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Dr. David A Marks, M.D.

Pulmonary Disease Physician in San Antonio, TX · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821016023

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Registry record

Entity type Individual (Type 1)
Name Dr. David A Marks
Credential M.D.
Sex Male
Practice address 115 Gallery Cir, 102, San Antonio, TX, 78258
Phone (210) 494-4220
Fax (210) 494-4227
Enumeration date Jul 17, 2006
Last updated in NPPES May 14, 2026

Taxonomy & licenses

207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary
207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Primary
207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is David Marks?
David Marks is registered in NPPES with the primary taxonomy of Pulmonary Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-14.