Theresa Mai-Hwang, PA-C
NPI 1629670914 · Physician Assistant · Stanford, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Mai-Hwang, PA-C is a Physician Assistant provider in Stanford, CA (NPI 1629670914).
Provider details
- NPI number
- 1629670914
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 58830 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
5 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 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Empagliflozinbrand: Jardiance | 645 | 157 |
| Semaglutidebrand: Ozempic | 462 | 104 |
| Metformin Hcl | 394 | 131 |
| Repaglinide | 371 | 114 |
| Levothyroxine Sodium | 314 | 94 |
| Atorvastatin Calcium | 276 | 101 |
| Semaglutide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,600 across 141 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
- 2020-11-11
- Last updated
- 2025-12-23
- Certified
- 2025-12-23
Frequently asked questions
- What is Theresa Mai-Hwang's NPI number?
- Theresa Mai-Hwang's National Provider Identifier (NPI) is 1629670914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Mai-Hwang's specialty?
- Theresa Mai-Hwang is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Mai-Hwang located?
- Theresa Mai-Hwang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Theresa Mai-Hwang's phone number?
- The practice phone number listed in the NPPES registry for Theresa Mai-Hwang is (650) 723-4000.
- Does Theresa Mai-Hwang accept Medicare?
- Theresa Mai-Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Mai-Hwang's NPI active?
- Yes — Theresa Mai-Hwang's NPI (1629670914) is active in the NPPES registry as of the last update on 2025-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.