Ian Liao, MD
NPI 1154586105 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Liao, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1154586105).
Provider details
- NPI number
- 1154586105
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 50469 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
502 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 304 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 79 | $109 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 60 | $47 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 45 | $113 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $168 |
Typical Medicare-allowed amounts for these services range $47–$168 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefuroxime Axetilbrand: Cefuroxime | 32 | 31 |
| Metoprolol Tartrate | 29 | 18 |
| Torsemide | 24 | 20 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 19 | 12 |
| Oxycodone Hcl | 19 | 19 |
| Dapagliflozin Propanediolbrand: Farxiga | 18 | 12 |
Practice location
Mailing address
Additional practice locations (1)
- 1700 E 19th StThe Dalles, OR 97058-3317Phone: (541) 296-7285Fax: (541) 296-7420
Registry dates
- Enumerated
- 2008-07-18
- Last updated
- 2023-04-24
- Certified
- 2023-04-24
Frequently asked questions
- What is Ian Liao's NPI number?
- Ian Liao's National Provider Identifier (NPI) is 1154586105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Liao's specialty?
- Ian Liao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Liao located?
- Ian Liao's practice location on file with NPPES is 9205 Sw Barnes Rd, Portland, OR 97225-6603.
- What is Ian Liao's phone number?
- The practice phone number listed in the NPPES registry for Ian Liao is (503) 216-2906.
- Does Ian Liao accept Medicare?
- Ian Liao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Liao's NPI active?
- Yes — Ian Liao's NPI (1154586105) is active in the NPPES registry as of the last update on 2023-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.