Doctor profile · Federal record
Dr. Mark Johnson, M.D.
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Mobile, AL
- NPI 1740222587
- Accepts Medicare
- MIPS 79.3 / 100 · 2023
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3719 Dauphin St
Mobile, AL 366081753
(251) 340-7786
fax (251) 461-2030 - Additional location
-
140 Burke Calhoun City RD
Calhoun City, MS 389169690
(662) 628-6622
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- November 15, 2023
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- Alabama #21483
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1740222587. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,757
Distinct HCPCS
10
Medicare allowed
$78,292
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
71045 |
X-ray of chest, 1 view | 809 | 587 | $8 | |
70450 |
Ct scan head or brain without contrast | 243 | 225 | $38 | |
77067 |
Screening mammography | 170 | 170 | $34 | |
77063 |
Screening 3d breast mammography | 168 | 168 | $27 | |
74176 |
Ct scan of abdomen and pelvis without contrast | 109 | 103 | $79 | |
71046 |
X-ray of chest, 2 views | 94 | 86 | $10 | |
71260 |
Ct scan of chest with contrast | 92 | 89 | $52 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 92 | 86 | $82 | |
74018 |
X-ray of abdomen, 1 view | 87 | 76 | $8 | |
71250 |
Ct scan of chest without contrast | 73 | 70 | $48 |
In context: peer comparison
Among 20 peers in Mobile Diagnostic Radiology Physician, average services per provider: 56. This provider delivers 49× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Mark Johnson's medical specialty?
Dr. Mark Johnson practices Diagnostic Radiology Physician in Mobile, AL.
Where does Dr. Mark Johnson practice?
Dr. Mark Johnson practices at 3719 Dauphin St, Mobile, AL 366081753. Office phone: 2513407786.
What is Dr. Mark Johnson's NPI?
Dr. Mark Johnson's National Provider Identifier (NPI) is 1740222587, issued by NPPES.
Does Dr. Mark Johnson accept Medicare assignment?
Yes. Dr. Mark Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Johnson commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan head or brain without contrast (HCPCS 70450); Screening mammography (HCPCS 77067). Source: CMS Medicare Physician & Other Practitioners file.