Doctor profile · Federal record

Dr. Ryan Mackenzie, NP

Acute Care Nurse Practitioner (CMS: Nurse Practitioner) · Nurse Practitioner · Ann Arbor, MI

  • NPI 1891570453
  • Accepts Medicare
  • 3 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1500 E Medical Center Dr
Ann Arbor, MI 481095000
(734) 647-5299
Additional location
3647 Forest Spring Dr
Lake Orion, MI 483591590
(248) 860-3190
Mailing address
3621 S State St
Ann Arbor, MI 481081633

Credentials & registration

NPPES · NUCC
NPI registered
August 2023 — 3 yrs on file
Profile last updated
April 15, 2025
Year of graduation
2023 — 3 yrs since
Specialty taxonomy
363LA2100X — NUCC code
State license (1)
Michigan #4704268806

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1891570453. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$39
Transactions
2
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Kiniksa Pharmaceuticals International, Plc 2 $38.50

By nature of payment

Food and Beverage
$39

Frequently asked questions

Auto-generated from federal data
What is Dr. Ryan Mackenzie's medical specialty?
Dr. Ryan Mackenzie practices Acute Care Nurse Practitioner in Ann Arbor, MI.
Where does Dr. Ryan Mackenzie practice?
Dr. Ryan Mackenzie practices at 1500 E Medical Center Dr, Ann Arbor, MI 481095000. Office phone: 7346475299.
What is Dr. Ryan Mackenzie's NPI?
Dr. Ryan Mackenzie's National Provider Identifier (NPI) is 1891570453, issued by NPPES.
Does Dr. Ryan Mackenzie accept Medicare assignment?
Yes. Dr. Ryan Mackenzie accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.