Doctor profile · Federal record
Dr. Eric Chang, MD
Infectious Disease Physician (CMS: Infectious Disease) · Internal Medicine Physician · Portland, OR
- NPI 1720290190
- Accepts Medicare
- MIPS 83.2 / 100 · 2023
- 24 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
2801 N Gantenbein Ave, Rm 4117
Portland, OR 972271623
(503) 413-6807
fax (503) 413-2144
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- August 6, 2008
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- Oregon #MD26818
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1720290190. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
329
Distinct HCPCS
6
Medicare allowed
$32,944
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 176 | 79 | $80 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 50 | 50 | $176 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 50 | 27 | $121 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 23 | 19 | $50 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 16 | 16 | $127 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 11 | $67 |
In context: peer comparison
Among 28 peers in Portland Infectious Disease Physician, average services per provider: 42. This provider delivers 7.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
294
Patients
0
Total drug cost
$185,038
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ceftriaxone (Ceftriaxone Sodium) | Brand | 79 | 0 | $2,359 |
| Cefazolin Sodium | Generic | 57 | 0 | $2,662 |
| Triumeq (Abacavir/Dolutegravir/Lamivudi) | Brand | 30 | 0 | $106,391 |
| Cephalexin | Generic | 23 | 0 | $463 |
| Amoxicillin | Generic | 20 | 0 | $179 |
| Vancomycin Hcl | Generic | 20 | 0 | $2,509 |
| Maraviroc | Generic | 15 | 0 | $16,424 |
| Biktarvy (Bictegrav/Emtricit/Tenofov Ala) | Brand | 14 | 0 | $53,586 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 13 | 0 | $106 |
| Doxycycline Hyclate | Generic | 12 | 0 | $204 |
Hospital affiliations
Frequently asked questions
What is Dr. Eric Chang's medical specialty?
Dr. Eric Chang practices Infectious Disease Physician in Portland, OR.
Where does Dr. Eric Chang practice?
Dr. Eric Chang practices at 2801 N Gantenbein Ave, Portland, OR 972271623. Office phone: 5034136807.
What is Dr. Eric Chang's NPI?
Dr. Eric Chang's National Provider Identifier (NPI) is 1720290190, issued by NPPES.
Does Dr. Eric Chang accept Medicare assignment?
Yes. Dr. Eric Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eric Chang commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.