Mark Nelson, MD

Addiction Medicine · Internal Medicine · Hospital Medicine · Cardiology · Dermatology · Gastroenterology · Pain Medicine · Ophthalmology · Rheumatology

21+ years in practiceNPI: 1538140090Licensed in TX

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineHospital MedicineCardiologyDermatologyGastroenterologyPain MedicineOphthalmologyRheumatology

NPI sub-specialties

Internal Medicine, Rheumatology207RR0500X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Google Reviews

4.0 / 5.0

12 reviews

Years in Practice

21+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#6

Top Rheumatologists in Texas, 2026

Rheumatology · Texas · 2026

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Frequently Asked Questions about Dr. Mark Nelson, MD

Where does Dr. Mark Nelson, MD practice?+
Dr. Mark Nelson, MD practices in New York, NY. 3338 OAKWELL COURT SUITE 114 SAN ANTONIO, TX 782183019.
What is Dr. Mark Nelson, MD's phone number?+
Dr. Mark Nelson, MD's practice phone is 210-656-5000. Office contact information is verified on the PBCMMG profile.
What does Dr. Mark Nelson, MD specialize in?+
Dr. Mark Nelson, MD's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Hospital Medicine, Cardiology.
Is Dr. Mark Nelson, MD board certified?+
Board certification status for Dr. Mark Nelson, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Mark Nelson, MD been practicing?+
Dr. Mark Nelson, MD has been in active practice for 21+ years, based on NPI enumeration and state licensing records.
What is Dr. Mark Nelson, MD's NPI number?+
Dr. Mark Nelson, MD's National Provider Identifier (NPI) is 1538140090, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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