Ruth Hsu, MD
NPI 1558757120 · Psychiatry Physician · Menlo Park, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Hsu, MD is a Psychiatry Physician provider in Menlo Park, CA (NPI 1558757120).
Provider details
- NPI number
- 1558757120
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A144115 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-10
- Last updated
- 2021-09-13
- Certified
- 2021-08-25
Frequently asked questions
- What is Ruth Hsu's NPI number?
- Ruth Hsu's National Provider Identifier (NPI) is 1558757120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Hsu's specialty?
- Ruth Hsu is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Hsu located?
- Ruth Hsu's practice location on file with NPPES is 193 Jefferson Dr, Menlo Park, CA 94025-1114.
- What is Ruth Hsu's phone number?
- The practice phone number listed in the NPPES registry for Ruth Hsu is (650) 521-5440.
- Does Ruth Hsu accept Medicare?
- Ruth Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Hsu's NPI active?
- Yes — Ruth Hsu's NPI (1558757120) is active in the NPPES registry as of the last update on 2021-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.