Elizabeth Hwang, M.D.
NPI 1679765838 · Gastroenterology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elizabeth Hwang, M.D. is a Gastroenterology Physician provider in Stanford, CA (NPI 1679765838).
Provider details
- NPI number
- 1679765838
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 243597 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
235 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 77 | $111 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 33 | $40 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 31 | $147 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 31 | $6 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 22 | $119 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tenofovir Alafenamidebrand: Vemlidy | 143 | 14 |
| Omeprazole | 84 | 34 |
| Rifaximinbrand: Xifaxan | 73 | 16 |
| Ursodiol | 60 | 15 |
| Furosemide | 54 | 15 |
| Entecavir | 46 | — |
| Pantoprazole Sodium | 41 | 17 |
| Spironolactone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-13
- Last updated
- 2024-04-26
- Certified
- 2024-04-26
Frequently asked questions
- What is Elizabeth Hwang's NPI number?
- Elizabeth Hwang's National Provider Identifier (NPI) is 1679765838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Hwang's specialty?
- Elizabeth Hwang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Elizabeth Hwang located?
- Elizabeth Hwang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Elizabeth Hwang's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Hwang is (650) 721-6190.
- Does Elizabeth Hwang accept Medicare?
- Elizabeth Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elizabeth Hwang's NPI active?
- Yes — Elizabeth Hwang's NPI (1679765838) is active in the NPPES registry as of the last update on 2024-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.