Marissa Niemi, PA-C
NPI 1235417734 · Medical Physician Assistant · Erie, PA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Niemi, PA-C is a Medical Physician Assistant provider in Erie, PA (NPI 1235417734).
Provider details
- NPI number
- 1235417734
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- OA002671 (PA)
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 tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 677 | 183 |
| Sacubitril/Valsartanbrand: Entresto | 641 | 138 |
| Spironolactone | 579 | 163 |
| Empagliflozinbrand: Jardiance | 494 | 131 |
| Furosemide | 407 | 135 |
| Bumetanide | 379 | 112 |
| Losartan Potassium | 352 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$147 across 4 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
- 2011-08-01
- Last updated
- 2018-01-24
Frequently asked questions
- What is Marissa Niemi's NPI number?
- Marissa Niemi's National Provider Identifier (NPI) is 1235417734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Niemi's specialty?
- Marissa Niemi is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Niemi located?
- Marissa Niemi's practice location on file with NPPES is 120 E 2nd St, Erie, PA 16507-1537.
- What is Marissa Niemi's phone number?
- The practice phone number listed in the NPPES registry for Marissa Niemi is (814) 456-8980.
- Does Marissa Niemi accept Medicare?
- Marissa Niemi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Niemi's NPI active?
- Yes — Marissa Niemi's NPI (1235417734) is active in the NPPES registry as of the last update on 2018-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.