Diane Lynn Chau, MD
Internal Medicine Physician · Long Beach, CA
Diane Lynn Chau, MD is an internal medicine physician with a practice address in Long Beach, California, and NPI 1780609834, issued on Jul 12, 2006. Check the license (California A65089, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diane Lynn Chau
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A65089 CA
9807 HI
Self-reported in NPPES; status is on the state search - Practice location
- 200 Oceangate Ste 100, Long Beach, CA 90802
- Phone
- (888) 562-5442
- Enumerated
- Jul 12, 2006
- Record last updated
- Aug 24, 2023
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 200 Oceangate Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tirsit AbiyFamily Nurse Practitioner1306526041
- Isis Acosta, NPPsychiatric/Mental Health Nurse Practitioner1700399524
- Lynda Aduba, NPPsychiatric/Mental Health Nurse Practitioner1407393903
- Jhune Pearl Jacosalem Aguilar, FNP-CFamily Nurse Practitioner1699522870
- Ibukun Akinsola, FNPFamily Nurse Practitioner1396592564
- Daisy Alvarado, FNP-C, RN, PHN, CBNFamily Nurse Practitioner1114714284
Verify Diane Lynn Chau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $124.16
1 payment: food and beverage; the largest payer was Sanofi-Aventis U.S. LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Diane Lynn Chau among 17,696 internal medicine physician records in California
Diane Lynn Chau, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
221 internal medicine physician records list a practice address in Long Beach
They are 221 of the 13,650 NPPES records with a practice address in Long Beach, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Long Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Blanca Almeida, M.D.Long Beach, CA 908021508897760
- Scott Geiler, PA-CLong Beach, CA 908021053036897
- Diane Johnson, M.D.Long Beach, CA 908021013962273
- Henry JohnsonLong Beach, CA 908021760727614
- Alexandria Lee, M.D.Long Beach, CA 908031598128183
- Rebecca Yamarik, MDLong Beach, CA 908031285673202
- Jimmy Diep, M.D.Long Beach, CA 908041912944216
- John Duong, M.D.Long Beach, CA 908041356364889
Common questions
What is Diane Lynn Chau, MD's NPI number?
Diane Lynn Chau, MD's National Provider Identifier (NPI) is 1780609834, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane Lynn Chau, MD located?
The NPPES record lists a practice address at 200 Oceangate Ste 100, Long Beach, CA, 90802. Phone: (888) 562-5442. Providers update this record themselves, so call before visiting.
How can I verify Diane Lynn Chau, MD's license?
NPPES lists California license number A65089, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.