NPI registry status
Active
2026 NPPES data Colon & Rectal Surgery Physician NPI 1083616965 MD
Verify on CMS → Kathleen Williams, MD
Colon & Rectal Surgery Physician in Ormond Beach, Florida.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,608 in Colon & Rectal 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
265
Medicare Part D claims · 171 beneficiaries · Colon & Rectal Surgery Physician avg: 196
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
72.7/100
▼ 10 pts below national avg 83.1 · Mid-tier
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
Kathleen Williams, MD reported a CMS MIPS final score of 72.7/100 - below the 83.1 national average - and filed 265 Medicare Part D claims in 2023.
- 72.7/100
- MIPS score · -10 vs avg
- 265
- Part D claims, 2023
- 82%
- generic prescribing
- 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.
Kathleen Williams, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 10th percentile higher than 10% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Kathleen Williams, MD sits
This provider among colon & rectal surgery physician peers
Across the 536 colon & rectal surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Kathleen Williams, MD writes more Part D claims than 73% of them and scores higher on MIPS quality than 10% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one colon & rectal surgery physician peer from a representative sample of 60; the gold marker is Kathleen Williams, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Kathleen Williams, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Kathleen Williams, MD?
Below national averagePrimary specialty
Colon & Rectal Surgery Physician
Medicare Part D claims
265 35% vs specialty avg
MIPS final score
72.7/100 10.4 pts vs avg
Specialty distribution in Florida
How Colon & Rectal Surgery Physician compares to other specialties among Florida providers
Medicare quality performance, MIPS
Kathleen Williams, MD's 2023 MIPS final score plotted against the Colon & Rectal Surgery Physician national average
- MIPS Final Score
- 72.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Colon & Rectal Surgery Physician) - 72.7/100 vs national avg 83.1
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).
Kathleen Williams, MD appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding MD credentials at 550 MEMORIAL CIR, Ormond Beach, FL, 32174, with a listed phone of (386) 672-0017. NPI 1083616965 was issued on 08/11/2005.
Medicare Part D records for calendar year 2023 show 265 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $22K in drug spend, split 18% brand-name and 82% generic by claim count, with an opioid prescribing rate of 6.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 72.7/100 for the 2023 performance year (Quality 76, Cost 58), compared with the national average of 83.1.
Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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 | 1083616965 |
|---|---|
| Specialty | Colon & Rectal Surgery Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/11/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
72.701
Final Score
Avg: 83.1
76.0154
Quality
57.9878
Cost
100
Promoting Interoperability
Reporting: Group practice
License & disciplinary context - Florida FLDOH 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 ~75K Florida medical licensees in 2023 - they are NOT specific to Kathleen Williams, MD. To verify Kathleen Williams, MD's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Kathleen Williams, MD - brand share 18.0%
Colon & Rectal Surgery Physician average
18% brand-name claims vs 82% generic, on 265 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.
265
Total Claims
$22K
Total Drug Cost
171
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 304
- Total Day Supply
- 3,675
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $5K
- Generic Drug Cost
- $17K
- Opioid Claims
- 18 (6.8% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 74.1 years
- Avg HCC Risk Score
- 1.29
- Gender Split
- 75% female / 25% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kathleen Williams, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metronidazole
Metronidazole
16 claims
- Mesalamine
Mesalamine
15 claims
- Sulfasalazine
Sulfasalazine
14 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
12 claims
- Mesalamine Dr
Mesalamine Dr
12 claims
| Drug | Claims |
|---|---|
| Metronidazole | 16 |
| Mesalamine | 15 |
| Sulfasalazine | 14 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 12 |
| Mesalamine Dr Mesalamine | 12 |
| Gavilyte-C "Peg3350/Sod Sulf | N/A |
| Peg-3350 And Electrolytes "Peg3350/Sod Sulf | N/A |
| Sod Sulf-Potass Sulf-Mag Sulf "Sodium | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Colon & Rectal Surgery Physician Overview
How Kathleen Williams, MD fits within the Colon & Rectal Surgery Physician landscape nationally.
1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider
Kathleen Williams, MD's 265 claims are above the specialty average of 196.
Nearby Colon & Rectal Surgery Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Williams.
Mahmoud Abu Gazala
Weston, FL
Dr. Raffi Agopian
M.D.
Venice, FL
Dr. Aziz Ahmad
M.D.
Lynn Haven, FL
Dr. Matthew Albert
MD
Altamonte Springs, FL
Dr. Carlos Alvarez
M.D.
Miami, FL
Compare Colon & Rectal 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 Florida medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Colon & Rectal 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 Kathleen Williams, MD's specialty? ▼
Kathleen Williams, MD specializes in Colon & Rectal Surgery Physician and practices in Ormond Beach, Florida. Credentials: MD.
How much does Kathleen Williams, MD prescribe under Medicare Part D? ▼
In 2023, Kathleen Williams, MD wrote 265 Medicare Part D claims totaling $22K in drug costs for 171 beneficiaries.
What is Kathleen Williams, MD's Medicare quality score? ▼
Kathleen Williams, MD has a CMS MIPS Final Score of 72.7/100 (Quality: 76, Cost: 58). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Kathleen Williams, MD located? ▼
Kathleen Williams, MD is located at 550 MEMORIAL CIR, Ormond Beach, FL, 32174. Phone: (386) 672-0017.
What is Kathleen Williams, MD's NPI number? ▼
Kathleen Williams, MD's National Provider Identifier (NPI) is 1083616965, issued on 08/11/2005.
Does Kathleen Williams, MD prescribe more brand-name or generic drugs? ▼
Kathleen Williams, MD's prescribing is 18% brand-name and 82% generic drugs by claim count, with $5K in brand drug costs.
Does Kathleen Williams, MD prescribe opioids? ▼
Yes, Kathleen Williams, MD had 18 opioid claims in 2023 with an opioid prescribing rate of 6.8%.
How many Colon & Rectal Surgery Physician providers are there in the US? ▼
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
What drugs does Kathleen Williams, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kathleen Williams, MD's most frequently prescribed drugs include Metronidazole, Mesalamine, Sulfasalazine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kathleen Williams, MD accept Medicare? ▼
Kathleen Williams, MD appears in CMS Medicare data with 265 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kathleen Williams, MD's credentials? ▼
Kathleen Williams, MD's NPI is 1083616965 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.