Marie Nizienski, PA-C
NPI 1144517939 · Physician Assistant · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marie Nizienski, PA-C is a Physician Assistant provider in Grand Rapids, MI (NPI 1144517939).
Provider details
- NPI number
- 1144517939
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 5601006046 (MI)
Specialties & taxonomies
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
14 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
53 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 18 | $106 |
| Manual Urinalysis Test With Examination Using Microscope, Non-Automated81000 | 12 | $4 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $104 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 11 | $10 |
Typical Medicare-allowed amounts for these services range $4–$106 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 372 | 150 |
| Finasteride | 190 | 76 |
| Cephalexin | 170 | 114 |
| Mirabegronbrand: Myrbetriq | 139 | 52 |
| Solifenacin Succinate | 132 | 53 |
| Tolterodine Tartratebrand: Tolterodine Tartrate Er | 90 | 32 |
| Nitrofurantoin Macrocrystalbrand: Nitrofurantoin | 75 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,411 across 66 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
- 2011-06-30
- Last updated
- 2022-03-21
- Certified
- 2022-03-21
Frequently asked questions
- What is Marie Nizienski's NPI number?
- Marie Nizienski's National Provider Identifier (NPI) is 1144517939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marie Nizienski's specialty?
- Marie Nizienski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marie Nizienski located?
- Marie Nizienski's practice location on file with NPPES is 245 Cherry St Se, Grand Rapids, MI 49503-4607.
- What is Marie Nizienski's phone number?
- The practice phone number listed in the NPPES registry for Marie Nizienski is (616) 459-3551.
- Does Marie Nizienski accept Medicare?
- Marie Nizienski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marie Nizienski's NPI active?
- Yes — Marie Nizienski's NPI (1144517939) is active in the NPPES registry as of the last update on 2022-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.