David A. Tessler, DO
Gastroenterology Physician · Mesa, AZ
David A. Tessler, DO is a gastroenterology physician with a practice address in Mesa, Arizona, and NPI 1659359883, issued on Jan 6, 2006. Check the license (Arizona 4213, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- David A. Tessler
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 4213 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3638 E Southern Ave Ste C101, Mesa, AZ 85206
- Phone
- (480) 564-3763
- Enumerated
- Jan 6, 2006
- Record last updated
- Jan 30, 2026
- Fax
- (480) 716-3723
- Medicaid ID
- 946105 AZ
- Medicare enrollment
- Enrolled (PECOS I20050609000266); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1998
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 3638 E Southern Ave Ste C101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara Ancello, D.O.Gastroenterology Physician1720420557
- David Leff, DOGastroenterology Physician1619956505
- Kelly Matthews, NPFamily Nurse Practitioner1861941619
Verify David A. Tessler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 4213Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% more Medicare Part D claims than the average gastroenterology physician in 2024
1,621 Medicare Part D claims for 529 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Pantoprazole Sodium277 claims
- Sod Sulf-Potass Sulf-Mag Sulf154 claims
- Omeprazole112 claims
- Clenpiq70 claims
- Linzess68 claims
- Colestipol Hcl63 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: $32,485.87
169 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 3 group practices
- Arizona Gastrointestinal Associates PLCScottsdale, AZ
- Bhsm Rehabilitation LLCMesa, AZ
- Central Arizona Medical Associates PCMesa, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David A. Tessler among 403 gastroenterology physician records in Arizona
David A. Tessler, DO 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 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 41% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1998 · median 2001 among the 295 with a school on file
- Record last updated2026 · 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
- Doo-Sang Cho, M.D.Mesa, AZ 852061750376778
- Andrew Collins, M.D.Mesa, AZ 852061740275338
- Steven Kaiser, MDMesa, AZ 852061346219433
- Prem Kumar, MDMesa, AZ 852061700841350
- David Leff, DOMesa, AZ 852061619956505
- Shahbaz Qureshi, MDMesa, AZ 852061548370109
- Sudhakar Reddy, MDMesa, AZ 852061063458735
- Michael Seip, DOMesa, AZ 852061205815925
Common questions
What is David A. Tessler, DO's NPI number?
David A. Tessler, DO's National Provider Identifier (NPI) is 1659359883, issued on Jan 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David A. Tessler, DO located?
The NPPES record lists a practice address at 3638 E Southern Ave Ste C101, Mesa, AZ, 85206. Phone: (480) 564-3763. Providers update this record themselves, so call before visiting.
How can I verify David A. Tessler, DO's license?
NPPES lists Arizona license number 4213, 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 David A. Tessler, DO prescribe under Medicare Part D?
In 2024, David A. Tessler, DO had 1,621 Medicare Part D claims for 529 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.