Andrew Hwang, MD
NPI 1679650535 · Internal Medicine Physician · Campbell, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Hwang, MD is a Internal Medicine Physician provider in Campbell, CA (NPI 1679650535).
Provider details
- NPI number
- 1679650535
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A80397 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 198 | 77 |
| Amlodipine Besylate | 121 | 52 |
| Levothyroxine Sodium | 110 | 43 |
| Losartan Potassium | 85 | 37 |
| Tamsulosin Hcl | 78 | 27 |
| Alendronate Sodium | 73 | 24 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 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
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2021-12-13
Frequently asked questions
- What is Andrew Hwang's NPI number?
- Andrew Hwang's National Provider Identifier (NPI) is 1679650535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Hwang's specialty?
- Andrew Hwang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Hwang located?
- Andrew Hwang's practice location on file with NPPES is 220 E Hacienda Ave, Campbell, CA 95008-6617.
- What is Andrew Hwang's phone number?
- The practice phone number listed in the NPPES registry for Andrew Hwang is (408) 236-6400.
- Does Andrew Hwang accept Medicare?
- Andrew Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Hwang's NPI active?
- Yes — Andrew Hwang's NPI (1679650535) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.