Doctor profile · Federal record
Dr. Charles Lo, MD
Surgery Physician (CMS: General Surgery) · San Francisco, CA
- NPI 1811978604
- Accepts Medicare
- 59 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
818 Jackson Street, Suite 102
San Francisco, CA 941334849
(415) 391-9993
fax (415) 291-9993 - Mailing address
-
818 Jackson St Ste 102
San Francisco, CA 941334849
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- October 29, 2024
- Year of graduation
- 1967 — 59 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- California #00A519440
- Medicaid
- CA #00A519440
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1811978604. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
228
Distinct HCPCS
5
Medicare allowed
$34,912
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 107 | 68 | $107 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 71 | 71 | $132 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 26 | 26 | $194 | |
49505 |
Repair of groin hernia (5 years or older) | 12 | 12 | $606 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 12 | 12 | $144 |
In context: peer comparison
Among 33 peers in San Francisco Surgery Physician, average services per provider: 39. This provider delivers 5.8× the peer median.Open Payments
Industry payments received
All-time total
$302
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Stryker Corporation | 1 | $173.45 | |
| Janssen Pharmaceuticals, INC | 1 | $128.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
169
Patients
155
Total drug cost
$1,657
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 59 | 55 | $385 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 32 | 26 | $350 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 24 | 24 | $413 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 16 | 15 | $325 |
| Ciprofloxacin Hcl | Generic | 15 | 12 | $105 |
| Metronidazole | Generic | 12 | 12 | $16 |
| Neomycin Sulfate | Generic | 11 | 11 | $63 |
Hospital affiliations
Frequently asked questions
What is Dr. Charles Lo's medical specialty?
Dr. Charles Lo practices Surgery Physician in San Francisco, CA.
Where does Dr. Charles Lo practice?
Dr. Charles Lo practices at 818 Jackson Street, San Francisco, CA 941334849. Office phone: 4153919993.
What is Dr. Charles Lo's NPI?
Dr. Charles Lo's National Provider Identifier (NPI) is 1811978604, issued by NPPES.
Does Dr. Charles Lo accept Medicare assignment?
Yes. Dr. Charles Lo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Lo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.