Ruth Hsiao, MD
NPI 1174942882 · Hospitalist Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Hsiao, MD is a Hospitalist Physician provider in San Diego, CA (NPI 1174942882).
Provider details
- NPI number
- 1174942882
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A137828 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bisoprolol Fumarate | 249 | 92 |
| Empagliflozinbrand: Jardiance | 194 | 73 |
| Spironolactone | 179 | 70 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 158 | 55 |
| Amlodipine Besylate | 125 | 53 |
| Carvedilol | 118 | 53 |
| Furosemide | 88 | 44 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$88 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-09
- Last updated
- 2021-12-08
Frequently asked questions
- What is Ruth Hsiao's NPI number?
- Ruth Hsiao's National Provider Identifier (NPI) is 1174942882, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Hsiao's specialty?
- Ruth Hsiao is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Hsiao located?
- Ruth Hsiao's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Ruth Hsiao's phone number?
- The practice phone number listed in the NPPES registry for Ruth Hsiao is (619) 471-9186.
- Does Ruth Hsiao accept Medicare?
- Ruth Hsiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Hsiao's NPI active?
- Yes — Ruth Hsiao's NPI (1174942882) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.