Dr. John M. Vierling, MD
- Medicare services, 2017
- 35
- Part D claims, 2020
- 16
- Publications
- 172
- Clinical trials
- 7
- Industry payments
- $402,739
- Practice address
- 2002 Holcombe Blvd, Houston, TX 77030
- Practice phone
- Call (713) 798-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Vierling's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John M. Vierling is a gastroenterologist in Houston, Texas
Dr. Vierling practices in Houston, Texas.
Dr. Vierling's NPI, 1043390388, was assigned on October 17, 2006. Dr. Vierling graduated from Stanford University School Of Medicine in 1972. Dr. Vierling's Texas license number on file is M8457.
- NPI
- 1043390388NPI Registry (opens in a new tab)
- NPI enumeration date
- October 17, 2006
- NPI status
- Active
- Practice phone
- (713) 798-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John M. Vierling's practice address is in Houston, Texas
Dr. Vierling's practice address in the NPI Registry is 2002 Holcombe Blvd, Houston, TX 77030, in Harris County. The practice phone is (713) 798-2500.
- NPI Registry address2002 Holcombe Blvd, Houston, TX 77030 · Harris CountyPhone(713) 798-2500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John M. Vierling's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vierling practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Vierling's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John M. Vierling is one of 1,341 gastroenterologists in Texas
Gastroenterology is Dr. Vierling's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Vierling is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Vierling's licenses on file in 3 states: Texas, California and Colorado.
Specialties and state licenses
- Gastroenterology, TexasPrimary
- California license
- Colorado license
Gastroenterologists near Dr. Vierling
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John M. Vierling billed Medicare for 35 services in 2017
CMS data shows 35 Medicare services from Dr. Vierling across 1 procedure code in 2017. Medicare paid $2,944 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Vierling's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 2332017: 3585%
Dr. Vierling compared with the Texas median for gastroenterologists, 2017
- Dr. Vierling
- Texas median
- Medicare services
- 35vs 50593% below
- Part D claims
- 16vs 49397% below
Medians across 1,281 gastroenterologists in Texas with Dmand AI profiles that report each measure.
Dr. Vierling's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Vierling and other gastroenterologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John M. Vierling's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Vierling's median patient age at 57, with 100% women.
Dr. Vierling's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. John M. Vierling wrote 16 Medicare Part D claims in 2020
In 2020, Dr. Vierling wrote 16 Medicare Part D claims. They cover 1 drug, with $14,961 in total drug cost. In 2019, CMS named 31 claims across 2 drugs.
Dr. Vierling's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 312020: 1648%
Drugs named by CMS: 1 in 2020, 2 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John M. Vierling has 172 publications on record
Dmand AI links 172 papers to Dr. Vierling, published from 2005 to 2024. 2020 was the busiest year, with 12. The most frequent topics are Liver Transplantation, Antiviral Agents and Hepacivirus. Dr. Vierling has published most often in Hepatology. Dr. Vierling's most frequent co-authors are Abbas A. Rana, MD, John A. Goss, MD and Christopher L. Bowlus, MD.
Dr. Vierling's papers by year, 2015 to 2024
Topics Dr. Vierling writes about most
- Liver Transplantation
- Antiviral Agents
- Hepacivirus
- Liver
- Liver Cirrhosis, Biliary
- Drug Therapy, Combination
- Hepatitis C, Chronic
- Ribavirin
Dr. Vierling's most frequent co-authors
- Abbas A. Rana, MD18 shared papers
- John A. Goss, MD16 shared papers
- Christopher L. Bowlus, MD13 shared papers
Recent publications by Dr. Vierling
See who Dr. Vierling researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Vierling works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John M. Vierling has worked on 7 clinical trials
Dmand AI links Dr. Vierling to 7 clinical trials, 5 of them phase 2 studies. Conditions studied include Hepatitis C, Liver Cirrhosis and Fibrosis. Meridian Bioscience, Inc. sponsors the most, 2.
Clinical trials with Dr. Vierling by phase
- NonePhase 1: no trials
- 5Phase 2: 5 trials
- 2Phase 3: 2 trials
- NonePhase 4: no trials
Conditions in Dr. Vierling's trials
- Hepatitis C
- Liver Cirrhosis
- Fibrosis
- Hepatitis, Autoimmune
- Hypertension, Portal
Investigators on the most trials with Dr. Vierling
- Manal F. Abdelmalek, MD1 shared trial
- Hays L. Arnold, MD1 shared trial
- Kalyan Ram Bhamidimarri, MD, MPH1 shared trial
Recent clinical trials with Dr. Vierling
Phase 2 Study to Evaluate LUM001 in Combination With Ursodeoxycholic Acid in Patients With Primary Biliary Cirrhosis (opens in a new tab)
Civacir® Polyclonal Immune Globulin (IgG) to Prevent Hepatitis C Virus (HCV) Recurrence in Liver Transplant Patients. (opens in a new tab)
Prediction of Severity of Liver Disease by a 13C Octanoate Breath Test (OBT) (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. John M. Vierling received $402,739 in industry payments from 2016 to 2025
CMS Open Payments shows 308 general payments to Dr. Vierling from 23 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 57% of the total. Gilead Sciences, Inc. paid the most, $166,441. It also lists 1 research payment totaling $7,197 in 2016.
General payments to Dr. Vierling by program year, 2016 to 2025
General payments to Dr. Vierling by kind, 2016 to 2025
- Consulting fees$230,09257%
- Speaker and faculty fees$89,00022%
- Travel and lodging$42,95611%
- Honoraria$28,3507%
- Other$12,3263%
Companies that paid Dr. Vierling the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John M. Vierling has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Vierling, most recently America's Top Doctors in 2023.
Awards and honors for Dr. Vierling
- 2023
- America's Top Doctors
- Who's Who in the World
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. John M. Vierling graduated from Stanford University School Of Medicine
Dr. Vierling graduated from Stanford University School Of Medicine in 1972. Dr. Vierling is a member of AOA, American Association for the Study of Liver Diseases, American Clinical and Climatological Association, ACP, AGA and American Liver Foundation.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John M. Vierling accepts plans from 17 insurance carriers
Dr. Vierling is in network with 17 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Cigna
- +9 more carriersWith a free account
Plan types Dr. Vierling accepts, by number of carriers
- HMO10
- PPO10
- Medicare6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. John M. Vierling's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John M. Vierling
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John M. Vierling's NPI number?
Dr. John M. Vierling's NPI number is 1043390388. It was assigned on October 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John M. Vierling?
Dr. John M. Vierling is a gastroenterologist in Houston, Texas. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John M. Vierling practice?
Dr. Vierling practices at 2002 Holcombe Blvd, Houston, TX 77030.
What is Dr. John M. Vierling's office phone number?
The practice phone on file for Dr. Vierling is (713) 798-2500.
What is Dr. John M. Vierling's medical license number?
Dr. Vierling's Texas license number on file is M8457, one of the licenses on file in 3 states.
Which states has Dr. John M. Vierling been licensed in?
Dmand AI has state licenses on file for Dr. Vierling in Texas (2007 to 2025), California (1975 to 2025) and Colorado (1979 to 1993).
Does Dr. John M. Vierling accept Medicare?
Yes. CMS data shows Dr. Vierling billed Medicare for 35 services in 2017.
Is Dr. John M. Vierling board certified?
Yes. Dr. Vierling is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. John M. Vierling bill to Medicare?
In 2017, Dr. Vierling's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. John M. Vierling go to medical school?
Dr. Vierling graduated from Stanford University School Of Medicine in 1972.
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What drugs does Dr. John M. Vierling prescribe most?
In 2020 Medicare Part D data, Dr. Vierling's most prescribed drugs by claims were Budesonide EC.
Has Dr. John M. Vierling received payments from drug or device companies?
CMS Open Payments shows $402,739 in general payments to Dr. Vierling from 23 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. John M. Vierling been practicing?
Dr. Vierling graduated from medical school in 1972, 54 years ago.
Does Dr. John M. Vierling do research?
Dmand AI links 172 publications to Dr. Vierling, published from 2005 to 2024. Dr. Vierling has worked on 7 clinical trials.
Who does Dr. John M. Vierling publish with?
Dr. Vierling's most frequent co-authors are Abbas A. Rana, MD (18 shared papers), John A. Goss, MD (16 shared papers) and Christopher L. Bowlus, MD (13 shared papers).
What insurance does Dr. John M. Vierling accept?
Dr. Vierling is in network with 17 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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