Thuan Ong, MD, MPH
NPI 1801872635 · Geriatric Medicine (Internal Medicine) Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thuan Ong, MD, MPH is a Geriatric Medicine (Internal Medicine) Physician provider in Seattle, WA (NPI 1801872635).
Provider details
- NPI number
- 1801872635
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- MD60011516 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
268 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) |
|---|---|---|
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 110 | $201 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 55 | $84 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 44 | $120 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 34 | $171 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 25 | $147 |
Typical Medicare-allowed amounts for these services range $84–$201 (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 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 102 | 22 |
| Levothyroxine Sodium | 78 | 14 |
| Metoprolol Succinate | 52 | 12 |
| Amlodipine Besylate | 46 | 23 |
| Gabapentin | 40 | 13 |
| Sertraline Hcl | 36 | — |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-22
- Last updated
- 2013-12-20
Frequently asked questions
- What is Thuan Ong's NPI number?
- Thuan Ong's National Provider Identifier (NPI) is 1801872635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thuan Ong's specialty?
- Thuan Ong is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Thuan Ong located?
- Thuan Ong's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Thuan Ong's phone number?
- The practice phone number listed in the NPPES registry for Thuan Ong is (206) 744-4191.
- Does Thuan Ong accept Medicare?
- Thuan Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thuan Ong's NPI active?
- Yes — Thuan Ong's NPI (1801872635) is active in the NPPES registry as of the last update on 2013-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.