Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

David A Marks MD PA

Q: What type of organization is David A Marks MD PA?

David A Marks MD PA is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

Pulmonary Disease Physician in San Antonio, TX · enumerated 2007 · authorized official David Marks, Owner/Physician.

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

National Provider Identifier

1780883793

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Registry record

Entity type Organization (Type 2)

Legal business name David A Marks MD PA

Practice address 115 Gallery Cir, 102, San Antonio, TX, 78258

Phone (210) 494-4220

Fax (210) 494-4227

Enumeration date Jul 11, 2007

Last updated in NPPES May 14, 2026

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary

207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Primary

207RS0010X Sports Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License L6513 (TX) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name David Marks

Title Owner/Physician

Phone (210) 424-4220

Other identifiers

Identifier	Type	State	Issuer
0097RB	Other	TX	BCBS GROUP

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is David A Marks MD PA?

David A Marks MD PA is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Michael Vaughn Allergy & Immunology Physician · San Antonio, TX NPI 1881687879 Stone Oak Mri, Ltd Magnetic Resonance Imaging (MRI) Clinic/Center · San Antonio, TX NPI 1417987280 David Marks Pulmonary Disease Physician · San Antonio, TX NPI 1821016023 Carlos Orozco Physical Therapist · San Antonio, TX NPI 1598886350 Pulmonary & Sleep Institute Medical Specialty Clinic/Center · San Antonio, TX NPI 1841695293 South Texas Spine & Surgical Hospital Lp Diagnostic Radiology Physician · San Antonio, TX NPI 1467843581

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