Doctor profile · Federal record
Dr. Steven Ko, MD
Internal Medicine Physician (CMS: Pulmonary Disease) · Fontana, CA
- NPI 1194135780
- Accepts Medicare
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9961 Sierra Ave
Fontana, CA 923356720
(909) 427-2608
fax (909) 427-5312 - Mailing address
-
17234 Valley Blvd
Fontana, CA 92335
Credentials & registration
- NPI registered
- May 2014 — 12 yrs on file
- Profile last updated
- March 24, 2016
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #141088
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1194135780. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
81
Distinct HCPCS
1
Medicare allowed
$17,971
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 81 | 53 | $222 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 61. This provider delivers 1.3× the peer median.Open Payments
Industry payments received
All-time total
$16
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, Inc. | 1 | $15.68 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Steven Ko's medical specialty?
Dr. Steven Ko practices Internal Medicine Physician in Fontana, CA.
Where does Dr. Steven Ko practice?
Dr. Steven Ko practices at 9961 Sierra Ave, Fontana, CA 923356720. Office phone: 9094272608.
What is Dr. Steven Ko's NPI?
Dr. Steven Ko's National Provider Identifier (NPI) is 1194135780, issued by NPPES.
Does Dr. Steven Ko accept Medicare assignment?
Yes. Dr. Steven Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Steven Ko commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.