Doctor profile · Federal record
Dr. Mary Johnson, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · San Francisco, CA
- NPI 1902887227
- Accepts Medicare
- 27 yrs in practice
- Female
- No sanctions
Practice & contact
- Primary practice
-
2333 Buchanan St
San Francisco, CA 941151925
(209) 342-2300
fax (209) 524-4240 - Mailing address
-
Po Box 232410
San Diego, CA 921932410
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- October 3, 2016
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A75167
- Medicaid
- CA #00A751670
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902887227. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
995
Distinct HCPCS
10
Medicare allowed
$47,216
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 148 | 136 | $7 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 133 | 132 | $136 | |
J0696 |
Injection, ceftriaxone sodium, per 250 mg | 112 | 28 | $1 | |
J2405 |
Injection, ondansetron hydrochloride, per 1 mg | 112 | 27 | $0 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 61 | 61 | $177 | |
36415 |
Insertion of needle into vein for collection of blood sample | 57 | 57 | $8 | |
96374 |
Injection of drug or substance into vein | 55 | 55 | $42 | |
81003 |
Automated urinalysis test | 53 | 50 | $2 | |
96375 |
Injection of additional new drug or substance into vein | 42 | 34 | $17 | |
96361 |
Infusion into a vein for hydration, each additional hour | 39 | 24 | $14 |
In context: peer comparison
Among 87 peers in this city , average services per provider: 91. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$150
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Dexcom, Inc. | 1 | $150.19 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
78
Patients
76
Total drug cost
$624
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 24 | 24 | $276 |
| Azithromycin | Generic | 23 | 22 | $108 |
| Cefuroxime (Cefuroxime Axetil) | Brand | 18 | 17 | $201 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 13 | 13 | $39 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Johnson's medical specialty?
Dr. Mary Johnson practices Emergency Medicine Physician in San Francisco, CA.
Where does Dr. Mary Johnson practice?
Dr. Mary Johnson practices at 2333 Buchanan St, San Francisco, CA 941151925. Office phone: 2093422300.
What is Dr. Mary Johnson's NPI?
Dr. Mary Johnson's National Provider Identifier (NPI) is 1902887227, issued by NPPES.
Does Dr. Mary Johnson accept Medicare assignment?
Yes. Dr. Mary Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Johnson commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with tracing (HCPCS 93005); Established patient office or other outpatient visit (HCPCS 99214); Injection, ceftriaxone sodium, per 250 mg (HCPCS J0696). Source: CMS Medicare Physician & Other Practitioners file.