NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1154587426 M.D.
Verify on CMS → Kim Williams, M.D.
Neurological Surgery Physician in Hinsdale, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,116 in Neurological Surgery Physician, 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
114
Medicare Part D claims · 55 beneficiaries · Neurological Surgery Physician avg: 181
Industry payments
$3.9K
58 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Kim Williams, M.D. filed 114 Medicare Part D claims in 2023 as a Neurological Surgery Physician in Hinsdale, Illinois.
- 114
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Kim Williams, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
114 35th percentile higher than 35% of 1,370,886 prescribers
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
✓
Board certification likely (heuristic, not verified)
Kim Williams, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 4 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Kim Williams, M.D.?
Quality data not reportedPrimary specialty
Neurological Surgery Physician
Medicare Part D claims
114 37% vs specialty avg
Specialty distribution in Illinois
How Neurological Surgery Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Neurological Surgery Physician. Verify directly:
How MIPS and board certification work
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).
Kim Williams, M.D. appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding M.D. credentials at 908 N ELM ST STE 202, Hinsdale, IL, 60521, with a listed phone of (630) 856-8640. NPI 1154587426 was issued on 08/05/2008.
Medicare Part D records for calendar year 2023 show 114 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $1K in drug spend, with an opioid prescribing rate of 28.1%.
Neurological Surgery Physician is a mid-sized specialty nationwide, with 8,116 enrolled providers across 53 states and an average of 181 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
Provider Details
| NPI | 1154587426 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/05/2008 |
Hospital and facility affiliations
Facilities where Kim Williams, M.D. 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.
According to CMS billing records, Kim Williams, M.D. is affiliated with 4 Medicare-billing facilities.
Center For Physical Rehabilitation And Therapy LP
Grand Rapids, MI
Center For Physical Rehabilitation Inc
Grand Rapids, MI
Great Lakes Neurosurgical Associates PC
Grand Rapids, MI
Sheridan Community Hospital
Sheridan, MI
Critical Access Hospitals
CMS CCN: 231312
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 Kim Williams, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$3.9K
Largest payer
Medtronic, 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.
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 Kim Williams, M.D.. To verify Kim Williams, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
114
Total Claims
$1K
Total Drug Cost
55
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 117
- Total Day Supply
- 2,205
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
- Opioid Claims
- 32 (28.1% rate)
Patient Demographics
- Average Patient Age
- 68.3 years
- Avg HCC Risk Score
- 1.30
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 16, 65-74: 25, 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 Kim Williams, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
29 claims
- Gabapentin
Gabapentin
18 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
16 claims
| Drug | Claims |
|---|---|
| Cyclobenzaprine Hcl | 29 |
| Gabapentin | 18 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurological Surgery Physician Overview
How Kim Williams, M.D. fits within the Neurological Surgery Physician landscape nationally.
8,116
Neurological Surgery Physician Providers in US
53
States with Neurological Surgery Physician
181
Avg Claims per Provider
Kim Williams, M.D.'s 114 claims are below the specialty average of 181.
Nearby Neurological Surgery Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Williams.
Dr. Raed Abusuwwa
D.O.
Downers Grove, IL
Dr. Leslie Acakpo-Satchivi
MD
Springfield, IL
Dr. Paul Ackerman
M.D.
Chicago, IL
Dr. Arjang Ahmadpour
MD
McHenry, IL
Dr. Christopher Ahuja
MD
Winfield, IL
Compare Neurological Surgery Physician 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurological Surgery Physician 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.
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Frequently Asked Questions
What is Kim Williams, M.D.'s specialty? ▼
Kim Williams, M.D. specializes in Neurological Surgery Physician and practices in Hinsdale, Illinois. Credentials: M.D..
How much does Kim Williams, M.D. prescribe under Medicare Part D? ▼
In 2023, Kim Williams, M.D. wrote 114 Medicare Part D claims totaling $1K in drug costs for 55 beneficiaries.
Where is Kim Williams, M.D. located? ▼
Kim Williams, M.D. is located at 908 N ELM ST STE 202, Hinsdale, IL, 60521. Phone: (630) 856-8640.
What is Kim Williams, M.D.'s NPI number? ▼
Kim Williams, M.D.'s National Provider Identifier (NPI) is 1154587426, issued on 08/05/2008.
Does Kim Williams, M.D. prescribe opioids? ▼
Yes, Kim Williams, M.D. had 32 opioid claims in 2023 with an opioid prescribing rate of 28.1%.
How many Neurological Surgery Physician providers are there in the US? ▼
There are 8,116 Neurological Surgery Physician providers across 53 states in the US. The average Neurological Surgery Physician provider writes 181 Medicare Part D claims per year.
What drugs does Kim Williams, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Kim Williams, M.D.'s most frequently prescribed drugs include Cyclobenzaprine Hcl, Gabapentin, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kim Williams, M.D. accept Medicare? ▼
Kim Williams, M.D. appears in CMS Medicare data with 114 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kim Williams, M.D.'s credentials? ▼
Kim Williams, M.D.'s NPI is 1154587426 with credentials M.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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.