Amanda Lynn Nienhaus, PA
Physician Assistant · Grand Rapids, MI
Amanda Lynn Nienhaus, PA is a physician assistant with a practice address in Grand Rapids, Michigan, and NPI 1699217273, issued on Nov 14, 2016. Check the license (Michigan 5601008068, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amanda Lynn Nienhaus
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 5601008068 MI
Self-reported in NPPES; status is on the state search - Practice location
- 100 Michigan St NE, Grand Rapids, MI 49503
- Phone
- (616) 391-3139
- Enumerated
- Nov 14, 2016
- Record last updated
- Aug 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20170223000060); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 6,989 in Michigan → Look up another NPI →
Also registered at 100 Michigan St NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amanda Lynn Nienhaus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 5601008068Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average physician assistant in 2024
129 Medicare Part D claims for 75 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 13 claims were for opioids.
Most prescribed
- Prednisone12 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Spectrum Health Primary Care PartnersGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amanda Lynn Nienhaus among 6,989 physician assistant records in Michigan
Amanda Lynn Nienhaus, PA is one of 6,989 physician assistant records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 48% of them.
- NPI issued2016 · 48% of these records are older, 48% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2017 among the 4,739 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
913 physician assistant records list a practice address in Grand Rapids
They are 913 of the 18,005 NPPES records with a practice address in Grand Rapids, and 6,989 physician assistant records in Michigan.
All 6,989 in Michigan → Every provider in Grand Rapids → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lisa Berger, P.A.Grand Rapids, MI 495031497729172
- Barbara Blakely, PA-CGrand Rapids, MI 495031649255563
- Sarah Bleyenberg, PA-CGrand Rapids, MI 495031174504088
- Laura Bolenz-Geesin, PA-CGrand Rapids, MI 495031811982283
- Joel Heagle, PA-CGrand Rapids, MI 495031962497990
- John Hendricks, PA-CGrand Rapids, MI 495031992705610
- Carrie Jerow, MPAS, PA-CGrand Rapids, MI 495031033190285
- Jacqueline Johanson, P.A.-CGrand Rapids, MI 495031952304982
Common questions
What is Amanda Lynn Nienhaus, PA's NPI number?
Amanda Lynn Nienhaus, PA's National Provider Identifier (NPI) is 1699217273, issued on Nov 14, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Amanda Lynn Nienhaus, PA located?
The NPPES record lists a practice address at 100 Michigan St NE, Grand Rapids, MI, 49503. Phone: (616) 391-3139. Providers update this record themselves, so call before visiting.
How can I verify Amanda Lynn Nienhaus, PA's license?
NPPES lists Michigan license number 5601008068, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Amanda Lynn Nienhaus, PA prescribe under Medicare Part D?
In 2024, Amanda Lynn Nienhaus, PA had 129 Medicare Part D claims for 75 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Amanda Lynn Nienhaus, PA's MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.