Doctor profile · Federal record
Dr. Mark Johnson, MD
Surgery Physician (CMS: General Surgery) · Washington, DC
- NPI 1831118868
- Accepts Medicare
- 33 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1140 Varnum Street Ne, Suite 106
Washington, DC 20017
(202) 448-4014
fax (202) 448-4082 - Mailing address
-
1160 Varnum St Ne, Suite 300
Washington, DC 200172107
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- July 19, 2013
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- District of Columbia #MD30469
- Medicaid (2)
- MD #529000700 · DC #017148800
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831118868. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
53
Distinct HCPCS
3
Medicare allowed
$6,960
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 22 | 22 | $123 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 18 | 16 | $102 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 13 | 13 | $187 |
In context: peer comparison
Among 32 peers in this city , average services per provider: 50. This provider delivers 1.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
12
Patients
11
Total drug cost
$35
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tramadol Hcl | Generic | 12 | 11 | $35 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Johnson's medical specialty?
Dr. Mark Johnson practices Surgery Physician in Washington, DC.
Where does Dr. Mark Johnson practice?
Dr. Mark Johnson practices at 1140 Varnum Street Ne, Washington, DC 20017. Office phone: 2024484014.
What is Dr. Mark Johnson's NPI?
Dr. Mark Johnson's National Provider Identifier (NPI) is 1831118868, 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: New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.