Lorissa Esther Klaus, M.D.
Family Medicine Physician · Portland, OR
Lorissa Esther Klaus, M.D. is a family medicine physician with a practice address in Portland, Oregon, and NPI 1831296979, issued on Sep 20, 2006. Check the license (Oregon MD24689, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Lorissa Esther Klaus
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD24689 OR
Self-reported in NPPES; status is on the state search - Practice location
- 19500 SE Stark St, Portland, OR 97233
- Phone
- (503) 669-3962
- Enumerated
- Sep 20, 2006
- Record last updated
- Feb 1, 2022
- Medicare enrollment
- Enrolled (PECOS I20071218000251); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 19500 SE Stark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Merrill Ahrens, MDInternal Medicine Physician1194839225
- Christopher Alaka, RPH, C.C.R.APharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1083982706
- Nicolle AsencioFamily Nurse Practitioner1225753692
- Richard Babal, MANAGEROptician1295824282
- Thomas Beaver, M.D.Internal Medicine Physician1215019112
- Jennifer Bishop, MDInternal Medicine Physician1548284557
Verify Lorissa Esther Klaus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD24689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average family medicine physician in 2024
3,825 Medicare Part D claims for 426 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 228 claims were for opioids.
Most prescribed
- Atorvastatin Calcium285 claims
- Losartan Potassium193 claims
- Levothyroxine Sodium168 claims
- Amlodipine Besylate148 claims
- Lisinopril140 claims
- Hydrocodone-Acetaminophen119 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
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lorissa Esther Klaus among 2,847 family medicine physician records in Oregon
Lorissa Esther Klaus, M.D. is one of 2,847 family medicine physician records with a practice address in Oregon. 75% 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, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1997 · median 2009 among the 1,671 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
561 family medicine physician records list a practice address in Portland
They are 561 of the 42,088 NPPES records with a practice address in Portland, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Susanne Bobenrieth, M.D.Portland, OR 972331871577742
- Anong Burke, MDPortland, OR 972331932205556
- Daniel Copp, MDPortland, OR 972331093903700
- Audrey Crist, MDPortland, OR 972331790888907
- Peter Hatcher, MDPortland, OR 972331356492979
- Margaret Hayes, MDPortland, OR 972331437164951
- John Loomis, MDPortland, OR 972331487618781
- Rowena Manalo, M.D.Portland, OR 972331689776163
Common questions
What is Lorissa Esther Klaus, M.D.'s NPI number?
Lorissa Esther Klaus, M.D.'s National Provider Identifier (NPI) is 1831296979, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lorissa Esther Klaus, M.D. located?
The NPPES record lists a practice address at 19500 SE Stark St, Portland, OR, 97233. Phone: (503) 669-3962. Providers update this record themselves, so call before visiting.
How can I verify Lorissa Esther Klaus, M.D.'s license?
NPPES lists Oregon license number MD24689, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lorissa Esther Klaus, M.D. prescribe under Medicare Part D?
In 2024, Lorissa Esther Klaus, M.D. had 3,825 Medicare Part D claims for 426 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.