Dr. James Williard Dennis, MD

  • Jacksonville, FL
  • Vascular surgeon
NPI1760455828PAC ID4688858400
Medicare services, 2024
170
Medicare patients, 2024
155
Part D claims, 2024
41
Publications
189
MIPS score, 2024
60
Practice address
653 8th W St, Jacksonville, FL 32209
Practice phone
Call (904) 244-3500
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

University of Florida Jacksonville Physicians, Inc.

Jacksonville, Florida

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Dr. James Williard Dennis is a vascular surgeon in Jacksonville, Florida

Dr. Dennis practices at University of Florida Jacksonville Physicians, Inc. in Jacksonville, Florida.

Dr. Dennis' NPI, 1760455828, was assigned on February 9, 2006. Dr. Dennis graduated from Indiana University School Of Medicine in 1980. Dr. Dennis holds Florida license ME52194.

NPI and contact details
Medicare PAC ID
4688858400
NPI enumeration date
February 9, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(904) 244-3500
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
72
Medical school graduation
1980

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

Dr. James Williard Dennis practices at University of Florida Jacksonville Physicians, Inc. in Jacksonville, Florida

Dr. Dennis' primary practice is University of Florida Jacksonville Physicians, Inc., at 653 8th W St, Jacksonville, FL 32209 in Duval County. The practice phone is (904) 244-3500.

  • University of Florida Jacksonville Physicians, Inc.
    653 8th W St, Jacksonville, FL 32209 · Duval CountyPhone(904) 244-3500

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. James Williard Dennis is affiliated with 2 sites of care and 1 medical group

Dr. Dennis' primary practice is University of Florida Jacksonville Physicians, Inc. in Jacksonville, Florida. Dr. Dennis is also affiliated with UF Health Jacksonville. The medical group on file is UF Jacksonville Physicians, Inc.

See all 3 affiliations for Dr. Dennis

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. James Williard Dennis' practice

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

EHR by site
SiteEHR vendor and product
University of Florida Jacksonville Physicians, Inc.Available with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. James Williard Dennis is one of 337 vascular surgeons in Florida

Vascular surgery is Dr. Dennis' primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Dennis is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Dennis' licenses on file in 2 states: Florida and Illinois.

Specialties and state licenses

  • Vascular surgery, FloridaPrimaryLicense ME52194 · 1988 to 2027 · taxonomy 2086S0129X
  • Illinois license1982 to 1990

Clinical focus

Dmand AI lists arterial blot clot /embolism, blood vessel access for dialysis, carotid revascularization, chronic skin ulcer, deep vein thrombosis (DVT), heart device and aorta surgery, peripheral vascular disease and varicose veins among the conditions Dr. Dennis treats.

Vascular surgeons near Dr. Dennis

Counts of vascular 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. James Williard Dennis billed Medicare for 170 services in 2024

CMS data shows 170 Medicare services from Dr. Dennis across 7 procedure codes in 2024, for 155 Medicare patients. Medicare paid $7,382 for them.

Medicare services, 2024170
Medicare patients155
Paid by Medicare$7,382
Procedure codes7

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

  • 2023
  • 2024
Office and hospital visits
2023: 812024: 10125%
Tests and treatments
2023: 822024: 6916%

Where Dr. Dennis' Medicare services took place, 2024

  • In an office3822%
  • In a facility13278%

Dr. Dennis compared with the Florida median for vascular surgeons, 2024

  • Dr. Dennis
  • Florida median
Medicare services
170vs 67875% below
Medicare patients
155vs 29648% below
Part D claims
17vs 8881% below

Medians across 320 vascular surgeons in Florida with Dmand AI profiles that report each measure.

Dr. Dennis' 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.

See all procedures by Dr. Dennis

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

Dr. James Williard Dennis treated 155 Medicare patients in 2024, average age 70

CMS counts 155 Medicare patients who saw Dr. Dennis in 2024. The largest group is 65 to 74, with 62 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 3.36, 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. Dennis' median patient age at 70, with 29% women.

Medicare patients, 2024155
Average age70
Average risk score3.36
Also on Medicaid40%

Dr. Dennis' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Dennis' Medicare patients by sex, 2024

  • Women6240%
  • Men9360%

Chronic conditions among Dr. Dennis' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes62%
  4. Ischemic heart disease61%
  5. Chronic kidney disease57%
  6. Arthritis56%
  7. Heart failure45%
  8. Mood disorders41%

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

Dr. Dennis' patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women29%
  • Men71%

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

Dr. James Williard Dennis wrote 41 Medicare Part D claims in 2024

In 2024, Dr. Dennis wrote 41 Medicare Part D claims for 13 patients. 90% of them were for generic drugs. CMS names the drug for 17 of them, across 1 drug with 11 or more claims each, at $145 in total drug cost. In 2021, CMS named 14 claims across 1 drug.

Part D claims, 202441
Drugs named by CMS1
Total drug cost$145
Part D patients13

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

  • Generic37 claims90%
  • Brand-name and other4 claims10%

Dr. Dennis' 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.

Part D claims for drugs CMS names, 2021 to 2024

  • 2021
  • 2024
Claims for drugs CMS names
2021: 142024: 1721%

Drugs named by CMS: 1 in 2024, 1 in 2021.

See all prescribing by Dr. Dennis

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. James Williard Dennis scored 60 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 60 out of 100 for Dr. Dennis for performance year 2024, reported through an alternative payment model (APM). Dr. Dennis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Dennis' MIPS scores, performance year 2024

  • 60of 100Final score
  • 59.9of 100Quality
  • 0of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. James Williard Dennis has 189 publications on record

Dmand AI links 189 papers to Dr. Dennis, published from 2002 to 2023. 2014 was the busiest year, with 6. The most frequent topics are Cell Line, Molecular Sequence Data and N-Acetylglucosaminyltransferases. Dr. Dennis has published most often in Cancer Res. Dr. Dennis' most frequent co-authors are Michael Demetriou, MD, Henry C. Veldenz, MD and Jon Christian Allmon, MD.

Papers189
Years published2002 to 2023

Dr. Dennis' papers by year, 2013 to 2023

Topics Dr. Dennis writes about most

  • Cell Line
  • Molecular Sequence Data
  • N-Acetylglucosaminyltransferases
  • Glycosylation
  • Neoplasm Metastasis
  • Oligosaccharides
  • Polysaccharides
  • Tumor Cells, Cultured

Dr. Dennis' most frequent co-authors

Recent publications by Dr. Dennis

See all 189 publications and co-authors

See who Dr. Dennis researches with

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

How network discovery works

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

Dr. James Williard Dennis received $7,198 in industry payments from 2016 to 2024

CMS Open Payments shows 57 general payments to Dr. Dennis from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 76% of the total. W. L. Gore & Associates, Inc. paid the most, $4,617.

General payments to Dr. Dennis by program year, 2016 to 2024

General payments to Dr. Dennis by kind, 2016 to 2024

$7.2Kin total
  • Food and beverage$5,45776%
  • Travel and lodging$1,74124%

Companies that paid Dr. Dennis the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Dennis

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

Dr. James Williard Dennis has 1 award and honors on record

Dmand AI lists 1 award for Dr. Dennis.

Awards and honors for Dr. Dennis

  1. Undated
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. James Williard Dennis graduated from Indiana University School Of Medicine

Dr. Dennis graduated from Indiana University School Of Medicine in 1980. Dr. Dennis is a member of ACS and SVS.

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

Source: Dmand AI Professional Profile Data

Dr. James Williard Dennis accepts plans from 17 insurance carriers

Dr. Dennis is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.

  • Elevance
  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Aspirus Health Plan
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • +9 more carriersWith a free account

Plan types Dr. Dennis accepts, by number of carriers

  1. PPO11
  2. Medicare9
  3. HMO7
  4. POS5
  5. EPO4
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. James Williard Dennis'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Clinician Public Reporting: Overall MIPS Performance (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)
Awards and committee rolesDmand AI Professional Profile Data
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. James Williard Dennis

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. James Williard Dennis' NPI number?

Dr. James Williard Dennis' NPI number is 1760455828. It was assigned on February 9, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. James Williard Dennis?

Dr. James Williard Dennis is a vascular surgeon in Jacksonville, Florida. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).

Where does Dr. James Williard Dennis practice?

Dr. Dennis practices at 653 8th W St, Jacksonville, FL 32209. Dr. Dennis' primary practice is University of Florida Jacksonville Physicians, Inc. in Jacksonville, Florida.

What is Dr. James Williard Dennis' office phone number?

The practice phone on file for Dr. Dennis is (904) 244-3500.

What is Dr. James Williard Dennis' medical license number?

Dr. Dennis holds Florida license ME52194, one of the licenses on file in 2 states.

Which states has Dr. James Williard Dennis been licensed in?

Dmand AI has state licenses on file for Dr. Dennis in Florida (1988 to 2027) and Illinois (1982 to 1990).

Which hospitals is Dr. James Williard Dennis affiliated with?

Dr. Dennis is affiliated with UF Health Jacksonville.

What medical group is Dr. James Williard Dennis part of?

Dr. Dennis is linked to UF Jacksonville Physicians, Inc.

Does Dr. James Williard Dennis accept Medicare?

Yes. CMS data shows Dr. Dennis billed Medicare for 170 services in 2024, and Dr. Dennis accepts Medicare assignment.

What is Dr. James Williard Dennis' MIPS score?

Dr. Dennis' MIPS final score for performance year 2024 is 60 out of 100, reported through an alternative payment model (APM).

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. James Williard Dennis see?

CMS counts 155 Medicare patients who saw Dr. Dennis in 2024, with an average age of 70.

Is Dr. James Williard Dennis board certified?

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

What services does Dr. James Williard Dennis bill to Medicare?

In 2024, Dr. Dennis' most billed Medicare services were blood vessel study (93923), blood vessel study (93922) and hospital inpatient care (99232).

Where did Dr. James Williard Dennis go to medical school?

Dr. Dennis graduated from Indiana University School Of Medicine in 1980.

What drugs does Dr. James Williard Dennis prescribe most?

In 2024 Medicare Part D data, Dr. Dennis' most prescribed drugs by claims were Clopidogrel.

Has Dr. James Williard Dennis received payments from drug or device companies?

CMS Open Payments shows $7,198 in general payments to Dr. Dennis from 4 companies from 2016 to 2024. The largest total came from W. L. Gore & Associates, Inc.

How long has Dr. James Williard Dennis been practicing?

Dr. Dennis graduated from medical school in 1980, 46 years ago.

Does Dr. James Williard Dennis do research?

Dmand AI links 189 publications to Dr. Dennis, published from 2002 to 2023.

Who does Dr. James Williard Dennis publish with?

Dr. Dennis' most frequent co-authors are Michael Demetriou, MD (15 shared papers), Henry C. Veldenz, MD (8 shared papers) and Jon Christian Allmon, MD (3 shared papers).

What insurance does Dr. James Williard Dennis accept?

Dr. Dennis is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.

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