Doctor profile · Federal record
Dr. Wooin Ahn, M.D.
Nephrology Physician (CMS: Nephrology) · Internal Medicine Physician · Internal Medicine Physician · Nephrology Physician · Nephrology Physician · Portland, OR
- NPI 1366608267
- Accepts Medicare
- MIPS 93.4 / 100 · 2023
- 28 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3181 Sw Sam Jackson Park RD
Portland, OR 972393011
(503) 494-3442
fax (503) 494-5330 - Additional location
-
161 Fort Washington Ave, Suite 202
New York, NY 100323729
(212) 305-0320
fax (212) 342-1814
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- June 30, 2023
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State licenses (3)
- Oregon #MD213267 · Massachusetts #249946 · New York #270920
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366608267. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
241
Distinct HCPCS
3
Medicare allowed
$25,310
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 182 | 58 | $87 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 37 | 36 | $144 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 22 | 22 | $189 |
In context: peer comparison
Among 24 peers in Portland Nephrology Physician, average services per provider: 83. This provider delivers 2.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
78
Patients
0
Total drug cost
$17,906
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Torsemide | Generic | 23 | 0 | $490 |
| Losartan Potassium | Generic | 18 | 0 | $178 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 13 | 0 | $13,644 |
| Amlodipine Besylate | Generic | 12 | 0 | $100 |
| Sevelamer Carbonate | Generic | 12 | 0 | $3,495 |
Hospital affiliations
Frequently asked questions
What is Dr. Wooin Ahn's medical specialty?
Dr. Wooin Ahn practices Nephrology Physician in Portland, OR.
Where does Dr. Wooin Ahn practice?
Dr. Wooin Ahn practices at 3181 Sw Sam Jackson Park RD, Portland, OR 972393011. Office phone: 5034943442.
What is Dr. Wooin Ahn's NPI?
Dr. Wooin Ahn's National Provider Identifier (NPI) is 1366608267, issued by NPPES.
Does Dr. Wooin Ahn accept Medicare assignment?
Yes. Dr. Wooin Ahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Wooin Ahn commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.