Katherine Ann Lem, P.A.
Physician Assistant · Ames, IA
Katherine Ann Lem, P.A. is a physician assistant with a practice address in Ames, Iowa, and NPI 1043441264, issued on Aug 5, 2009. Check the license with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Ann Lem
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 3600 Lincoln Way, Ames, IA 50014
- Phone
- (515) 239-4492
- Enumerated
- Aug 5, 2009
- Record last updated
- Sep 11, 2025
- Fax
- (515) 663-4836
- Medicare enrollment
- Enrolled (PECOS I20090828000340); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,525 in Iowa → Look up another NPI →
Also registered at 3600 Lincoln Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Aagesen, RPHPharmacist1851510887
- Brenda Anderson, L.I.S.W.Clinical Social Worker1427037639
- Meagen Anderson, PA-CPhysician Assistant1881063006
- Clifford Barta, M.S.Clinical Psychologist1699811893
- Paul Brott, MSPTPhysical Therapist1164647137
- Evan Buikema, PSY.D.Clinical Psychologist1164872172
Verify Katherine Ann Lem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average physician assistant in 2024
639 Medicare Part D claims for 190 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Ketoconazole98 claims
- Triamcinolone Acetonide85 claims
- Clobetasol Propionate65 claims
- Betamethasone Dipropionate34 claims
- Doxycycline Hyclate28 claims
- Fluocinonide23 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.
Industry payments in 2024: $64,709.59
93 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mcfarland Clinic PCAmes, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Ann Lem among 1,525 physician assistant records in Iowa
Katherine Ann Lem, P.A. is one of 1,525 physician assistant records with a practice address in Iowa. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 34% of them.
- NPI issued2009 · 34% of these records are older, 64% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2009 · median 2017 among the 1,053 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 physician assistant records list a practice address in Ames
They are 30 of the 1,249 NPPES records with a practice address in Ames, and 1,525 physician assistant records in Iowa.
All 1,525 in Iowa → Every provider in Ames → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Meagen Anderson, PA-CAmes, IA 500141881063006
- Andrew HarrisAmes, IA 500141922732908
- Amy Hawthorne, PA-CAmes, IA 500141811986052
- Kristina Johnson, PA-CAmes, IA 500141760553150
- Katherine Lutyens, PA-CAmes, IA 500141649469826
- John McClelland, PA-CAmes, IA 500141649267907
- Bergen Schattschneider, PAAmes, IA 500141568086205
- Katherine Tjaden, PA-CAmes, IA 500141013974575
Common questions
What is Katherine Ann Lem, P.A.'s NPI number?
Katherine Ann Lem, P.A.'s National Provider Identifier (NPI) is 1043441264, issued on Aug 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Ann Lem, P.A. located?
The NPPES record lists a practice address at 3600 Lincoln Way, Ames, IA, 50014. Phone: (515) 239-4492. Providers update this record themselves, so call before visiting.
How can I verify Katherine Ann Lem, P.A.'s license?
Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Ann Lem, P.A. prescribe under Medicare Part D?
In 2024, Katherine Ann Lem, P.A. had 639 Medicare Part D claims for 190 beneficiaries; the average among physician assistant prescribers was 830. 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.