Doctor profile · Federal record

Dr. John Nadeau, D.O.

Surgery Physician (CMS: General Surgery) · Surgery Physician · Biddeford, ME

  • NPI 1366623548
  • Accepts Medicare
  • 22 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
9 Healthcare Dr Ste 204
Biddeford, ME 040059450
(207) 284-2630
Additional location
727 E Court St
Paris, IL 619442460
(217) 465-8411
fax (217) 463-3184
Additional location
1 Medical Center Dr
Biddeford, ME 040059422
Mailing address
1 Medical Center Dr
Biddeford, ME 040059422

Credentials & registration

NPPES · NUCC
NPI registered
November 2007 — 19 yrs on file
Profile last updated
March 11, 2019
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
208600000X — NUCC code
State licenses (2)
Maine #DO2732 · Illinois #036131230
Medicaid
IL #036131230

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366623548. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
330
Distinct HCPCS
8
Medicare allowed
$28,571
HCPCS Description Services Patients Avg allowed
99212 Established patient office or other outpatient visit, 10-19 minutes 105 78 $52
99203 New patient office or other outpatient visit, 30-44 minutes 53 53 $104
99202 New patient office or other outpatient visit, 15-29 minutes 39 39 $67
99213 Established patient office or other outpatient visit, 20-29 minutes 39 37 $84
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 26 25 $96
45378 Diagnostic exam of large bowel using a flexible endoscope 25 25 $155
45380 Biopsy of large bowel using a flexible endoscope 23 23 $122
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 20 20 $123

In context: peer comparison

Among 5 peers in Biddeford Surgery Physician, average services per provider: 47. This provider delivers 7.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. John Nadeau's medical specialty?
Dr. John Nadeau practices Surgery Physician in Biddeford, ME.
Where does Dr. John Nadeau practice?
Dr. John Nadeau practices at 9 Healthcare Dr Ste 204, Biddeford, ME 040059450. Office phone: 2072842630.
What is Dr. John Nadeau's NPI?
Dr. John Nadeau's National Provider Identifier (NPI) is 1366623548, issued by NPPES.
Does Dr. John Nadeau accept Medicare assignment?
Yes. Dr. John Nadeau accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Nadeau commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212); New patient office or other outpatient visit (HCPCS 99203); New patient office or other outpatient visit (HCPCS 99202). Source: CMS Medicare Physician & Other Practitioners file.