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JOHN M. VIERLING MD
NPI 1043390388
Internal Medicine - Gastroenterology in Houston, TX

Active since October 17, 2006PECOS Enrolled
91.34/100
CMS Quality Rating
6620 MAIN ST, HOUSTON, TX 77030(713) 798-2500(713) 798-2505 Get Directions Write a Review

NPPES record last updated: December 12, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About John M. Vierling Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN M. VIERLING MD (NPI 1043390388) is an individual gastroenterology provider in Houston, Texas, licensed in Texas (M8457) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1043390388
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJOHN M. VIERLINGCredential: MD
Location Address6620 MAIN STHouston, TX 77030-2348
Mailing Address2 Greenway Plz, Suite 900Houston, TX 77046-0297 · (713) 798-1750 · Fax (713) 798-1144
Phone(713) 798-2500
Fax(713) 798-2505
Sole ProprietorNo
Enumeration DateOctober 17, 2006
Last NPPES UpdateDecember 12, 2023
NPPES CertifiedDecember 12, 2023
✔ NPI 1043390388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in TX · M8457
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License M8457 (TX)
6620 MAIN ST, Houston, TX 77030
Open in Google Maps ↗

Other Identifiers 3

Medicaid175369101TX
Other175369102TX · Cshcn
Medicaid175369103TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Community Health Choice.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John M. Vierling Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.34/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality81.64
Promoting Interoperability89.13
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SRIKANTH KONERU M.D., CARDIOLOGY
Internal Medicine (Cardiovascular Disease)
6620 MAIN ST
HOUSTON, TX 77030
Harris County (713) 798-1000
BAYLOR COLLEGE OF MEDICINE
Orthopaedic Surgery
6620 MAIN ST, SUITE 1325
HOUSTON, TX 77030
Harris County (713) 986-6024
GUILHERME GODOY MD
Urology
6620 MAIN ST, SUITE 1325, MS BCM380
HOUSTON, TX 77030
Harris County (713) 798-5628
JOHN FARMER MD
Internal Medicine (Cardiovascular Disease)
6620 MAIN ST
HOUSTON, TX 77030
Harris County (713) 798-2545
KJERSTI MARIE AAGAARD-TILLERY MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
6620 MAIN ST, SUITE 1450
HOUSTON, TX 77030
Harris County (713) 798-7500
DR. RONALD TIMOTHY COTTON MD
Transplant Surgery
6620 MAIN ST, SUITE 1450
HOUSTON, TX 77030
Harris County (832) 355-1400
DR. MARCUS K HOFFMAN MD
Surgery (Surgical Critical Care)
6620 MAIN ST, SUITE 1350
HOUSTON, TX 77030
Harris County (713) 798-2262
SHAWN SPENCER GROTH M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
6620 MAIN ST, BAYLOR CLINIC 1325
HOUSTON, TX 77030
Harris County (713) 798-6376

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Vierling's NPI number?

The NPI number for John Vierling is 1043390388. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is John Vierling located?

John Vierling practices at 6620 Main St, Houston, TX 77030. The listed phone number is (713) 798-2500.

What is John Vierling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is John Vierling enrolled in Medicare?

Yes. John Vierling is registered in the Medicare PECOS enrollment system.

What insurance does John Vierling accept?

Health plans from Blue Cross and Blue Shield of Texas and Community Health Choice list John Vierling as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Vierling was last updated on December 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.