Brian Fung, MD
Gastroenterology Physician · Mesa, AZ
Brian Fung, MD is a gastroenterology physician with a practice address in Mesa, Arizona, and NPI 1366974164, issued on Mar 30, 2017. Check the license (Arizona 61850, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian Fung
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 61850 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 603 W Baseline RD Ste 200, Mesa, AZ 85210
- Phone
- (480) 461-1088
- Enumerated
- Mar 30, 2017
- Record last updated
- Oct 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20230623000857); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 603 W Baseline RD Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Philip Foutch, D.O.Gastroenterology Physician1790746717
- Andrew Grade, M.D.Gastroenterology Physician1881655819
- Nilay Kavathia, M.DGastroenterology Physician1174796999
- Rebecca McCollaum, A.P.R.N.Family Nurse Practitioner1669658969
- Sumir Patel, M.D.Gastroenterology Physician1801858113
- Laurie Peterson, P.A.Medical Physician Assistant1205898715
Verify Brian Fung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 61850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average gastroenterology physician in 2024
596 Medicare Part D claims for 275 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf171 claims
- Pantoprazole Sodium138 claims
- Omeprazole44 claims
- Colesevelam Hcl35 claims
- Nortriptyline Hcl27 claims
- Linzess24 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: $2,251.24
112 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., 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
- Arizona Digestive Health PCMesa, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Fung among 403 gastroenterology physician records in Arizona
Brian Fung, MD is one of 403 gastroenterology physician records with a practice address in Arizona. 84% 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 89% of them.
- NPI issued2017 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2017 · median 2001 among the 295 with a school on file
- Record last updated2023 · 47% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Arizona
There are 403 gastroenterology physician records in Arizona.
All 403 in Arizona → Every provider in Mesa → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Philip Foutch, D.O.Mesa, AZ 852101790746717
- Andrew Grade, M.D.Mesa, AZ 852101881655819
- Nilay Kavathia, M.DMesa, AZ 852101174796999
- Sumir Patel, M.D.Mesa, AZ 852101801858113
- Robert Sawyer, M.D.Mesa, AZ 852101487616892
- Shiv Verma, MDMesa, AZ 852101811939747
- Howard ChungMesa, AZ 852091497246615
- Sameeha Khalid, DOMesa, AZ 852091114489705
Common questions
What is Brian Fung, MD's NPI number?
Brian Fung, MD's National Provider Identifier (NPI) is 1366974164, issued on Mar 30, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Brian Fung, MD located?
The NPPES record lists a practice address at 603 W Baseline RD Ste 200, Mesa, AZ, 85210. Phone: (480) 461-1088. Providers update this record themselves, so call before visiting.
How can I verify Brian Fung, MD's license?
NPPES lists Arizona license number 61850, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Fung, MD prescribe under Medicare Part D?
In 2024, Brian Fung, MD had 596 Medicare Part D claims for 275 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.