Kristin K. Cassidy, MD
Internal Medicine Physician · Twin Lakes, WI
Kristin K. Cassidy, MD is an internal medicine physician with a practice address in Twin Lakes, Wisconsin, and NPI 1366451411, issued on Aug 7, 2006. Check the license (Wisconsin 40094, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Kristin K. Cassidy
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40094 WI
Self-reported in NPPES; status is on the state search - Practice location
- 150 Lance Dr, Twin Lakes, WI 53181
- Phone
- (262) 877-2124
- Enumerated
- Aug 7, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (262) 877-9833
- Medicaid ID
- 34012400 WI
- Medicare enrollment
- Enrolled (PECOS I20100618000823); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Verify Kristin K. Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 40094Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,642 Medicare Part D claims for 561 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 163 claims were for opioids.
Most prescribed
- Levothyroxine Sodium453 claims
- Atorvastatin Calcium394 claims
- Amlodipine Besylate389 claims
- Omeprazole289 claims
- Lisinopril231 claims
- Losartan Potassium215 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Advantage Physical Therapy And Sports Rehab, LLCBurlington, WI
- Aurora Medical Group, Inc.Twin Lakes, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kristin K. Cassidy among 2,078 internal medicine physician records in Wisconsin
Kristin K. Cassidy, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1997 · median 2002 among the 1,098 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 internal medicine physician record lists a practice address in Twin Lakes
They are 1 of the 40 NPPES records with a practice address in Twin Lakes, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Twin Lakes → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aileen Benjakul, MDUnion Grove, WI 531821669491130
- Anne Schlimgen, MDUnion Grove, WI 531821003921289
- Osman Ahmedtaha, M.D.Mount Pleasant, WI 531771598140105
- Satish Lahiri, MDWaterford, WI 531851619026994
- Srinivasa Pamulapati, MD.Mount Pleasant, WI 531771487632196
- Alok Srivastava, MDWaterford, WI 531851568418937
- Margaret BarrettWaukesha, WI 531861912161647
- Bruce Berry, M.D.Waukesha, WI 531861710065230
Common questions
What is Kristin K. Cassidy, MD's NPI number?
Kristin K. Cassidy, MD's National Provider Identifier (NPI) is 1366451411, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kristin K. Cassidy, MD located?
The NPPES record lists a practice address at 150 Lance Dr, Twin Lakes, WI, 53181. Phone: (262) 877-2124. Providers update this record themselves, so call before visiting.
How can I verify Kristin K. Cassidy, MD's license?
NPPES lists Wisconsin license number 40094, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kristin K. Cassidy, MD prescribe under Medicare Part D?
In 2024, Kristin K. Cassidy, MD had 8,642 Medicare Part D claims for 561 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.