Wei Kwok, M.D.
NPI 1861430902 · Pain Medicine (Anesthesiology) Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wei Kwok, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Fullerton, CA (NPI 1861430902).
Provider details
- NPI number
- 1861430902
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A90368 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,895 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 | 819 | $136 |
| Acupuncture With Electrical Stimulation, Initial 15 Minutes97813 | 245 | $49 |
| Acupuncture With Electrical Stimulation, Each Additional 15 Minutes97814 | 245 | $40 |
| Therapy Procedure Using Massage, Each 15 Minutes97124 | 229 | $34 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $99 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance62323 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 544 | 85 |
| Gabapentin | 217 | 58 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 207 | 33 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 111 | 15 |
| Fentanyl | 105 | 11 |
| Tramadol Hcl | 87 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$538 across 25 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
Additional practice locations (1)
- 15785 Laguna Canyon Rd Ste 330Irvine, CA 92618-3178Phone: (714) 525-8822Fax: (714) 525-5193
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2020-12-22
- Certified
- 2020-12-22
Frequently asked questions
- What is Wei Kwok's NPI number?
- Wei Kwok's National Provider Identifier (NPI) is 1861430902, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wei Kwok's specialty?
- Wei Kwok is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Wei Kwok located?
- Wei Kwok's practice location on file with NPPES is 150 Laguna Rd Ste a, Fullerton, CA 92835-3614.
- What is Wei Kwok's phone number?
- The practice phone number listed in the NPPES registry for Wei Kwok is (714) 525-8822.
- Does Wei Kwok accept Medicare?
- Wei Kwok is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wei Kwok's NPI active?
- Yes — Wei Kwok's NPI (1861430902) is active in the NPPES registry as of the last update on 2020-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.