Geoffrey Liu, M.D.
NPI 1992135990 · Internal Medicine Physician · Olympia, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geoffrey Liu, M.D. is a Internal Medicine Physician provider in Olympia, WA (NPI 1992135990).
Provider details
- NPI number
- 1992135990
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 304065 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 206 | 65 |
| Lisinopril | 139 | 44 |
| Rosuvastatin Calcium | 126 | 42 |
| Losartan Potassium | 121 | 38 |
| Tamsulosin Hcl | 109 | 36 |
| Amlodipine Besylate | 106 | 36 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-11-13
- Last updated
- 2021-04-28
- Certified
- 2021-04-28
Frequently asked questions
- What is Geoffrey Liu's NPI number?
- Geoffrey Liu's National Provider Identifier (NPI) is 1992135990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geoffrey Liu's specialty?
- Geoffrey Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Geoffrey Liu located?
- Geoffrey Liu's practice location on file with NPPES is 700 Lilly Rd Ne, Olympia, WA 98506-5115.
- What is Geoffrey Liu's phone number?
- The practice phone number listed in the NPPES registry for Geoffrey Liu is (360) 923-7000.
- Does Geoffrey Liu accept Medicare?
- Geoffrey Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geoffrey Liu's NPI active?
- Yes — Geoffrey Liu's NPI (1992135990) is active in the NPPES registry as of the last update on 2021-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.