROUND LAKE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: RN. NPI: 1083981740. 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.

CAROLYN WILLIAMS, RN appears in the CMS NPPES registry as a Infusion Therapy Registered Nurse provider holding RN credentials at 25212 WEST RTE 120, ROUND LAKE, IL, 60073, with a listed phone of (847) 270-5071. NPI 1083981740 was issued on 11/23/2011. 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Infusion Therapy Registered Nurse providers operate outside Part D entirely.

Infusion Therapy Registered Nurse is a narrow specialty nationwide, with 689 enrolled providers across 50 states and an average of 784 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

25212 WEST RTE 120
ROUND LAKE, IL 60073

Provider Details

NPI 1083981740
Specialty Infusion Therapy Registered Nurse
Credentials RN
Gender Female
NPI Issued 11/23/2011

License & disciplinary context — Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 — they are NOT specific to CAROLYN WILLIAMS, RN. To verify CAROLYN WILLIAMS, RN's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR 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 Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Infusion Therapy Registered Nurse Overview

How CAROLYN WILLIAMS, RN fits within the Infusion Therapy Registered Nurse landscape nationally.

689
Infusion Therapy Registered Nurse Providers in US
50
States with Infusion Therapy Registered Nurse
784
Avg Claims per Provider

Nearby Infusion Therapy Registered Nurse Providers in Illinois

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

Compare Infusion Therapy Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is CAROLYN WILLIAMS, RN's specialty?
CAROLYN WILLIAMS, RN specializes in Infusion Therapy Registered Nurse and practices in ROUND LAKE, Illinois. Credentials: RN.
Where is CAROLYN WILLIAMS, RN located?
CAROLYN WILLIAMS, RN is located at 25212 WEST RTE 120, ROUND LAKE, IL, 60073. Phone: (847) 270-5071.
What is CAROLYN WILLIAMS, RN's NPI number?
CAROLYN WILLIAMS, RN's National Provider Identifier (NPI) is 1083981740, issued on 11/23/2011.
How many Infusion Therapy Registered Nurse providers are there in the US?
There are 689 Infusion Therapy Registered Nurse providers across 50 states in the US. The average Infusion Therapy Registered Nurse provider writes 784 Medicare Part D claims per year.
Does CAROLYN WILLIAMS, RN accept Medicare?
CAROLYN WILLIAMS, RN appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CAROLYN WILLIAMS, RN's credentials?
CAROLYN WILLIAMS, RN's NPI is 1083981740 with credentials RN. 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.
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