What is Diane Hsu's NPI number?

Diane Hsu's National Provider Identifier (NPI) is 1972990562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Diane Hsu's specialty?

Diane Hsu is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).

Where is Diane Hsu located?

Diane Hsu's practice location on file with NPPES is 700 Lawrence Expy, Santa Clara, CA 95051-5173.

What is Diane Hsu's phone number?

The practice phone number listed in the NPPES registry for Diane Hsu is (408) 851-1000.

Does Diane Hsu accept Medicare?

Diane Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Diane Hsu's NPI active?

Yes — Diane Hsu's NPI (1972990562) is active in the NPPES registry as of the last update on 2024-06-25.

IndividualActiveAccepts Medicare

Diane Hsu, MD

NPI 1972990562 · Pediatrics Physician · Santa Clara, CA

Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Diane Hsu, MD is a Pediatrics Physician provider in Santa Clara, CA (NPI 1972990562).

Provider details

NPI number: 1972990562
Entity type: Individual
Primary specialty: Pediatrics PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No
License: 25MA10316800 (NJ)

Specialties & taxonomies

Pediatrics PhysicianPrimary208000000XLicense A161194 (CA)
Allopathic & Osteopathic Physicians
Pediatrics Physician208000000XLicense 25MA10316800 (NJ)
Allopathic & Osteopathic Physicians
Pediatric Gastroenterology Physician2080P0206XLicense 25MA10316800 (NJ)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(83/100 index)

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
3 documented practice locations

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

700 Lawrence Expy

Santa Clara, CA 95051-5173

Phone: (408) 851-1000

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address

1720 Villa St Apt 168

Mountain View, CA 94041-1590

Additional practice locations (2)

750 Welch Rd Ste 116
Palo Alto, CA 94304-1508
Phone: (650) 498-1968
89 French St
New Brunswick, NJ 08901-1935
Phone: (732) 235-7885

Enumerated: 2015-04-21
Last updated: 2024-06-25
Certified: 2024-06-25

Frequently asked questions

What is Diane Hsu's NPI number?: Diane Hsu's National Provider Identifier (NPI) is 1972990562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Diane Hsu's specialty?: Diane Hsu is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
Where is Diane Hsu located?: Diane Hsu's practice location on file with NPPES is 700 Lawrence Expy, Santa Clara, CA 95051-5173.
What is Diane Hsu's phone number?: The practice phone number listed in the NPPES registry for Diane Hsu is (408) 851-1000.
Does Diane Hsu accept Medicare?: Diane Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Diane Hsu's NPI active?: Yes — Diane Hsu's NPI (1972990562) is active in the NPPES registry as of the last update on 2024-06-25.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.