Doctor profile · Federal record

Dr. Brian Gallman, D.O.

Internal Medicine Physician (CMS: Internal Medicine) · Gilbert, AZ

  • NPI 1639106438
  • Accepts Medicare
  • 26 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
875 N Greenfield RD, Suite 104
Gilbert, AZ 852345044
(480) 633-0551
fax (480) 633-0807
Mailing address
Po Box 3229
Gilbert, AZ 852993229

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
2000 — 26 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Arizona #4061
Medicaid
AZ #885402

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1639106438. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
168
Distinct HCPCS
2
Medicare allowed
$22,575
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 110 95 $117
99285 Emergency department visit with high level of medical decision making 58 57 $166

In context: peer comparison

Among 14 peers in Gilbert Internal Medicine Physician, average services per provider: 133. This provider delivers 1.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
117
Patients
114
Total drug cost
$648
Drug Type Claims Patients Total cost
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 33 32 $138
Ondansetron Odt (Ondansetron) Brand 29 29 $273
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 15 15 $67
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 15 15 $61
Prednisone Generic 13 12 $29
Cephalexin Generic 12 11 $80

Frequently asked questions

Auto-generated from federal data
What is Dr. Brian Gallman's medical specialty?
Dr. Brian Gallman practices Internal Medicine Physician in Gilbert, AZ.
Where does Dr. Brian Gallman practice?
Dr. Brian Gallman practices at 875 N Greenfield RD, Gilbert, AZ 852345044. Office phone: 4806330551.
What is Dr. Brian Gallman's NPI?
Dr. Brian Gallman's National Provider Identifier (NPI) is 1639106438, issued by NPPES.
Does Dr. Brian Gallman accept Medicare assignment?
Yes. Dr. Brian Gallman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brian Gallman commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285). Source: CMS Medicare Physician & Other Practitioners file.