Tammy Hwang, NP
NPI 1639681513 · Family Nurse Practitioner · San Jose, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Hwang, NP is a Family Nurse Practitioner provider in San Jose, CA (NPI 1639681513).
Provider details
- NPI number
- 1639681513
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95007792 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
5 documented practice locations
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
Additional practice locations (4)
- 2039 Forest Ave Ste 105San Jose, CA 95128-4815Phone: (408) 947-2929
- 455 Oconnor Dr Ste 200San Jose, CA 95128-1632Phone: (408) 283-7676
- 1642 E Capitol ExpySan Jose, CA 95121-1800Phone: (408) 445-3431Fax: (408) 445-3400
- 1333 Meridian AveSan Jose, CA 95125-5212Phone: (408) 445-3400Fax: (408) 445-1683
Registry dates
- Enumerated
- 2017-10-31
- Last updated
- 2025-06-05
- Certified
- 2025-06-05
Frequently asked questions
- What is Tammy Hwang's NPI number?
- Tammy Hwang's National Provider Identifier (NPI) is 1639681513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Hwang's specialty?
- Tammy Hwang is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Hwang located?
- Tammy Hwang's practice location on file with NPPES is 2506 Samaritan Ct, San Jose, CA 95124-4001.
- What is Tammy Hwang's phone number?
- The practice phone number listed in the NPPES registry for Tammy Hwang is (408) 523-3870.
- Does Tammy Hwang accept Medicare?
- Tammy Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Hwang's NPI active?
- Yes — Tammy Hwang's NPI (1639681513) is active in the NPPES registry as of the last update on 2025-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.