Lawrence K. Chan, M.D.
Gastroenterology Physician · Fairfield, CA
Lawrence K. Chan, M.D. is a gastroenterology physician with a practice address in Fairfield, California, and NPI 1356558332, issued on May 17, 2007. Check the license (California A89876, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lawrence K. Chan
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A89876 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2702 Low CT, Fairfield, CA 94534
- Phone
- (707) 427-4900
- Enumerated
- May 17, 2007
- Record last updated
- Jul 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090902000209); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 2702 Low CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mina AfnanPhysician Assistant1023889672
- Kareen Caragan, P.T.Physical Therapist1750462982
- Charo Castro, PTAPhysical Therapy Assistant1881775013
- Julie Chen, M.D.Ophthalmology Physician1740303064
- Martha Corcoran, M.D.Otolaryngology Physician1063487825
- Kyle Cunningham, LVNLicensed Vocational Nurse1447182142
Verify Lawrence K. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89876Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,723 Medicare Part D claims for 591 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole379 claims
- Pantoprazole Sodium230 claims
- Peg 3350-Electrolyte169 claims
- Famotidine150 claims
- Sod Sulf-Potass Sulf-Mag Sulf103 claims
- Linzess100 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: $454.12
3 payments; by number, the most common kind was food and beverage; the largest payer was Dutch Ophthalmic, USA. 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
- Sutter Valley Medical FoundationVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
Other gastroenterology physician records in California
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Lawrence K. Chan, M.D.'s NPI number?
Lawrence K. Chan, M.D.'s National Provider Identifier (NPI) is 1356558332, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence K. Chan, M.D. located?
The NPPES record lists a practice address at 2702 Low CT, Fairfield, CA, 94534. Phone: (707) 427-4900. Providers update this record themselves, so call before visiting.
How can I verify Lawrence K. Chan, M.D.'s license?
NPPES lists California license number A89876, 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 K. Chan, M.D. prescribe under Medicare Part D?
In 2024, Lawrence K. Chan, M.D. had 1,723 Medicare Part D claims for 591 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.