John M. Vierling, MD
Gastroenterology Physician · Houston, TX
John M. Vierling, MD is a gastroenterology physician with a practice address in Houston, Texas, and NPI 1043390388, issued on Oct 17, 2006. Check the license (Texas M8457, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John M. Vierling
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- M8457 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6620 Main St, Houston, TX 77030
- Phone
- (713) 798-2500
- Enumerated
- Oct 17, 2006
- Record last updated
- Dec 12, 2023
- Fax
- (713) 798-2505
- Medicaid IDs
- 175369101 TX
175369103 TX - Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 6620 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John M. Vierling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M8457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $47,095.10
31 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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.
John M. Vierling among 1,478 gastroenterology physician records in Texas
John M. Vierling, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileNo · 79% of these records are
- Record last updated2023 · 53% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Houston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Victor Ankoma-Sey, M.D.Houston, TX 770301144226515
- Margaret Bridges, MDHouston, TX 770301013992916
- Brooks Cash, MDHouston, TX 770301114920626
- Suresh Chari, M.D.Houston, TX 770301326011487
- Stuart Dobbs, M.D.Houston, TX 770301093706491
- Brian Douglas, M.D.Houston, TX 770301578540761
- Gulchin Ergun, M.D.Houston, TX 770301497746812
- Fredric Hochman, M.D.Houston, TX 770301306842992
Common questions
What is John M. Vierling, MD's NPI number?
John M. Vierling, MD's National Provider Identifier (NPI) is 1043390388, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John M. Vierling, MD located?
The NPPES record lists a practice address at 6620 Main St, Houston, TX, 77030. Phone: (713) 798-2500. Providers update this record themselves, so call before visiting.
How can I verify John M. Vierling, MD's license?
NPPES lists Texas license number M8457, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John M. Vierling, MD's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.