John Wong, MD
NPI 1659336402 · Internal Medicine Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Hospice/Palliative Care · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Wong, MD is a Internal Medicine Physician provider in Torrance, CA (NPI 1659336402).
Provider details
- NPI number
- 1659336402
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A51406 (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
20 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 · 99 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 161 | 53 |
| Atorvastatin Calcium | 135 | 72 |
| Insulin Regular, Humanbrand: Humulin R | 127 | 54 |
| Trazodone Hcl | 118 | 37 |
| Donepezil Hcl | 109 | 42 |
| Escitalopram Oxalate | 104 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
- 2006-04-17
- Last updated
- 2021-12-01
Frequently asked questions
- What is John Wong's NPI number?
- John Wong's National Provider Identifier (NPI) is 1659336402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Wong's specialty?
- John Wong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Wong located?
- John Wong's practice location on file with NPPES is 19601 Mariner Ave, Torrance, CA 90503-1647.
- What is John Wong's phone number?
- The practice phone number listed in the NPPES registry for John Wong is (310) 214-0811.
- Does John Wong accept Medicare?
- John Wong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Wong's NPI active?
- Yes — John Wong's NPI (1659336402) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.