Lynn Hahnfeld, MD
NPI 1861431769 · Urology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynn Hahnfeld, MD is a Urology Physician provider in Madison, WI (NPI 1861431769).
Provider details
- NPI number
- 1861431769
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 36940-020 (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
1,576 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 | 212 | $120 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 174 | $3 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 173 | $156 |
| Diagnostic Exam of Bladder and Urethra Using an Endoscope52000 | 157 | $223 |
| Automated Urinalysis Test81003 | 146 | $2 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 119 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 87 | 44 |
| Cefpodoxime Proxetil | 74 | 65 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 70 | 52 |
| Ciprofloxacin Hcl | 39 | 35 |
| Amoxicillin | 30 | 29 |
| Oxybutynin Chloride | 21 | 15 |
| Finasteride | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 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
- 2006-06-06
- Last updated
- 2020-11-18
- Certified
- 2020-11-18
Frequently asked questions
- What is Lynn Hahnfeld's NPI number?
- Lynn Hahnfeld's National Provider Identifier (NPI) is 1861431769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Hahnfeld's specialty?
- Lynn Hahnfeld is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Lynn Hahnfeld located?
- Lynn Hahnfeld's practice location on file with NPPES is 752 N High Point Rd, Madison, WI 53717-2236.
- What is Lynn Hahnfeld's phone number?
- The practice phone number listed in the NPPES registry for Lynn Hahnfeld is (608) 824-4000.
- Does Lynn Hahnfeld accept Medicare?
- Lynn Hahnfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynn Hahnfeld's NPI active?
- Yes — Lynn Hahnfeld's NPI (1861431769) is active in the NPPES registry as of the last update on 2020-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.