Nan-Shing Hsu, M.D.
NPI 1598731804 · Family Medicine Physician · Federal Way, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nan-Shing Hsu, M.D. is a Family Medicine Physician provider in Federal Way, WA (NPI 1598731804).
Provider details
- NPI number
- 1598731804
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD00041614 (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
151 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $143 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 51 | $206 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 18 | $151 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $104 |
| Administration of Influenza Virus VaccineG0008 | 12 | $36 |
Typical Medicare-allowed amounts for these services range $36–$206 (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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 82 | 55 |
| Losartan Potassium | 55 | 38 |
| Hydrochlorothiazide | 52 | 27 |
| Omeprazole | 49 | 26 |
| Metoprolol Succinate | 49 | 27 |
| Amlodipine Besylate | 43 | 27 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-27
- Last updated
- 2016-02-18
Frequently asked questions
- What is Nan-Shing Hsu's NPI number?
- Nan-Shing Hsu's National Provider Identifier (NPI) is 1598731804, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nan-Shing Hsu's specialty?
- Nan-Shing Hsu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nan-Shing Hsu located?
- Nan-Shing Hsu's practice location on file with NPPES is 32018 23rd Ave S, Federal Way, WA 98003-6022.
- What is Nan-Shing Hsu's phone number?
- The practice phone number listed in the NPPES registry for Nan-Shing Hsu is (253) 839-3030.
- Does Nan-Shing Hsu accept Medicare?
- Nan-Shing Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nan-Shing Hsu's NPI active?
- Yes — Nan-Shing Hsu's NPI (1598731804) is active in the NPPES registry as of the last update on 2016-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.