Doctor profile · Federal record

Dr. William Ennis, MD

Anesthesiology Physician (CMS: Anesthesiology) · Concord, NH

  • NPI 1356447254
  • Accepts Medicare
  • 38 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
250 Pleasant St
Concord, NH 033012598
(603) 789-9103
fax (603) 227-7832
Additional location
60 Commercial St Ste 201
Concord, NH 033015096
Additional location
80 Highland St
Laconia, NH 032463235

Credentials & registration

NPPES · NUCC
NPI registered
September 2006 — 20 yrs on file
Profile last updated
September 26, 2024
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
207L00000X — NUCC code
State license (1)
New Hampshire #9150
Medicaid
NH #30006777

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1356447254. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
28
Distinct HCPCS
2
Medicare allowed
$2,017
HCPCS Description Services Patients Avg allowed
00104 Anesthesia for electroshock therapy 17 12 $51
01922 Anesthesia for x-ray or radiation therapy 11 11 $105

In context: peer comparison

Among 20 peers in this city , average services per provider: 22. This provider delivers 1.3× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. William Ennis's medical specialty?
Dr. William Ennis practices Anesthesiology Physician in Concord, NH.
Where does Dr. William Ennis practice?
Dr. William Ennis practices at 250 Pleasant St, Concord, NH 033012598. Office phone: 6037899103.
What is Dr. William Ennis's NPI?
Dr. William Ennis's National Provider Identifier (NPI) is 1356447254, issued by NPPES.
Does Dr. William Ennis accept Medicare assignment?
Yes. Dr. William Ennis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Ennis commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for electroshock therapy (HCPCS 00104); Anesthesia for x-ray or radiation therapy (HCPCS 01922). Source: CMS Medicare Physician & Other Practitioners file.