Doctor profile · Federal record
Dr. Steven Ong, MD
Nephrology Physician (CMS: Nephrology) · Fairfield, CA
- NPI 1225006349
- Accepts Medicare
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1411 Oliver RD Ste 250
Fairfield, CA 945343425
(707) 426-5407
fax (707) 426-6376
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- November 12, 2024
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A90786
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225006349. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,554
Distinct HCPCS
10
Medicare allowed
$268,268
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 355 | 45 | $316 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 273 | 96 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 258 | 145 | $111 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 148 | 61 | $127 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 116 | 81 | $92 | |
90966 |
Home dialysis services per month (20 years or older) | 104 | 16 | $317 | |
90935 |
Hemodialysis procedure with physician evaluation | 74 | 37 | $76 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 53 | 42 | $138 | |
90962 |
Dialysis services, 1 physician visit per month (20 years or older) | 50 | 29 | $220 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 37 | 35 | $185 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 113. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$684
Transactions
18
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen Inc. | 6 | $372.72 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 9 | $245.35 | |
| Ardelyx, Inc. | 2 | $34.65 | |
| Novartis Pharmaceuticals Corporation | 1 | $30.85 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
698
Patients
157
Total drug cost
$46,981
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Allopurinol | Generic | 165 | 44 | $2,898 |
| Calcitriol | Generic | 80 | 20 | $2,780 |
| Amlodipine Besylate | Generic | 69 | 25 | $1,775 |
| Losartan Potassium | Generic | 66 | 19 | $1,081 |
| Sevelamer Carbonate | Generic | 61 | 16 | $26,163 |
| Lisinopril | Generic | 45 | 11 | $718 |
| Bumetanide | Generic | 31 | 11 | $2,177 |
| Furosemide | Generic | 30 | 0 | $290 |
| Calcium Acetate | Generic | 25 | 11 | $4,935 |
| Atorvastatin Calcium | Generic | 23 | 0 | $469 |
Hospital affiliations
Frequently asked questions
What is Dr. Steven Ong's medical specialty?
Dr. Steven Ong practices Nephrology Physician in Fairfield, CA.
Where does Dr. Steven Ong practice?
Dr. Steven Ong practices at 1411 Oliver RD Ste 250, Fairfield, CA 945343425. Office phone: 7074265407.
What is Dr. Steven Ong's NPI?
Dr. Steven Ong's National Provider Identifier (NPI) is 1225006349, issued by NPPES.
Does Dr. Steven Ong accept Medicare assignment?
Yes. Dr. Steven Ong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Steven Ong commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 2-3 physician visits per month (20 years or older) (HCPCS 90961); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.