Marlise Davidson-Fiedler, MD
NPI 1528590908 · Family Medicine Physician · Janesville, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marlise Davidson-Fiedler, MD is a Family Medicine Physician provider in Janesville, WI (NPI 1528590908).
Provider details
- NPI number
- 1528590908
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- T9834 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
350 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 103 | $74 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 101 | $121 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 59 | $108 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 31 | $77 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 29 | $46 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 18 | 17 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 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
Additional practice locations (3)
- 849 Kellogg AveJanesville, WI 53546-2808Phone: (608) 755-7960Fax: (608) 755-7873
- 849 Kellogg AveJanesville, WI 53546-2808Phone: (608) 755-7960Fax: (608) 755-7873
- N2950 State Road 67Lake Geneva, WI 53147-2655Phone: (262) 245-4990Fax: (262) 245-2248
Registry dates
- Enumerated
- 2017-04-03
- Last updated
- 2023-09-25
- Certified
- 2023-09-25
Frequently asked questions
- What is Marlise Davidson-Fiedler's NPI number?
- Marlise Davidson-Fiedler's National Provider Identifier (NPI) is 1528590908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marlise Davidson-Fiedler's specialty?
- Marlise Davidson-Fiedler is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marlise Davidson-Fiedler located?
- Marlise Davidson-Fiedler's practice location on file with NPPES is 1000 Mineral Point Ave, Janesville, WI 53548.
- What is Marlise Davidson-Fiedler's phone number?
- The practice phone number listed in the NPPES registry for Marlise Davidson-Fiedler is (608) 756-6611.
- Does Marlise Davidson-Fiedler accept Medicare?
- Marlise Davidson-Fiedler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marlise Davidson-Fiedler's NPI active?
- Yes — Marlise Davidson-Fiedler's NPI (1528590908) is active in the NPPES registry as of the last update on 2023-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.