Mounzer B. Al Samman, M.D.
Gastroenterology Physician · Fairfield, CA
Mounzer B. Al Samman, M.D. is a gastroenterology physician with a practice address in Fairfield, California, and NPI 1700822160, issued on Jun 22, 2006. Check the license (California A50016, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mounzer B. Al Samman
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A50016 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5140 Business Center Dr, Fairfield, CA 94534
- Phone
- (707) 646-3555
- Enumerated
- Jun 22, 2006
- Record last updated
- Jul 31, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (707) 646-3556
- Medicare enrollment
- Enrolled (PECOS I20050128000273); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 5140 Business Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gilbert Chang, MDPediatrics Physician1538195755
- Alina Hongsakaphadana, M.D.Family Medicine Physician1740304237
- Marianne Wachalovsky, FNPFamily Nurse Practitioner1316247737
Verify Mounzer B. Al Samman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50016Check 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
1,722 Medicare Part D claims for 505 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole380 claims
- Pantoprazole Sodium254 claims
- Linzess134 claims
- Gavilyte-C96 claims
- Dicyclomine Hcl81 claims
- Sod Sulf-Potass Sulf-Mag Sulf65 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: $1,396.09
66 payments; by number, the most common kind was 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 2 group practices
- Northbay Health Medical FoundationVacaville, CA
- Northbay Physicians Surgery Center, LLCVacaville, 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 Mounzer B. Al Samman, M.D.'s NPI number?
Mounzer B. Al Samman, M.D.'s National Provider Identifier (NPI) is 1700822160, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mounzer B. Al Samman, M.D. located?
The NPPES record lists a practice address at 5140 Business Center Dr, Fairfield, CA, 94534. Phone: (707) 646-3555. Providers update this record themselves, so call before visiting.
How can I verify Mounzer B. Al Samman, M.D.'s license?
NPPES lists California license number A50016, 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 Mounzer B. Al Samman, M.D. prescribe under Medicare Part D?
In 2024, Mounzer B. Al Samman, M.D. had 1,722 Medicare Part D claims for 505 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.