Wendy Gu, M.D.
NPI 1740579994 · Internal Medicine Physician · Hacienda Heights, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wendy Gu, M.D. is a Internal Medicine Physician provider in Hacienda Heights, CA (NPI 1740579994).
Provider details
- NPI number
- 1740579994
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A124115 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,521 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 247 | $9 |
| Advance Care Planning, First 30 Minutes99497 | 246 | $87 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 240 | $21 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 232 | $140 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 208 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,351 | 403 |
| Amlodipine Besylate | 587 | 180 |
| Losartan Potassium | 562 | 169 |
| Metformin Hclbrand: Metformin Hcl Er | 338 | 90 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 287 | 79 |
| Metoprolol Succinate | 238 | 72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,731 across 71 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
- 2011-03-28
- Last updated
- 2021-04-20
- Certified
- 2021-04-20
Frequently asked questions
- What is Wendy Gu's NPI number?
- Wendy Gu's National Provider Identifier (NPI) is 1740579994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wendy Gu's specialty?
- Wendy Gu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Wendy Gu located?
- Wendy Gu's practice location on file with NPPES is 1850 S Azusa Ave, Hacienda Heights, CA 91745-6813.
- What is Wendy Gu's phone number?
- The practice phone number listed in the NPPES registry for Wendy Gu is (626) 964-2880.
- Does Wendy Gu accept Medicare?
- Wendy Gu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wendy Gu's NPI active?
- Yes — Wendy Gu's NPI (1740579994) is active in the NPPES registry as of the last update on 2021-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.