Doctor profile · Federal record
Dr. Thomas Yun, MD
Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Oakland, CA
- NPI 1336431568
- Accepts Medicare
- 15 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1411 E 31St St, Qic 22134
Oakland, CA 946021018
(510) 437-4965
fax (510) 437-5127
Credentials & registration
- NPI registered
- May 2011 — 15 yrs on file
- Profile last updated
- February 25, 2020
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A136957
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336431568. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
498
Distinct HCPCS
8
Medicare allowed
$61,362
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 313 | 254 | $134 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 49 | 49 | $179 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 35 | 34 | $102 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 31 | 30 | $16 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 29 | 29 | $136 | |
G0008 |
Administration of influenza virus vaccine | 15 | 15 | $33 | |
90662 |
Influenza vaccine split virus, preservative free | 14 | 14 | $72 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 12 | 11 | $84 |
In context: peer comparison
Among 78 peers in Oakland Internal Medicine Physician, average services per provider: 326. This provider delivers 1.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
415
Patients
176
Total drug cost
$8,055
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 69 | 34 | $1,517 |
| Amlodipine Besylate | Generic | 51 | 25 | $653 |
| Rosuvastatin Calcium | Generic | 46 | 18 | $1,537 |
| Losartan Potassium | Generic | 42 | 23 | $841 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 28 | 28 | $283 |
| Azithromycin | Generic | 24 | 24 | $138 |
| Levothyroxine Sodium | Generic | 21 | 0 | $439 |
| Zolpidem Tartrate | Generic | 20 | 0 | $166 |
| Metformin Hcl | Generic | 18 | 0 | $235 |
| Omeprazole | Generic | 18 | 11 | $477 |
Hospital affiliations
Frequently asked questions
What is Dr. Thomas Yun's medical specialty?
Dr. Thomas Yun practices Internal Medicine Physician in Oakland, CA.
Where does Dr. Thomas Yun practice?
Dr. Thomas Yun practices at 1411 E 31St St, Oakland, CA 946021018. Office phone: 5104374965.
What is Dr. Thomas Yun's NPI?
Dr. Thomas Yun's National Provider Identifier (NPI) is 1336431568, issued by NPPES.
Does Dr. Thomas Yun accept Medicare assignment?
Yes. Dr. Thomas Yun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Yun commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.