Dr. Andrew Thomas Sullivan , MD
General Practice β’ Houston, TX
6431 Fannin Street, Msb 1.134
Houston, TX 77030
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
6431 Fannin Street, Msb 1.134
Houston, TX 77030
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $101.02 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
NPI first issued
2023
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Can order Medicare-covered services
CMS lists Dr. Sullivan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Houston and Texas
133 active clinicians are listed under General Practice with a practice address in Houston, TX (1,066 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Houston
6.8% of these 133 clinicians have the CMS telehealth indicator.
30.1% of these 133 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2025 only.
Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $101.02.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
Epclusa | General | $101.02 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-07-08NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Internal Medicine
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Medicine (M.D.)
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
General Practice (license number reported to NPPES: TX W3054)
Internal Medicine (license number reported to NPPES: TX W3054)
NPI status registered as active in NPPES database
Registered at 6431 FANNIN STREET, MSB 1.134, HOUSTON, TX 77030 (Tel: 7135006526)
Registered at 6431 FANNIN STREET, MSB 1.134, HOUSTON, TX 77030 (Tel: 7135006526)
Recorded as ANDREW SULLIVAN, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other General Practices in Houston
- Dr. Jeanne Southern, MD
- Dr. Winifred King, MD
- Dr. Arlette Pharo, DO
- Dr. Michael Hoffmann, MD
- Dr. Helen Shpats, MD
- Zubeida Charania
Mailing Address
6431 Fannin Street, Msb 1.134
Houston, TX 77030
Phone: 7135006700