Kei-Chuen Lau, MD
NPI 1154337319 · Psychiatry Physician · Bellflower, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kei-Chuen Lau, MD is a Psychiatry Physician provider in Bellflower, CA (NPI 1154337319).
Provider details
- NPI number
- 1154337319
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A43229 (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
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
2,985 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,552 | $81 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 966 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 350 | $101 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 73 | $179 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 44 | $119 |
Typical Medicare-allowed amounts for these services range $66–$179 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxyzine Pamoate | 52 | 37 |
| Clozapine | 40 | — |
| Olanzapinebrand: Olanzapine Odt | 39 | 26 |
| Ziprasidone Hcl | 38 | — |
| Benztropine Mesylate | 27 | 13 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 26 | — |
| Lithium Carbonatebrand: Lithium Carbonate Er | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$299 across 7 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
- 2006-07-31
- Last updated
- 2023-11-15
- Certified
- 2023-11-15
Frequently asked questions
- What is Kei-Chuen Lau's NPI number?
- Kei-Chuen Lau's National Provider Identifier (NPI) is 1154337319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kei-Chuen Lau's specialty?
- Kei-Chuen Lau is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Kei-Chuen Lau located?
- Kei-Chuen Lau's practice location on file with NPPES is 9928 Flower St, Bellflower, CA 90706-5453.
- What is Kei-Chuen Lau's phone number?
- The practice phone number listed in the NPPES registry for Kei-Chuen Lau is (562) 804-6476.
- Does Kei-Chuen Lau accept Medicare?
- Kei-Chuen Lau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kei-Chuen Lau's NPI active?
- Yes — Kei-Chuen Lau's NPI (1154337319) is active in the NPPES registry as of the last update on 2023-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.