Erin C. Lassanske, NP
- Medicare patients, 2024
- 53
- Part D claims, 2024
- 1,245
- Hospital affiliations
- 2
- Industry payments
- $335
- Medical group
- 1
- Practice address
- 400 W River Woods Pkwy, Milwaukee, WI 53212
- Practice phone
- Call (414) 465-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ascension Medical Group
Milwaukee, Wisconsin
Find Erin Lassanske'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.
Erin C. Lassanske is a family nurse practitioner in Milwaukee, Wisconsin
Erin Lassanske practices at Ascension Medical Group in Milwaukee, Wisconsin.
Erin Lassanske's NPI, 1235135559, was assigned on June 22, 2005. Erin Lassanske holds Wisconsin license 2564-33.
- NPI
- 1235135559NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274501861
- NPI enumeration date
- June 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (414) 465-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Erin C. Lassanske practices at Ascension Medical Group in Milwaukee, Wisconsin
Erin Lassanske's primary practice is Ascension Medical Group, at 400 W River Woods Pkwy, Milwaukee, WI 53212 in Milwaukee County. The practice phone is (414) 465-3000.
- Ascension Medical Group400 W River Woods Pkwy, Milwaukee, WI 53212 · Milwaukee CountyPhone(414) 465-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Erin C. Lassanske is affiliated with 4 sites of care and 1 medical group
Erin Lassanske's primary practice is Ascension Medical Group in Milwaukee, Wisconsin. Erin Lassanske is also affiliated with Ascension SE Wisconsin Hospital - St. Joseph. The medical group on file is Ascension Medical Group. Dmand AI also links Erin Lassanske to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Erin C. Lassanske's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Erin Lassanske practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Medical Group | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Erin C. Lassanske is one of 2,261 family nurse practitioners in Wisconsin
Family is Erin Lassanske's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Erin Lassanske is licensed in Wisconsin.
Specialties and state licenses
- Family nurse practitioner, WisconsinPrimary
Family nurse practitioners near Erin Lassanske
Counts of family nurse practitioners 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
Erin C. Lassanske treated 53 Medicare patients in 2024, average age 81
CMS counts 53 Medicare patients who saw Erin Lassanske in 2024. The largest group is 75 to 84, with 20 patients. 75% of them have atrial fibrillation, and 75% have high blood pressure. Their average risk score is 1.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Erin Lassanske's median patient age at 74, with 43% women.
Erin Lassanske's Medicare patients by age, 2024
Erin Lassanske's Medicare patients by sex, 2024
- Women2343%
- Men3057%
Chronic conditions among Erin Lassanske's Medicare patients, 2024
- Atrial fibrillation75%
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Ischemic heart disease42%
- Chronic kidney disease38%
- Heart failure34%
- Diabetes32%
Share of Medicare patients with each condition. A patient can have several.
Erin Lassanske's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Erin C. Lassanske wrote 1,245 Medicare Part D claims in 2024
In 2024, Erin Lassanske wrote 1,245 Medicare Part D claims for 361 patients. 72% of them were for generic drugs.
Erin Lassanske's Part D claims by kind of drug, 2024
- Generic900 claims72%
- Brand-name345 claims28%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Erin C. Lassanske takes part in Medicare
Erin Lassanske accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Erin C. Lassanske received $335 in industry payments in 2025
CMS Open Payments shows 4 general payments to Erin Lassanske from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. HeartFlow, Inc. paid the most, $224.
Companies that paid Erin Lassanske the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Erin C. Lassanske'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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 (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) |
| 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 Erin C. Lassanske
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Erin C. Lassanske's NPI number?
Erin C. Lassanske's NPI number is 1235135559. It was assigned on June 22, 2005, and it is active in the NPI Registry.
What does Erin C. Lassanske specialize in?
Erin C. Lassanske is a family nurse practitioner in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Erin C. Lassanske practice?
Erin Lassanske practices at 400 W River Woods Pkwy, Milwaukee, WI 53212. Erin Lassanske's primary practice is Ascension Medical Group in Milwaukee, Wisconsin. Dmand AI also links Erin Lassanske to 1 hospital and 1 group practice or clinic.
What is Erin C. Lassanske's office phone number?
The practice phone on file for Erin Lassanske is (414) 465-3000.
What is Erin C. Lassanske's medical license number?
Erin Lassanske holds Wisconsin license 2564-33.
Which hospitals is Erin C. Lassanske affiliated with?
Erin Lassanske is affiliated with Ascension SE Wisconsin Hospital - St. Joseph. Dmand AI links Erin Lassanske to 1 more hospital.
What medical group is Erin C. Lassanske part of?
Erin Lassanske is linked to Ascension Medical Group.
Does Erin C. Lassanske accept Medicare?
Yes. CMS lists Erin Lassanske as accepting Medicare assignment.
How many Medicare patients does Erin C. Lassanske see?
CMS counts 53 Medicare patients who saw Erin Lassanske in 2024, with an average age of 81.
Has Erin C. Lassanske received payments from drug or device companies?
CMS Open Payments shows $335 in general payments to Erin Lassanske from 2 companies from 2025 to 2025. The largest total came from HeartFlow, Inc.
How long has Erin C. Lassanske been practicing?
Erin Lassanske graduated from medical school in 2004, 22 years ago.
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