Lawrence Chihyung Ku, MD
Gastroenterology Physician · Oakland, CA
Lawrence Chihyung Ku, MD is a gastroenterology physician with a practice address in Oakland, California, and NPI 1912439266, issued on Mar 28, 2017. Check the license (California A157723, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lawrence Chihyung Ku
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A157723 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3600 Broadway, Oakland, CA 94611
- Phone
- (510) 752-1282
- Enumerated
- Mar 28, 2017
- Record last updated
- Aug 2, 2023
- Medicare enrollment
- Enrolled (PECOS I20230720003970); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2017
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 3600 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kritika Amanjee, MD, MBAStudent in an Organized Health Care Education/Training Program1962192666
- Eduardo AmarCertified Respiratory Therapist1811460546
Verify Lawrence Chihyung Ku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A157723Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average gastroenterology physician in 2024
173 Medicare Part D claims for 105 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Gavilyte-C30 claims
- Omeprazole25 claims
- Pantoprazole Sodium16 claims
- Lubiprostone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $26.31
1 payment: food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through one group practice
- Permanente Medical Group IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lawrence Chihyung Ku among 2,140 gastroenterology physician records in California
Lawrence Chihyung Ku, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 91% of them.
- NPI issued2017 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2017 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Oakland → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kimberly Cusato, MDOakland, CA 946111487733531
- Keith Fiman, M.D.Piedmont, CA 946111578564506
- Mitchell Liverant, M.D.Oakland, CA 946111679872444
- Cynthia Morton, MDOakland, CA 946111801974605
- Sassan Pazirandeh, MDOakland, CA 946111952489759
- Stephanie Santos, MDOakland, CA 946111225169246
- Michael Udkow, MDOakland, CA 946111952489742
- Hank Wang, MDOakland, CA 946111376785048
Common questions
What is Lawrence Chihyung Ku, MD's NPI number?
Lawrence Chihyung Ku, MD's National Provider Identifier (NPI) is 1912439266, issued on Mar 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence Chihyung Ku, MD located?
The NPPES record lists a practice address at 3600 Broadway, Oakland, CA, 94611. Phone: (510) 752-1282. Providers update this record themselves, so call before visiting.
How can I verify Lawrence Chihyung Ku, MD's license?
NPPES lists California license number A157723, 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.
How much does Lawrence Chihyung Ku, MD prescribe under Medicare Part D?
In 2024, Lawrence Chihyung Ku, MD had 173 Medicare Part D claims for 105 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.