Doctor profile · Federal record
Dr. Catherine Pyun
Internal Medicine Physician (CMS: Internal Medicine) · Alameda, CA
- NPI 1154390144
- Accepts Medicare
- MIPS 22.5 / 100 · 2023
- 32 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2070 Clinton Ave
Alameda, CA 945014399
(510) 514-4397
fax (510) 814-4391
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- July 16, 2007
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A6823
- Medicaid
- CA #00AX68230
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154390144. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
748
Distinct HCPCS
9
Medicare allowed
$99,743
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 252 | 148 | $131 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 192 | 110 | $122 | |
99239 |
Hospital discharge day management, more than 30 minutes | 73 | 71 | $129 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 63 | 45 | $88 | |
99306 |
Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 41 | 41 | $206 | |
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 39 | 22 | $85 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 34 | 34 | $193 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 29 | 28 | $144 | |
99291 |
Critical care, first 30-74 minutes | 25 | 17 | $232 |
In context: peer comparison
Among 10 peers in Alameda Internal Medicine Physician, average services per provider: 170. This provider delivers 4.4× the peer median.Open Payments
Industry payments received
All-time total
$123
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 1 | $122.70 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
84
Patients
16
Total drug cost
$1,528
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 56 | 16 | $913 |
| Metoprolol Succinate | Generic | 16 | 0 | $302 |
| Gabapentin | Generic | 12 | 0 | $313 |
Hospital affiliations
Frequently asked questions
What is Dr. Catherine Pyun's medical specialty?
Dr. Catherine Pyun practices Internal Medicine Physician in Alameda, CA.
Where does Dr. Catherine Pyun practice?
Dr. Catherine Pyun practices at 2070 Clinton Ave, Alameda, CA 945014399. Office phone: 5105144397.
What is Dr. Catherine Pyun's NPI?
Dr. Catherine Pyun's National Provider Identifier (NPI) is 1154390144, issued by NPPES.
Does Dr. Catherine Pyun accept Medicare assignment?
Yes. Dr. Catherine Pyun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Catherine Pyun commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent nursing facility care with moderate level of medical decision making (HCPCS 99309); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.