Dr. James D. Larson, MD
- Medicare services, 2024
- 237
- Medicare patients, 2024
- 211
- Part D claims, 2024
- 42
- Hospital affiliations
- 1
- Industry payments
- $5,460
- Practice address
- 975 Port Washington Road, Grafton, WI 53024
- Practice phone
- Call (262) 329-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Larson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. James D. Larson is a general surgeon in Grafton, Wisconsin
Dr. Larson practices at Aurora Medical Center - Grafton in Grafton, Wisconsin, part of Advocate Health.
Dr. Larson's NPI, 1164632410, was assigned on May 23, 2007. Dr. Larson graduated from Medical College of Wisconsin in 2007. Dr. Larson holds Wisconsin license 60324.
- NPI
- 1164632410NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537317946
- NPI enumeration date
- May 23, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (262) 329-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James D. Larson practices at Aurora Medical Center - Grafton in Grafton, Wisconsin
Dr. Larson's primary practice is Aurora Medical Center - Grafton, at 975 Port Washington Road, Grafton, WI 53024 in Ozaukee County. The practice phone is (262) 329-1000.
- Aurora Medical Center - Grafton975 Port Washington Road, Grafton, WI 53024 · Ozaukee CountyPhone(262) 329-1000
Source: Dmand AI Affiliation Data
Dr. James D. Larson is affiliated with 2 sites of care and 3 medical groups
Dr. Larson's primary practice is Aurora Medical Center - Grafton in Grafton, Wisconsin, part of Advocate Health. The medical group on file is Aurora Medical Group. Dmand AI also links Dr. Larson to 2 more medical groups and 1 hospital outpatient department, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James D. Larson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aurora Medical Center - Grafton | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James D. Larson is one of 565 general surgeons in Wisconsin
Surgery is Dr. Larson's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Larson's licenses on file in 2 states: Wisconsin and Delaware.
Specialties and state licenses
- Surgery, WisconsinPrimary
- Delaware license
General surgeons near Dr. Larson
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. James D. Larson billed Medicare for 237 services in 2024
CMS data shows 237 Medicare services from Dr. Larson across 5 procedure codes in 2024, for 211 Medicare patients. Medicare paid $18,133 for them.
Dr. Larson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2242024: 224No change
- Surgery
- 2023: 02024: 13
Where Dr. Larson's Medicare services took place, 2024
- In an office15967%
- In a facility7833%
Dr. Larson compared with the Wisconsin median for general surgeons, 2024
- Dr. Larson
- Wisconsin median
- Medicare services
- 237vs 992.4 times
- Medicare patients
- 211vs 1002.1 times
- Part D claims
- 13vs 3765% below
Medians across 557 general surgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. Larson's 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Larson and other general surgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James D. Larson treated 211 Medicare patients in 2024, average age 73
CMS counts 211 Medicare patients who saw Dr. Larson in 2024. The largest group is 65 to 74, with 102 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.76, 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. Larson's median patient age at 67, with 42% women.
Dr. Larson's Medicare patients by age, 2024
Dr. Larson's Medicare patients by sex, 2024
- Women10047%
- Men11153%
Chronic conditions among Dr. Larson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis46%
- Chronic kidney disease36%
- Ischemic heart disease33%
- Mood disorders27%
- Anxiety26%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Larson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
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. James D. Larson wrote 42 Medicare Part D claims in 2024
In 2024, Dr. Larson wrote 42 Medicare Part D claims for 18 patients. 88% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $96 in total drug cost. In 2022, CMS named 32 claims across 2 drugs.
Dr. Larson's Part D claims by kind of drug, 2024
- Generic37 claims88%
- Brand-name and other5 claims12%
Dr. Larson's most prescribed drugs by claims, 2023
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. Larson's Part D claims, 2024
- Antibiotics45%19 of 42 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 322023: 1359%
Drugs named by CMS: 1 in 2023, 2 in 2022.
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 D. Larson ranks in the 89th percentile for hernia repair - groin (open) in Medicare
Dr. Larson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of hernia repair - groin (open) by Dr. Larson, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Larson ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 81st percentile15 procedures
- Hernia repair - groin (open)
- 89th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Spinal fusion: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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. James D. Larson received $5,460 in industry payments from 2016 to 2024
CMS Open Payments shows 15 general payments to Dr. Larson from 6 drug and device companies from 2016 to 2024. Education make up the largest share, 73% of the total. Intuitive Surgical, Inc. paid the most, $4,238.
General payments to Dr. Larson by program year, 2016 to 2024
General payments to Dr. Larson by kind, 2016 to 2024
- Education$4,00073%
- Travel and lodging$76014%
- Food and beverage$69913%
Companies that paid Dr. Larson the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James D. Larson graduated from Medical College of Wisconsin
Dr. Larson graduated from Medical College of Wisconsin in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James D. Larson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. James D. Larson
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 D. Larson's NPI number?
Dr. James D. Larson's NPI number is 1164632410. It was assigned on May 23, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. James D. Larson?
Dr. James D. Larson is a general surgeon in Grafton, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. James D. Larson practice?
Dr. Larson practices at 975 Port Washington Road, Grafton, WI 53024. Dr. Larson's primary practice is Aurora Medical Center - Grafton in Grafton, Wisconsin, part of Advocate Health. Dmand AI also links Dr. Larson to 2 medical groups and 1 hospital outpatient department.
What is Dr. James D. Larson's office phone number?
The practice phone on file for Dr. Larson is (262) 329-1000.
What is Dr. James D. Larson's medical license number?
Dr. Larson holds Wisconsin license 60324, one of the licenses on file in 2 states.
Which states has Dr. James D. Larson been licensed in?
Dmand AI has state licenses on file for Dr. Larson in Wisconsin and Delaware.
Which hospitals is Dr. James D. Larson affiliated with?
Dr. Larson practices at Aurora Medical Center - Grafton in Grafton, Wisconsin.
What medical group is Dr. James D. Larson part of?
Dr. Larson is linked to Aurora Medical Group. Dmand AI links Dr. Larson to 2 more medical groups.
Does Dr. James D. Larson accept Medicare?
Yes. CMS data shows Dr. Larson billed Medicare for 237 services in 2024, and Dr. Larson accepts Medicare assignment.
How many Medicare patients does Dr. James D. Larson see?
CMS counts 211 Medicare patients who saw Dr. Larson in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. James D. Larson bill to Medicare?
In 2024, Dr. Larson's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and hospital inpatient care (99232).
Where did Dr. James D. Larson go to medical school?
Dr. Larson graduated from Medical College of Wisconsin in 2007.
What drugs does Dr. James D. Larson prescribe most?
In 2023 Medicare Part D data, Dr. Larson's most prescribed drugs by claims were Ondansetron ODT.
Has Dr. James D. Larson received payments from drug or device companies?
CMS Open Payments shows $5,460 in general payments to Dr. Larson from 6 companies from 2016 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. James D. Larson been practicing?
Dr. Larson graduated from medical school in 2007, 19 years ago.
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