Winston Wong, M.D.
NPI 1932284817 · Internal Medicine Physician · La Palma, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Winston Wong, M.D. is a Internal Medicine Physician provider in La Palma, CA (NPI 1932284817).
Provider details
- NPI number
- 1932284817
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A45020 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
2,533 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 845 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 484 | $99 |
| Urinalysis, Manual Test81002 | 263 | $3 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 181 | $140 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 143 | $3 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 157 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 1,198 | 359 |
| Atorvastatin Calcium | 1,143 | 336 |
| Amlodipine Besylate | 737 | 211 |
| Semaglutidebrand: Ozempic | 501 | 103 |
| Sacubitril/Valsartanbrand: Entresto | 432 | 96 |
| Levothyroxine Sodium | 402 | 117 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,154 across 98 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
- 2006-10-26
- Last updated
- 2016-07-07
Frequently asked questions
- What is Winston Wong's NPI number?
- Winston Wong's National Provider Identifier (NPI) is 1932284817, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Winston Wong's specialty?
- Winston Wong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Winston Wong located?
- Winston Wong's practice location on file with NPPES is 7872 Walker St, La Palma, CA 90623-1796.
- What is Winston Wong's phone number?
- The practice phone number listed in the NPPES registry for Winston Wong is (714) 527-8777.
- Does Winston Wong accept Medicare?
- Winston Wong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Winston Wong's NPI active?
- Yes — Winston Wong's NPI (1932284817) is active in the NPPES registry as of the last update on 2016-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.