Dr. Rachael Yuson Williams, MD

  • Ventura, CA
  • General surgeon
NPI1386887362PAC ID4082832555
Medicare services, 2024
959
Medicare patients, 2024
106
Part D claims, 2024
179
Publications
7
Hospital affiliations
3
Practice address
147 North Brent Street, Ventura, CA 93003
Practice phone
Call (805) 652-5011
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Community Memorial Hospital - Ventura

Hospital · Ventura, California

See all 10 affiliations

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Dr. Rachael Yuson Williams is a general surgeon in Ventura, California

Dr. Williams practices at Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare.

Dr. Williams' NPI, 1386887362, was assigned on April 7, 2009. Dr. Williams graduated from Boston University School Of Medicine in 2009. Dr. Williams holds California license 159969.

NPI and contact details
Medicare PAC ID
4082832555
NPI enumeration date
April 7, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(805) 652-5011
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
43
Medical school graduation
2009

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Rachael Yuson Williams practices at Community Memorial Hospital - Ventura in Ventura, California

Dr. Williams' primary practice is Community Memorial Hospital - Ventura, at 147 North Brent Street, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-5011.

Source: Dmand AI Affiliation Data

Dr. Rachael Yuson Williams is affiliated with 8 sites of care and 2 medical groups

Dr. Williams' primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. Dr. Williams is also affiliated with Adventist Health Bakersfield. The medical group on file is Grossman Plastic Surgery. Dmand AI also links Dr. Williams to 1 more hospital, 2 group practices and clinics, 2 home health agencies, 1 physician office and 1 medical group, each named with a free account.

See all 10 affiliations for Dr. Williams

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Rachael Yuson Williams' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 8 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Community Memorial Hospital - VenturaAvailable with a free account
+7 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Rachael Yuson Williams is one of 2,926 general surgeons in California

Surgery is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Williams is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Williams' licenses on file in 4 states: California, Delaware, Georgia and Virginia.

Specialties and state licenses

  • Surgery, CaliforniaPrimaryLicense 159969 · 2018 to 2026 · taxonomy 208600000X
  • Delaware license2022 to 2025
  • Georgia license2014 to 2020
  • Virginia license2009 to 2014

General surgeons near Dr. Williams

Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Rachael Yuson Williams billed Medicare for 959 services in 2024

CMS data shows 959 Medicare services from Dr. Williams across 10 procedure codes in 2024, for 106 Medicare patients. Medicare paid $47,848 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024959
Medicare patients106
Paid by Medicare$47,848
Procedure codes10

Dr. Williams' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3952024: 57145%
Surgery
2023: 472024: 260453%
Tests and treatments
2023: 02024: 128

Dr. Williams compared with the California median for general surgeons, 2024

  • Dr. Williams
  • California median
Medicare services
959vs 1665.8 times
Medicare patients
106vs 12112% below
Part D claims
89vs 342.6 times

Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.

Dr. Williams' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Rachael Yuson Williams treated 106 Medicare patients in 2024, average age 71

CMS counts 106 Medicare patients who saw Dr. Williams in 2024. The largest group is 75 to 84, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 3.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 66, with 42% women.

Medicare patients, 2024106
Average age71
Average risk score3.32
Also on Medicaid50%

Dr. Williams' Medicare patients by age, 2024

Dr. Williams' Medicare patients by sex, 2024

  • Women6057%
  • Men4643%

Chronic conditions among Dr. Williams' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis61%
  4. Diabetes60%
  5. Ischemic heart disease48%
  6. Chronic kidney disease38%
  7. Anxiety36%
  8. Heart failure36%

Share of Medicare patients with each condition. A patient can have several.

Dr. Williams' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women42%
  • Men58%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Rachael Yuson Williams wrote 179 Medicare Part D claims in 2024

In 2024, Dr. Williams wrote 179 Medicare Part D claims for 53 patients. 83% of them were for generic drugs. CMS names the drug for 89 of them, across 5 drugs with 11 or more claims each, at $403 in total drug cost. In 2023, CMS named 54 claims across 4 drugs.

Part D claims, 2024179
Drugs named by CMS5
Total drug cost$403
Part D patients53

Dr. Williams' Part D claims by kind of drug, 2024

  • Generic148 claims83%
  • Brand-name31 claims17%

Dr. Williams' most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Williams' Part D claims, 2024

  • Opioids7%13 of 179 claims
  • Antibiotics43%77 of 179 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 542024: 8965%

Drugs named by CMS: 5 in 2024, 4 in 2023.

See all prescribing by Dr. Williams

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Rachael Yuson Williams ranks in the 97th percentile for removal of tissue in Medicare

Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 491 procedures of removal of tissue by Dr. Williams, more than 97% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Williams ranks in Medicare procedure volume

Removal of tissue
97th percentile491 procedures
Removal of skin lesions
81st percentile258 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Rachael Yuson Williams has 7 publications on record

Dmand AI links 7 papers to Dr. Williams, published from 2016 to 2020. The most frequent topics are Burns, Craniocerebral Trauma and Neck Injuries. Dr. Williams has published most often in Am J Surg. Dr. Williams' most frequent co-authors are Juvonda S. Hodge, MD and Jeromy Ryan Patterson, MD.

Papers7
Years published2016 to 2020

Dr. Williams' papers by year, 2016 to 2020

Topics Dr. Williams writes about most

  • Burns
  • Craniocerebral Trauma
  • Neck Injuries

Dr. Williams' most frequent co-authors

Recent publications by Dr. Williams

See all 7 publications and co-authors

See who Dr. Williams researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right general surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Rachael Yuson Williams received $17,317 in industry payments from 2016 to 2025

CMS Open Payments shows 154 general payments to Dr. Williams from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 31% of the total. KCI USA, Inc. paid the most, $7,142.

General payments to Dr. Williams by program year, 2016 to 2025

General payments to Dr. Williams by kind, 2016 to 2025

$17.3Kin total
  • Food and beverage$5,36531%
  • Consulting fees$5,03829%
  • Travel and lodging$4,76528%
  • Speaker and faculty fees$2,15012%

Companies that paid Dr. Williams the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Williams

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Rachael Yuson Williams graduated from Boston University School Of Medicine

Dr. Williams graduated from Boston University School Of Medicine in 2009.

  1. Medical schoolBoston University School Of Medicine
  2. Board certified in surgeryAmerican Board of Surgery
  3. Board certified in surgical critical careAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. Rachael Yuson Williams accepts plans from 8 insurance carriers

Dr. Williams is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • Elevance
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare
  • DE State Medicaid
  • GA State Medicaid

Plan types Dr. Williams accepts, by number of carriers

  1. Medicare6
  2. PPO5
  3. Medicaid2
  4. POS2
  5. EPO1
  6. HMO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Rachael Yuson Williams's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Rachael Yuson Williams

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Rachael Yuson Williams' NPI number?

Dr. Rachael Yuson Williams' NPI number is 1386887362. It was assigned on April 7, 2009, and it is active in the NPI Registry.

What kind of doctor is Dr. Rachael Yuson Williams?

Dr. Rachael Yuson Williams is a general surgeon in Ventura, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. Rachael Yuson Williams practice?

Dr. Williams practices at 147 North Brent Street, Ventura, CA 93003. Dr. Williams' primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. Dmand AI also links Dr. Williams to 1 hospital, 2 group practices and clinics, 2 home health agencies, 1 physician office and 1 medical group.

What is Dr. Rachael Yuson Williams' office phone number?

The practice phone on file for Dr. Williams is (805) 652-5011.

What is Dr. Rachael Yuson Williams' medical license number?

Dr. Williams holds California license 159969, one of the licenses on file in 4 states.

Which states has Dr. Rachael Yuson Williams been licensed in?

Dmand AI has state licenses on file for Dr. Williams in California (2018 to 2026), Delaware (2022 to 2025), Georgia (2014 to 2020) and Virginia (2009 to 2014).

Which hospitals is Dr. Rachael Yuson Williams affiliated with?

Dr. Williams practices at Community Memorial Hospital - Ventura in Ventura, California. Dr. Williams is also affiliated with Adventist Health Bakersfield. Dmand AI links Dr. Williams to 1 more hospital.

What medical group is Dr. Rachael Yuson Williams part of?

Dr. Williams is linked to Grossman Plastic Surgery. Dmand AI links Dr. Williams to 1 more medical group.

Does Dr. Rachael Yuson Williams accept Medicare?

Yes. CMS data shows Dr. Williams billed Medicare for 959 services in 2024, and Dr. Williams accepts Medicare assignment.

How many Medicare patients does Dr. Rachael Yuson Williams see?

CMS counts 106 Medicare patients who saw Dr. Williams in 2024, with an average age of 71.

Show 9 more questionsShow fewer questions

Is Dr. Rachael Yuson Williams board certified?

Yes. Dr. Williams is board certified in surgery by the American Board of Surgery.

What services does Dr. Rachael Yuson Williams bill to Medicare?

In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99213), surgery: skin and soft tissue (17250) and special service (99183).

Where did Dr. Rachael Yuson Williams go to medical school?

Dr. Williams graduated from Boston University School Of Medicine in 2009.

What drugs does Dr. Rachael Yuson Williams prescribe most?

In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Doxycycline Hyclate, Levofloxacin and Clindamycin HCl.

Has Dr. Rachael Yuson Williams received payments from drug or device companies?

CMS Open Payments shows $17,317 in general payments to Dr. Williams from 14 companies from 2016 to 2025. The largest total came from KCI USA, Inc.

How long has Dr. Rachael Yuson Williams been practicing?

Dr. Williams graduated from medical school in 2009, 17 years ago.

Does Dr. Rachael Yuson Williams do research?

Dmand AI links 7 publications to Dr. Williams, published from 2016 to 2020.

Who does Dr. Rachael Yuson Williams publish with?

Dr. Williams' most frequent co-authors are Juvonda S. Hodge, MD (1 shared paper) and Jeromy Ryan Patterson, MD (1 shared paper).

What insurance does Dr. Rachael Yuson Williams accept?

Dr. Williams is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

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