Dr. Gosta W. Iwasiuk, MD
- Medicare services, 2017
- 61
- Part D claims, 2024
- 14
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $1,105
- Practice address
- 147 North Brent Street, Ventura, CA 93003
- Practice phone
- Call (805) 652-5011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Iwasiuk'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. Gosta W. Iwasiuk is a general surgeon in Ventura, California
Dr. Iwasiuk practices at Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare.
Dr. Iwasiuk's NPI, 1114023249, was assigned on September 16, 2006. Dr. Iwasiuk holds California license A22839.
- NPI
- 1114023249NPI Registry (opens in a new tab)
- NPI enumeration date
- September 16, 2006
- NPI status
- Active
- Practice phone
- (805) 652-5011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gosta W. Iwasiuk practices at Community Memorial Hospital - Ventura in Ventura, California
Dr. Iwasiuk's 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.
- Community Memorial Hospital - Ventura147 North Brent Street, Ventura, CA 93003 · Ventura CountyPhone(805) 652-5011
Source: Dmand AI Affiliation Data
Dr. Gosta W. Iwasiuk is affiliated with 3 sites of care and 3 medical groups
Dr. Iwasiuk's primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. The medical group on file is Community Memorial Healthcare. Dmand AI also links Dr. Iwasiuk to 2 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Iwasiuk's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gosta W. Iwasiuk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Iwasiuk practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Community Memorial Hospital - Ventura | Available with a free account |
| +2 more sites and 2 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 Community Memorial Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gosta W. Iwasiuk is one of 2,926 general surgeons in California
Surgery is Dr. Iwasiuk's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Iwasiuk is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Iwasiuk
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. Gosta W. Iwasiuk billed Medicare for 61 services in 2017
CMS data shows 61 Medicare services from Dr. Iwasiuk across 4 procedure codes in 2017. Medicare paid $5,160 for them.
Dr. Iwasiuk's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 432017: 479%
- Surgery
- 2016: 02017: 14
Where Dr. Iwasiuk's Medicare services took place, 2017
- In an office4777%
- In a facility1423%
Dr. Iwasiuk compared with the California median for general surgeons, 2017
- Dr. Iwasiuk
- California median
- Medicare services
- 61vs 16663% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Iwasiuk's most billed Medicare procedure codes, 2017
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. Iwasiuk and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gosta W. Iwasiuk's patients have a median age of 81
Across all payers, Dmand AI patient panel data puts Dr. Iwasiuk's median patient age at 81, with 50% women.
Dr. Iwasiuk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Gosta W. Iwasiuk wrote 14 Medicare Part D claims in 2024
In 2024, Dr. Iwasiuk wrote 14 Medicare Part D claims. 93% of them were for generic drugs.
Dr. Iwasiuk's Part D claims by kind of drug, 2024
- Generic13 claims93%
- Brand-name and other1 claims7%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Gosta W. Iwasiuk has 2 publications on record
Dmand AI links 2 papers to Dr. Iwasiuk in 2017. 2017 was the busiest year, with 2. Dr. Iwasiuk's most frequent co-author is Michael D. Sparkuhl, MD.
Dr. Iwasiuk's most frequent co-authors
Recent publications by Dr. Iwasiuk
See who Dr. Iwasiuk researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Iwasiuk works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gosta W. Iwasiuk received $1,105 in industry payments from 2016 to 2020
CMS Open Payments shows 19 general payments to Dr. Iwasiuk from 10 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Intuitive Surgical, Inc. paid the most, $214.
General payments to Dr. Iwasiuk by program year, 2016 to 2020
Companies that paid Dr. Iwasiuk the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gosta W. Iwasiuk'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Gosta W. Iwasiuk
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. Gosta W. Iwasiuk's NPI number?
Dr. Gosta W. Iwasiuk's NPI number is 1114023249. It was assigned on September 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gosta W. Iwasiuk?
Dr. Gosta W. Iwasiuk is a general surgeon in Ventura, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gosta W. Iwasiuk practice?
Dr. Iwasiuk practices at 147 North Brent Street, Ventura, CA 93003. Dr. Iwasiuk's primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. Dmand AI also links Dr. Iwasiuk to 2 group practices and clinics and 2 medical groups.
What is Dr. Gosta W. Iwasiuk's office phone number?
The practice phone on file for Dr. Iwasiuk is (805) 652-5011.
What is Dr. Gosta W. Iwasiuk's medical license number?
Dr. Iwasiuk holds California license A22839.
Which hospitals is Dr. Gosta W. Iwasiuk affiliated with?
Dr. Iwasiuk practices at Community Memorial Hospital - Ventura in Ventura, California.
What medical group is Dr. Gosta W. Iwasiuk part of?
Dr. Iwasiuk is linked to Community Memorial Healthcare. Dmand AI links Dr. Iwasiuk to 2 more medical groups.
Does Dr. Gosta W. Iwasiuk accept Medicare?
Yes. CMS data shows Dr. Iwasiuk billed Medicare for 61 services in 2017.
What services does Dr. Gosta W. Iwasiuk bill to Medicare?
In 2017, Dr. Iwasiuk's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and surgery: digestive system (45380).
Has Dr. Gosta W. Iwasiuk received payments from drug or device companies?
CMS Open Payments shows $1,105 in general payments to Dr. Iwasiuk from 10 companies from 2016 to 2020. The largest total came from Intuitive Surgical, Inc.
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How long has Dr. Gosta W. Iwasiuk been practicing?
Dr. Iwasiuk's NPI was assigned in 2006.
Does Dr. Gosta W. Iwasiuk do research?
Dmand AI links 2 publications to Dr. Iwasiuk.
Who does Dr. Gosta W. Iwasiuk publish with?
Dr. Iwasiuk's most frequent co-authors are Michael D. Sparkuhl, MD (1 shared paper).
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