Dr. Ernest K. Lau, MD
- Medicare services, 2019
- 22
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 186
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 1100 Veterans Boulevard, Redwood City, CA 94063
- Practice phone
- Call (650) 299-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lau's professional email, personal email and mobile number
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Dr. Ernest K. Lau is a hospitalist in Redwood City, California
Dr. Lau practices at Redwood City Medical Center in Redwood City, California, part of Kaiser Permanente.
Dr. Lau's NPI, 1255419842, was assigned on November 1, 2006. Dr. Lau holds California license A79972.
- NPI
- 1255419842NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638079320
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 299-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ernest K. Lau practices at Redwood City Medical Center in Redwood City, California
Dr. Lau's primary practice is Redwood City Medical Center, at 1100 Veterans Boulevard, Redwood City, CA 94063 in San Mateo County. The practice phone is (650) 299-2000.
- Redwood City Medical Center1100 Veterans Boulevard, Redwood City, CA 94063 · San Mateo CountyPhone(650) 299-2000
Source: Dmand AI Affiliation Data
Dr. Ernest K. Lau is affiliated with 2 sites of care and 1 medical group
Dr. Lau's primary practice is Redwood City Medical Center in Redwood City, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Lau to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ernest K. Lau's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lau practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Redwood City Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ernest K. Lau is one of 3,186 hospitalists in California
Hospitalist is Dr. Lau's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Lau is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Lau
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ernest K. Lau billed Medicare for 22 services in 2019
CMS data shows 22 Medicare services from Dr. Lau across 1 procedure code in 2019, for 11 Medicare patients. Medicare paid $1,352 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lau compared with the California median for hospitalists, 2019
- Dr. Lau
- California median
- Medicare services
- 22vs 43095% below
- Medicare patients
- 11vs 20195% below
- Part D claims
- 24vs 6965% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Lau's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ernest K. Lau treated 11 Medicare patients in 2024, average age 67
CMS counts 11 Medicare patients who saw Dr. Lau in 2024. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lau's median patient age at 75, with 49% women.
Dr. Lau's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ernest K. Lau wrote 186 Medicare Part D claims in 2024
In 2024, Dr. Lau wrote 186 Medicare Part D claims for 100 patients. 89% of them were for generic drugs. CMS names the drug for 24 of them, across 1 drug with 11 or more claims each, at $339 in total drug cost. In 2023, CMS named 55 claims across 3 drugs.
Dr. Lau's Part D claims by kind of drug, 2024
- Generic166 claims89%
- Brand-name and other20 claims11%
Dr. Lau's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lau's Part D claims, 2024
- Antibiotics31%57 of 186 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 552024: 2456%
Drugs named by CMS: 1 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ernest K. Lau takes part in Medicare
Dr. Lau accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Ernest K. Lau's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ernest K. Lau
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ernest K. Lau's NPI number?
Dr. Ernest K. Lau's NPI number is 1255419842. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ernest K. Lau?
Dr. Ernest K. Lau is a hospitalist in Redwood City, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ernest K. Lau practice?
Dr. Lau practices at 1100 Veterans Boulevard, Redwood City, CA 94063. Dr. Lau's primary practice is Redwood City Medical Center in Redwood City, California, part of Kaiser Permanente. Dmand AI also links Dr. Lau to 1 group practice or clinic.
What is Dr. Ernest K. Lau's office phone number?
The practice phone on file for Dr. Lau is (650) 299-2000.
What is Dr. Ernest K. Lau's medical license number?
Dr. Lau holds California license A79972.
Which hospitals is Dr. Ernest K. Lau affiliated with?
Dr. Lau practices at Redwood City Medical Center in Redwood City, California.
What medical group is Dr. Ernest K. Lau part of?
Dr. Lau is linked to The Permanente Medical Group, Inc.
Does Dr. Ernest K. Lau accept Medicare?
Yes. CMS data shows Dr. Lau billed Medicare for 22 services in 2019, and Dr. Lau accepts Medicare assignment.
How many Medicare patients does Dr. Ernest K. Lau see?
CMS counts 11 Medicare patients who saw Dr. Lau in 2024, with an average age of 67.
What services does Dr. Ernest K. Lau bill to Medicare?
In 2019, Dr. Lau's most billed Medicare services were hospital inpatient care (99232).
What drugs does Dr. Ernest K. Lau prescribe most?
In 2024 Medicare Part D data, Dr. Lau's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass.
How long has Dr. Ernest K. Lau been practicing?
Dr. Lau graduated from medical school in 2000, 26 years ago.
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