Doctor profile · Federal record

Dr. Amanda Nienhaus, PA

Physician Assistant · Student in an Organized Health Care Education/Training Program · Grand Rapids, MI

  • NPI 1699217273
  • Accepts Medicare
  • MIPS 93.8 / 100 · 2023
  • 10 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
100 Michigan St Ne
Grand Rapids, MI 495032560
(616) 391-3139
Mailing address
100 Michigan St Ne # Mc845
Grand Rapids, MI 495032560

Credentials & registration

NPPES · NUCC
NPI registered
November 2016 — 10 yrs on file
Profile last updated
August 11, 2022
Year of graduation
2016 — 10 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Michigan #5601008068

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1699217273. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
175
Distinct HCPCS
4
Medicare allowed
$16,265
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 64 35 $100
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 52 33 $64
99239 Hospital discharge day management, more than 30 minutes 40 40 $95
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 19 $145

In context: peer comparison

Among 234 peers in Grand Rapids Physician Assistant, average services per provider: 56. This provider delivers 3.1× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Amanda Nienhaus's medical specialty?
Dr. Amanda Nienhaus practices Physician Assistant in Grand Rapids, MI.
Where does Dr. Amanda Nienhaus practice?
Dr. Amanda Nienhaus practices at 100 Michigan St Ne, Grand Rapids, MI 495032560. Office phone: 6163913139.
What is Dr. Amanda Nienhaus's NPI?
Dr. Amanda Nienhaus's National Provider Identifier (NPI) is 1699217273, issued by NPPES.
Does Dr. Amanda Nienhaus accept Medicare assignment?
Yes. Dr. Amanda Nienhaus accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Amanda Nienhaus commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.