Katherine Lem, P.A.
NPI 1043441264 · Physician Assistant · Ames, IA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Lem, P.A. is a Physician Assistant provider in Ames, IA (NPI 1043441264).
Provider details
- NPI number
- 1043441264
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Medical Physician Assistant363AM0700X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,841 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 848 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 549 | $71 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 359 | $42 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 314 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 304 | $101 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 98 | 52 |
| Triamcinolone Acetonide | 85 | 52 |
| Clobetasol Propionate | 65 | 25 |
| Betamethasone Dipropionate | 34 | 12 |
| Doxycycline Hyclate | 28 | 12 |
| Metronidazole | 23 | — |
| Fluocinonide | 23 | — |
| Spironolactone | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$64,710 across 93 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-08-05
- Last updated
- 2025-09-11
- Certified
- 2025-09-11
Frequently asked questions
- What is Katherine Lem's NPI number?
- Katherine Lem's National Provider Identifier (NPI) is 1043441264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Lem's specialty?
- Katherine Lem is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Lem located?
- Katherine Lem's practice location on file with NPPES is 3600 Lincoln Way, Ames, IA 50014-7595.
- What is Katherine Lem's phone number?
- The practice phone number listed in the NPPES registry for Katherine Lem is (515) 239-4492.
- Does Katherine Lem accept Medicare?
- Katherine Lem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Lem's NPI active?
- Yes — Katherine Lem's NPI (1043441264) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.