Doctor profile · Federal record

Dr. Christopher Ryan, PA-C

Surgical Physician Assistant (CMS: Physician Assistant) · Physician Assistant · Portland, ME

  • NPI 1639112758
  • Accepts Medicare
  • MIPS 85.7 / 100 · 2023
  • 22 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
818 Congress St
Portland, ME 041023112
(207) 773-8161
fax (207) 773-1489
Mailing address
301C US Route One
Scarborough, ME 040749701

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
August 2, 2012
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
363AS0400X — NUCC code
State licenses (2)
Maine #PA001074 · Massachusetts #1882

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1639112758. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$23
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Zoll Services LLC (A/K/A Zoll LifeCor Corp) 1 $22.53

By nature of payment

Food and Beverage
$23

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
87
Patients
28
Total drug cost
$1,097
Drug Type Claims Patients Total cost
Metoprolol Tartrate Generic 31 15 $348
Amlodipine Besylate Generic 24 0 $185
Clopidogrel (Clopidogrel Bisulfate) Brand 16 0 $504
Furosemide Generic 16 13 $60

Frequently asked questions

Auto-generated from federal data
What is Dr. Christopher Ryan's medical specialty?
Dr. Christopher Ryan practices Surgical Physician Assistant in Portland, ME.
Where does Dr. Christopher Ryan practice?
Dr. Christopher Ryan practices at 818 Congress St, Portland, ME 041023112. Office phone: 2077738161.
What is Dr. Christopher Ryan's NPI?
Dr. Christopher Ryan's National Provider Identifier (NPI) is 1639112758, issued by NPPES.
Does Dr. Christopher Ryan accept Medicare assignment?
Yes. Dr. Christopher Ryan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.