What is Crystal Cu's NPI number?

Crystal Cu's National Provider Identifier (NPI) is 1639609001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Crystal Cu's specialty?

Crystal Cu is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).

Where is Crystal Cu located?

Crystal Cu's practice location on file with NPPES is 700 Lawrence Expy Dept 174, Santa Clara, CA 95051-5173.

What is Crystal Cu's phone number?

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

Does Crystal Cu accept Medicare?

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

Is Crystal Cu's NPI active?

Yes — Crystal Cu's NPI (1639609001) is active in the NPPES registry as of the last update on 2025-03-07.

IndividualActiveAccepts Medicare

Crystal Cu

NPI 1639609001 · Occupational Therapist · Santa Clara, CA

Enrolled with Medicare as Practitioner - Occupational Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Crystal Cu is a Occupational Therapist provider in Santa Clara, CA (NPI 1639609001).

Provider details

NPI number: 1639609001
Entity type: Individual
Primary specialty: Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Occupational TherapistPrimary225X00000XLicense 18639 (CA)
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
9 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
4 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 Dept 174

Santa Clara, CA 95051-5173

Phone: (408) 851-1000

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address

820 N Delaware St Apt 309

San Mateo, CA 94401-1540

Additional practice locations (3)

30 Avenue Portola
Suite C &d
El Granada, CA 94018
Phone: (650) 576-5630
425 Divisadero St Ste 300
San Francisco, CA 94117-2242
Phone: (415) 551-0975
3555 Whipple Rd Bldg a
Union City, CA 94587-1507
Phone: (650) 675-4289

Enumerated: 2017-06-18
Last updated: 2025-03-07
Certified: 2025-03-07

Frequently asked questions

What is Crystal Cu's NPI number?: Crystal Cu's National Provider Identifier (NPI) is 1639609001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Crystal Cu's specialty?: Crystal Cu is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
Where is Crystal Cu located?: Crystal Cu's practice location on file with NPPES is 700 Lawrence Expy Dept 174, Santa Clara, CA 95051-5173.
What is Crystal Cu's phone number?: The practice phone number listed in the NPPES registry for Crystal Cu is (408) 851-1000.
Does Crystal Cu accept Medicare?: Crystal Cu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Crystal Cu's NPI active?: Yes — Crystal Cu's NPI (1639609001) is active in the NPPES registry as of the last update on 2025-03-07.

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