Karen Lentfer, M.D.
NPI 1245289008 · Family Medicine Physician · Madison, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Lentfer, M.D. is a Family Medicine Physician provider in Madison, WI (NPI 1245289008).
Provider details
- NPI number
- 1245289008
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 37377 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,233 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 235 | $121 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 217 | $9 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 96 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $85 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 70 | $13 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 59 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 312 | 87 |
| Levothyroxine Sodium | 271 | 63 |
| Omeprazole | 181 | 48 |
| Fluoxetine Hcl | 148 | 36 |
| Hydrochlorothiazide | 135 | 38 |
| Amlodipine Besylate | 122 | 36 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (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
- 2006-05-09
- Last updated
- 2020-11-02
- Certified
- 2020-11-02
Frequently asked questions
- What is Karen Lentfer's NPI number?
- Karen Lentfer's National Provider Identifier (NPI) is 1245289008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Lentfer's specialty?
- Karen Lentfer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Lentfer located?
- Karen Lentfer's practice location on file with NPPES is 4901 Cottage Grove Rd, Madison, WI 53716-1392.
- What is Karen Lentfer's phone number?
- The practice phone number listed in the NPPES registry for Karen Lentfer is (608) 221-1501.
- Does Karen Lentfer accept Medicare?
- Karen Lentfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Lentfer's NPI active?
- Yes — Karen Lentfer's NPI (1245289008) is active in the NPPES registry as of the last update on 2020-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.