Marissa L. Niemi, PA-C
Medical Physician Assistant · Erie, PA
Marissa L. Niemi, PA-C is a medical physician assistant with a practice address in Erie, Pennsylvania, and NPI 1235417734, issued on Aug 1, 2011. Check the license (Pennsylvania MA054952, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa L. Niemi
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- MA054952 PA
OA002671 PA
Self-reported in NPPES; status is on the state search - Practice location
- 120 E 2ND St, Erie, PA 16507
- Phone
- (814) 456-8980
- Enumerated
- Aug 1, 2011
- Record last updated
- Jan 24, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (814) 451-0443
- Medicare enrollment
- Enrolled (PECOS I20110927000628); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,897 in Pennsylvania → Look up another NPI →
Also registered at 120 E 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marissa L. Niemi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license MA054952Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.4 times the Medicare Part D claims of the average medical physician assistant in 2024
6,158 Medicare Part D claims for 532 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Metoprolol Succinate677 claims
- Entresto641 claims
- Spironolactone579 claims
- Jardiance494 claims
- Furosemide407 claims
- Bumetanide379 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $146.86
4 payments; by number, the most common kind was food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regional Health Services IncErie, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa L. Niemi among 3,897 medical physician assistant records in Pennsylvania
Marissa L. Niemi, PA-C is one of 3,897 medical physician assistant records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 38% of them.
- NPI issued2011 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2015 among the 2,467 with a school on file
- Record last updated2018 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 medical physician assistant records list a practice address in Erie
They are 86 of the 5,083 NPPES records with a practice address in Erie, and 3,897 medical physician assistant records in Pennsylvania.
All 3,897 in Pennsylvania → Every provider in Erie → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Birgitta AllgeierErie, PA 165071053369579
- Corinne Diplacido, PA-CErie, PA 165071538539978
- Alyssa DrushelErie, PA 165071841670155
- Ryan FrancisErie, PA 165071346762085
- Gina Fulgenzio, PA-CErie, PA 165071639549710
- Stephanie Janson Staib, PA-CErie, PA 165071396906343
- Samantha JenkinsErie, PA 165071992255046
- Ashley Kuneman, PA-CErie, PA 165071104135037
Common questions
What is Marissa L. Niemi, PA-C's NPI number?
Marissa L. Niemi, PA-C's National Provider Identifier (NPI) is 1235417734, issued on Aug 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Marissa L. Niemi, PA-C located?
The NPPES record lists a practice address at 120 E 2ND St, Erie, PA, 16507. Phone: (814) 456-8980. Providers update this record themselves, so call before visiting.
How can I verify Marissa L. Niemi, PA-C's license?
NPPES lists Pennsylvania license number MA054952, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa L. Niemi, PA-C prescribe under Medicare Part D?
In 2024, Marissa L. Niemi, PA-C had 6,158 Medicare Part D claims for 532 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Marissa L. Niemi, PA-C's MIPS final score?
The 2023 MIPS final score is 79.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.