Michael Nielsen, MHS, PAC
NPI 1578794897 · Physician Assistant · Madison, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Nielsen, MHS, PAC is a Physician Assistant provider in Madison, WI (NPI 1578794897).
Provider details
- NPI number
- 1578794897
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MHS, PAC
- Sex
- Male
- Sole proprietor
- No
- License
- 2459-023 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
258 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 91 | $136 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 66 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 33 | $77 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 15 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 46 | 44 |
| Prednisone | 32 | 31 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 29 | 29 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 23 | 20 |
| Doxycycline Monohydrate | 20 | 20 |
| Ondansetronbrand: Ondansetron Odt | 14 | 14 |
| Azithromycin |
Practice location
Mailing address
Additional practice locations (1)
- 5330 W Villard AveMilwaukee, WI 53218-4345Phone: (414) 463-9159Fax: (414) 831-0422
Registry dates
- Enumerated
- 2009-08-04
- Last updated
- 2023-06-06
- Certified
- 2023-06-06
Frequently asked questions
- What is Michael Nielsen's NPI number?
- Michael Nielsen's National Provider Identifier (NPI) is 1578794897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Nielsen's specialty?
- Michael Nielsen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Nielsen located?
- Michael Nielsen's practice location on file with NPPES is 2402 Winnebago St, Madison, WI 53704-5341.
- What is Michael Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Michael Nielsen is (608) 287-2832.
- Does Michael Nielsen accept Medicare?
- Michael Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Nielsen's NPI active?
- Yes — Michael Nielsen's NPI (1578794897) is active in the NPPES registry as of the last update on 2023-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.