Doctor profile · Federal record
Dr. Kok-Tong Ling, M.D.
Nephrology Physician (CMS: Nephrology) · Internal Medicine Physician · San Francisco, CA
- NPI 1164400263
- Accepts Medicare
- 42 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
450 Sutter St., Suite 935
San Francisco, CA 94108
(415) 433-7761
fax (415) 433-7763
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- October 24, 2007
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A45478
- Medicaid
- CA #00A454780
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1164400263. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
371
Distinct HCPCS
2
Medicare allowed
$101,539
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 252 | 28 | $333 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 119 | 53 | $149 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 116. This provider delivers 3.2× the peer median.Open Payments
Industry payments received
All-time total
$568
Transactions
11
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 5 | $236.16 | |
| Ardelyx, Inc. | 3 | $174.87 | |
| Amgen Inc. | 3 | $156.79 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
429
Patients
79
Total drug cost
$171,724
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 56 | 20 | $923 |
| Prosol (Parenteral Amino Acid 20% No.1) | Brand | 56 | 0 | $8,242 |
| Furosemide | Generic | 50 | 17 | $453 |
| Sevelamer Carbonate | Generic | 44 | 20 | $28,731 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 34 | 11 | $60,300 |
| Famotidine | Generic | 24 | 0 | $657 |
| Terazosin Hcl | Generic | 24 | 0 | $735 |
| Renvela (Sevelamer Carbonate) | Brand | 23 | 0 | $66,507 |
| Losartan Potassium | Generic | 22 | 0 | $345 |
| Calcium Acetate | Generic | 21 | 11 | $3,181 |
Hospital affiliations
Frequently asked questions
What is Dr. Kok-Tong Ling's medical specialty?
Dr. Kok-Tong Ling practices Nephrology Physician in San Francisco, CA.
Where does Dr. Kok-Tong Ling practice?
Dr. Kok-Tong Ling practices at 450 Sutter St., Suite 935, San Francisco, CA 94108. Office phone: 4154337761.
What is Dr. Kok-Tong Ling's NPI?
Dr. Kok-Tong Ling's National Provider Identifier (NPI) is 1164400263, issued by NPPES.
Does Dr. Kok-Tong Ling accept Medicare assignment?
Yes. Dr. Kok-Tong Ling accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kok-Tong Ling commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 2-3 physician visits per month (20 years or older) (HCPCS 90961); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.