Doctor profile · Federal record

Dr. Justus Guerrieri, M.D.

Emergency Medicine Physician (CMS: Emergency Medicine) · Northampton, MA

  • NPI 1386900975
  • Accepts Medicare
  • 14 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
30 Locust St
Northampton, MA 010602052
(413) 582-2363
fax (413) 582-2914

Credentials & registration

NPPES · NUCC
NPI registered
April 2012 — 14 yrs on file
Profile last updated
June 16, 2021
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Massachusetts #263111

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1386900975. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
223
Distinct HCPCS
5
Medicare allowed
$34,192
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 74 72 $125
99291 Critical care, first 30-74 minutes 57 57 $221
99285 Emergency department visit with high level of medical decision making 45 45 $182
99283 Emergency department visit with low level of medical decision making 27 27 $74
99292 Critical care, each additional 30 minutes 20 18 $111

In context: peer comparison

Among 10 peers in Northampton Emergency Medicine Physician, average services per provider: 90. This provider delivers 2.5× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$20
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Csl Behring 1 $20.00

By nature of payment

Education
$20

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
142
Patients
139
Total drug cost
$816
Drug Type Claims Patients Total cost
Cyclobenzaprine Hcl Generic 33 32 $128
Gabapentin Generic 33 32 $171
Naproxen Generic 24 24 $157
Hydromorphone Hcl Generic 15 14 $30
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 14 14 $158
Ondansetron Hcl Generic 12 12 $138
Prednisone Generic 11 11 $34

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Justus Guerrieri's medical specialty?
Dr. Justus Guerrieri practices Emergency Medicine Physician in Northampton, MA.
Where does Dr. Justus Guerrieri practice?
Dr. Justus Guerrieri practices at 30 Locust St, Northampton, MA 010602052. Office phone: 4135822363.
What is Dr. Justus Guerrieri's NPI?
Dr. Justus Guerrieri's National Provider Identifier (NPI) is 1386900975, issued by NPPES.
Does Dr. Justus Guerrieri accept Medicare assignment?
Yes. Dr. Justus Guerrieri accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Justus Guerrieri commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Critical care (HCPCS 99291); Emergency department visit with high level of medical decision making (HCPCS 99285). Source: CMS Medicare Physician & Other Practitioners file.