Katherine Thyssen, DO
Geriatric Medicine (Internal Medicine) Physician · Reno, NV
Katherine Thyssen, DO is a geriatric medicine (internal medicine) physician with a practice address in Reno, Nevada, and NPI 1790191955, issued on Jul 9, 2014. Check the license (Nevada DO2531, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katherine Thyssen
- Credential
- DO
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- DO2531 NV
Self-reported in NPPES; status is on the state search - Practice location
- 740 Del Monte LN Ste 3, Reno, NV 89511
- Phone
- (775) 982-5000
- Enumerated
- Jul 9, 2014
- Record last updated
- May 7, 2024
- Fax
- (775) 982-3900
- Medicare enrollment
- Enrolled (PECOS I20190709002134); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 740 Del Monte LN Ste 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eithne-Marie Barton, D.O.Family Medicine Physician1861686644
- Dominique Joseph, MDGeriatric Medicine (Family Medicine) Physician1609459924
- Silvija Larsen, FNPFamily Nurse Practitioner1174291009
- Julie Silverhart, M.D.Geriatric Medicine (Family Medicine) Physician1831146737
- Suzanne Zsikla, MDInternal Medicine Physician1629041702
Verify Katherine Thyssen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO2531Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024
9,847 Medicare Part D claims for 989 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 197 claims were for opioids.
Most prescribed
- Levothyroxine Sodium531 claims
- Rosuvastatin Calcium506 claims
- Atorvastatin Calcium491 claims
- Losartan Potassium355 claims
- Gabapentin330 claims
- Amlodipine Besylate305 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 one group practice
- Hometown Health Management CompanyReno, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Nevada
There are 34 geriatric medicine (internal medicine) physician records in Nevada.
Other geriatric medicine (internal medicine) physician records in Nevada
- Shanna Marie Baltar, DOLas Vegas, NV1205251840
- Michael Brigoli, MDNorth Las Vegas, NV1821551151
- Vincent Chu, MDLas Vegas, NV1649299470
- Sophie Chwa, M.D.Las Vegas, NV1548556897
- Kelly Conright, MDNorth Las Vegas, NV1467554238
- Leonardo Gan-Lim, M.D.Las Vegas, NV1134180839
- Laurence Gay, MDReno, NV1639254170
- Jeffrey Gingold, M.D.Reno, NV1053405282
- Clarence Grim, M.D.Las Vegas, NV1760404768
- Barnali Gupta, M.D.Reno, NV1881698421
Common questions
What is Katherine Thyssen, DO's NPI number?
Katherine Thyssen, DO's National Provider Identifier (NPI) is 1790191955, issued on Jul 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Thyssen, DO located?
The NPPES record lists a practice address at 740 Del Monte LN Ste 3, Reno, NV, 89511. Phone: (775) 982-5000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Thyssen, DO's license?
NPPES lists Nevada license number DO2531, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Thyssen, DO prescribe under Medicare Part D?
In 2024, Katherine Thyssen, DO had 9,847 Medicare Part D claims for 989 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.