Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Ashwin Viswanathan, MD

Individual provider Neurological Surgery Physician · NPI 1699917047

Dr. Ashwin Viswanathan, MD practises Neurosurgery in Houston, Texas. Graduated from Baylor College of Medicine in 2003, 23 years ago. Practices with Baylor College of Medicine, a 1,218-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
23
Trained at
Baylor College of Medicine
Licensed in
TX
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1709 Dryden Rd Ste 750
Houston, TX 77030-2400
Phone: (713) 213-8181
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence M2856 (TX)

Record details

NPI number1699917047
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 1, 2009
Last updated in NPPESDecember 4, 2020
Certification dateDecember 4, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROSURGERY
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Baylor College Of Medicine — 1218 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients169
Services billed 340 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $12,375 6 payments
Consulting Fee $12,150 4 payments
Travel and Lodging $3,379 13 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $2,516 24 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Baylor College of Medicine

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1218 clinicians in the practice; 12 are shown here.

Other providers in Houston