Dr. James S. Iwakiri, MD
- Medicare services, 2024
- 7,403
- Medicare patients, 2024
- 667
- Part D claims, 2024
- 2,545
- MIPS score, 2024
- 81
- Hospital affiliations
- 5
- Practice address
- 1000 Oakleaf Way, Altoona, WI 54720
- Practice phone
- Call (715) 895-9435
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Iwakiri'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 S. Iwakiri is a urologist in Altoona, Wisconsin
Dr. Iwakiri practices at OakLeaf Surgical Hospital in Altoona, Wisconsin, part of Surgery Partners.
Dr. Iwakiri's NPI, 1972689057, was assigned on October 31, 2006. Dr. Iwakiri graduated from Stanford University School of Medicine in 1994. Dr. Iwakiri holds Wisconsin license 35227-020.
- NPI
- 1972689057NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729170196
- NPI enumeration date
- October 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 895-9435
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James S. Iwakiri practices at OakLeaf Surgical Hospital in Altoona, Wisconsin
Dr. Iwakiri's primary practice is OakLeaf Surgical Hospital, at 1000 Oakleaf Way, Altoona, WI 54720 in Eau Claire County. The practice phone is (715) 895-9435.
- OakLeaf Surgical Hospital1000 Oakleaf Way, Altoona, WI 54720 · Eau Claire CountyPhone(715) 895-9435
Source: Dmand AI Affiliation Data
Dr. James S. Iwakiri is affiliated with 9 sites of care and 4 medical groups
Dr. Iwakiri's primary practice is OakLeaf Surgical Hospital in Altoona, Wisconsin, part of Surgery Partners. Dr. Iwakiri is also affiliated with Marshfield Medical Center - Marshfield. The medical group on file is Western Wisconsin Urology. Dmand AI also links Dr. Iwakiri to 3 more hospitals, 4 group practices and clinics and 3 medical groups, 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 S. Iwakiri's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Iwakiri practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OakLeaf Surgical Hospital | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Surgery Partners and 6.2K+ hospitals, with verified contacts in the same login.
Dr. James S. Iwakiri is one of 213 urologists in Wisconsin
Urology is Dr. Iwakiri's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Iwakiri is licensed in Wisconsin.
Specialties and state licenses
- Urology, WisconsinPrimary
Urologists near Dr. Iwakiri
Counts of urologists 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 S. Iwakiri billed Medicare for 7,403 services in 2024
CMS data shows 7,403 Medicare services from Dr. Iwakiri across 24 procedure codes in 2024, for 667 Medicare patients. Medicare paid $228,133 for them.
Dr. Iwakiri's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 5,6282024: 5,4823%
- Office and hospital visits
- 2023: 9562024: 9392%
- Surgery
- 2023: 4752024: 4525%
- Lab and pathology
- 2023: 2782024: 2578%
- Other services
- 2023: 02024: 116
- Tests and treatments
- 2023: 1082024: 1135%
- Imaging
- 2023: 492024: 4410%
Where Dr. Iwakiri's Medicare services took place, 2024
- In an office7,388100%
- In a facility150%
Dr. Iwakiri compared with the Wisconsin median for urologists, 2024
- Dr. Iwakiri
- Wisconsin median
- Medicare services
- 7,403vs 56313.1 times
- Medicare patients
- 667vs 2882.3 times
- Part D claims
- 2,395vs 5504.4 times
Medians across 215 urologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Iwakiri'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. Iwakiri and other urologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James S. Iwakiri treated 667 Medicare patients in 2024, average age 74
CMS counts 667 Medicare patients who saw Dr. Iwakiri in 2024. The largest group is 65 to 74, with 313 patients. 74% of them have high blood pressure, and 70% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Iwakiri's median patient age at 71, with 21% women.
Dr. Iwakiri's Medicare patients by age, 2024
Dr. Iwakiri's Medicare patients by sex, 2024
- Women14221%
- Men52579%
Chronic conditions among Dr. Iwakiri's Medicare patients, 2024
- High blood pressure74%
- High cholesterol70%
- Cancer40%
- Arthritis36%
- Ischemic heart disease27%
- Chronic kidney disease26%
- Diabetes26%
- Atrial fibrillation20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Iwakiri's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women21%
- Men78%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James S. Iwakiri wrote 2,545 Medicare Part D claims in 2024
In 2024, Dr. Iwakiri wrote 2,545 Medicare Part D claims for 573 patients. 87% of them were for generic drugs. CMS names the drug for 2,395 of them, across 38 drugs with 11 or more claims each, at $1,314,863 in total drug cost. In 2023, CMS named 2,071 claims across 39 drugs.
Dr. Iwakiri's Part D claims by kind of drug, 2024
- Generic2,226 claims87%
- Brand-name and other319 claims13%
Dr. Iwakiri's 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. Iwakiri's Part D claims, 2024
- Opioids5%127 of 2,545 claims
- Antibiotics17%422 of 2,545 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: 2,0712024: 2,39516%
Drugs named by CMS: 38 in 2024, 39 in 2023.
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 S. Iwakiri scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Iwakiri for performance year 2024, reported as part of a group. Dr. Iwakiri accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 26 procedures of prostate resection by Dr. Iwakiri, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Iwakiri's MIPS scores, performance year 2024
- 81of 100Final score
- 55.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Iwakiri ranks in Medicare procedure volume
- Prostate resection
- 88th percentile26 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. James S. Iwakiri received $6,539 in industry payments from 2016 to 2025
CMS Open Payments shows 238 general payments to Dr. Iwakiri from 45 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Bluewind Medical paid the most, $1,037.
General payments to Dr. Iwakiri by program year, 2016 to 2025
General payments to Dr. Iwakiri by kind, 2016 to 2025
- Food and beverage$4,30766%
- Travel and lodging$1,03716%
- Education$1,01115%
- Gifts$1843%
Companies that paid Dr. Iwakiri the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James S. Iwakiri graduated from Stanford University School of Medicine
Dr. Iwakiri graduated from Stanford University School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James S. Iwakiri'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)Clinician Public Reporting: Overall MIPS Performance (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 S. Iwakiri
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 S. Iwakiri's NPI number?
Dr. James S. Iwakiri's NPI number is 1972689057. It was assigned on October 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James S. Iwakiri?
Dr. James S. Iwakiri is a urologist in Altoona, Wisconsin. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. James S. Iwakiri practice?
Dr. Iwakiri practices at 1000 Oakleaf Way, Altoona, WI 54720. Dr. Iwakiri's primary practice is OakLeaf Surgical Hospital in Altoona, Wisconsin, part of Surgery Partners. Dmand AI also links Dr. Iwakiri to 3 hospitals, 4 group practices and clinics and 3 medical groups.
What is Dr. James S. Iwakiri's office phone number?
The practice phone on file for Dr. Iwakiri is (715) 895-9435.
What is Dr. James S. Iwakiri's medical license number?
Dr. Iwakiri holds Wisconsin license 35227-020.
Which hospitals is Dr. James S. Iwakiri affiliated with?
Dr. Iwakiri practices at OakLeaf Surgical Hospital in Altoona, Wisconsin. Dr. Iwakiri is also affiliated with Marshfield Medical Center - Marshfield. Dmand AI links Dr. Iwakiri to 3 more hospitals.
What medical group is Dr. James S. Iwakiri part of?
Dr. Iwakiri is linked to Western Wisconsin Urology. Dmand AI links Dr. Iwakiri to 3 more medical groups.
Does Dr. James S. Iwakiri accept Medicare?
Yes. CMS data shows Dr. Iwakiri billed Medicare for 7,403 services in 2024, and Dr. Iwakiri accepts Medicare assignment.
What is Dr. James S. Iwakiri's MIPS score?
Dr. Iwakiri's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. James S. Iwakiri see?
CMS counts 667 Medicare patients who saw Dr. Iwakiri in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. James S. Iwakiri bill to Medicare?
In 2024, Dr. Iwakiri's most billed Medicare services were injected or infused drug (J0897), injected or infused drug (J0585) and office visit, established patient (99213).
Where did Dr. James S. Iwakiri go to medical school?
Dr. Iwakiri graduated from Stanford University School of Medicine in 1994.
What drugs does Dr. James S. Iwakiri prescribe most?
In 2024 Medicare Part D data, Dr. Iwakiri's most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Myrbetriq.
Has Dr. James S. Iwakiri received payments from drug or device companies?
CMS Open Payments shows $6,539 in general payments to Dr. Iwakiri from 45 companies from 2016 to 2025. The largest total came from Bluewind Medical.
How long has Dr. James S. Iwakiri been practicing?
Dr. Iwakiri graduated from medical school in 1994, 32 years ago.
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