Lawrence Chau, DO
NPI 1396221438 · Hospitalist Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lawrence Chau, DO is a Hospitalist Physician provider in Anaheim, CA (NPI 1396221438).
Provider details
- NPI number
- 1396221438
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
617 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 50 Minutes99233 | 411 | $122 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 118 | $179 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 88 | $119 |
Typical Medicare-allowed amounts for these services range $119–$179 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 40 | — |
| Furosemide | 38 | 17 |
| Pantoprazole Sodium | 30 | 22 |
| Potassium Chloride | 24 | — |
| Amlodipine Besylate | 21 | 11 |
| Levofloxacin | 20 | 20 |
| Atorvastatin Calcium | 18 | — |
Practice location
Mailing address
Additional practice locations (1)
- 1720 E Cesar E Chavez AveLos Angeles, CA 90033-2414Phone: (323) 268-5000
Registry dates
- Enumerated
- 2018-07-12
- Last updated
- 2022-03-01
- Certified
- 2022-03-01
Frequently asked questions
- What is Lawrence Chau's NPI number?
- Lawrence Chau's National Provider Identifier (NPI) is 1396221438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Chau's specialty?
- Lawrence Chau is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Chau located?
- Lawrence Chau's practice location on file with NPPES is 1211 W La Palma Ave Ste 404, Anaheim, CA 92801-2806.
- What is Lawrence Chau's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Chau is (714) 772-8282.
- Does Lawrence Chau accept Medicare?
- Lawrence Chau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lawrence Chau's NPI active?
- Yes — Lawrence Chau's NPI (1396221438) is active in the NPPES registry as of the last update on 2022-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.