Doctor profile · Federal record

Dr. Gregory Johnson

Physician Assistant · Oshkosh, WI

  • NPI 1568080505
  • Accepts Medicare
  • 4 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
700 N Westhaven Dr
Oshkosh, WI 549046947
(920) 456-4030
Mailing address
Po Box 735044
Chicago, IL 606735044

Credentials & registration

NPPES · NUCC
NPI registered
July 2020 — 6 yrs on file
Profile last updated
April 3, 2024
Year of graduation
2022 — 4 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Wisconsin #7020
Medicaid
WI #100213489

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1568080505. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
94
Distinct HCPCS
2
Medicare allowed
$12,072
HCPCS Description Services Patients Avg allowed
99215 Established patient office or other outpatient visit, 40-54 minutes 72 48 $136
99214 Established patient office or other outpatient visit, 30-39 minutes 22 16 $102

In context: peer comparison

Among 12 peers in this city , average services per provider: 173. This provider delivers 0.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,386
Patients
412
Total drug cost
$36,683
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 212 59 $3,998
Gabapentin Generic 205 49 $4,104
Tizanidine Hcl Generic 160 48 $2,093
Pregabalin Generic 152 45 $7,157
Duloxetine Hcl Generic 121 37 $2,051
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 114 20 $3,318
Tramadol Hcl Generic 86 21 $559
Cyclobenzaprine Hcl Generic 67 17 $796
Diclofenac Sodium Generic 52 36 $3,110
Meloxicam Generic 48 11 $259

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Gregory Johnson's medical specialty?
Dr. Gregory Johnson practices Physician Assistant in Oshkosh, WI.
Where does Dr. Gregory Johnson practice?
Dr. Gregory Johnson practices at 700 N Westhaven Dr, Oshkosh, WI 549046947. Office phone: 9204564030.
What is Dr. Gregory Johnson's NPI?
Dr. Gregory Johnson's National Provider Identifier (NPI) is 1568080505, issued by NPPES.
Does Dr. Gregory Johnson accept Medicare assignment?
Yes. Dr. Gregory Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Johnson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.