Doctor profile · Federal record
Dr. Benjamin Ko, M.D.
Nephrology Physician (CMS: Nephrology) · Chicago, IL
- NPI 1619096583
- Accepts Medicare
- MIPS 87.7 / 100 · 2023
- 25 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
5841 S Maryland Ave, Suite S506, Mc 5100
Chicago, IL 606371447
(773) 834-9140
fax (773) 705-5818
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619096583. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
337
Distinct HCPCS
5
Medicare allowed
$40,938
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 161 | 123 | $104 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 61 | 46 | $152 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 61 | 35 | $127 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 28 | 15 | $85 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 26 | 25 | $185 |
In context: peer comparison
Among 62 peers in Chicago Nephrology Physician, average services per provider: 104. This provider delivers 3.2× the peer median.Open Payments
Industry payments received
All-time total
$14
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Otsuka America Pharmaceutical, INC. | 1 | $13.77 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
105
Patients
0
Total drug cost
$3,681
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 23 | 0 | $490 |
| Cinacalcet Hcl | Generic | 22 | 0 | $2,571 |
| Chlorthalidone | Generic | 17 | 0 | $267 |
| Prednisone | Generic | 15 | 0 | $121 |
| Furosemide | Generic | 14 | 0 | $116 |
| Lisinopril | Generic | 14 | 0 | $117 |
Frequently asked questions
What is Dr. Benjamin Ko's medical specialty?
Dr. Benjamin Ko practices Nephrology Physician in Chicago, IL.
Where does Dr. Benjamin Ko practice?
Dr. Benjamin Ko practices at 5841 S Maryland Ave, Chicago, IL 606371447. Office phone: 7738349140.
What is Dr. Benjamin Ko's NPI?
Dr. Benjamin Ko's National Provider Identifier (NPI) is 1619096583, issued by NPPES.
Does Dr. Benjamin Ko accept Medicare assignment?
Yes. Dr. Benjamin Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Benjamin Ko commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.