MARK A. ISAEFF, MD PA
NPI 1891090221
Internal Medicine in San Antonio, TX

Q: What is Mark A. Isaeff, MD PA's NPI number?

The NPI number for Mark A. Isaeff, MD PA is 1891090221. It was assigned to this organization in the NPPES registry on January 16, 2011.

Q: What is Mark A. Isaeff, MD PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since January 16, 2011

1303 MCCULLOUGH AVE, 542, SAN ANTONIO, TX 78212(210) 572-4431(210) 572-4435 Get Directions Write a Review

NPPES record last updated: April 14, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Mark A. Isaeff, Md Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK A. ISAEFF, MD PA (NPI 1891090221) is a healthcare organization registered as an internal medicine in San Antonio, Texas and active in the NPI registry since January 2011. The organization lists Mark A Isaeff, President, as its authorized official.

NPPES Registry Identity

NPI1891090221

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameMARK A. ISAEFF, MD PA

Location Address1303 MCCULLOUGH AVE, 542San Antonio, TX 78212-5609

Mailing Address1303 Mccullough Ave, 542San Antonio, TX 78212-5609 · (210) 572-4431 · Fax (210) 572-4435

Phone(210) 572-4431

Fax(210) 572-4435

Organization SubpartNo

Authorized OfficialMark A IsaeffPresident · (210) 572-4431

Enumeration DateJanuary 16, 2011

Last NPPES UpdateApril 14, 2011

✔ NPI 1891090221 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1303 MCCULLOUGH AVE, San Antonio, TX 78212

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Other Identifiers 2

Medicaid218930001TX

Medicare PINTXB118188TX

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ROBERT JAY MAGNON M.D.

Dermatology

1303 MCCULLOUGH AVE, SUITE 525
SAN ANTONIO, TX 78212

Bexar County (210) 225-2769

DR. DANIEL A CALDERON M.D.

Obstetrics & Gynecology

1303 MCCULLOUGH AVE, SUITE GL70
SAN ANTONIO, TX 78212

Bexar County (210) 226-9705

PETER J WILLIAMS DPM

Podiatrist (Foot & Ankle Surgery)

1303 MCCULLOUGH AVE, SUITE 348
SAN ANTONIO, TX 78212

Bexar County (210) 227-4164

FIRST DIABETES SUPPLY, LLC

Durable Medical Equipment & Medical Supplies

1303 MCCULLOUGH AVE
SAN ANTONIO, TX 78212

Bexar County (512) 448-1255

MARK A ISAEFF M.D.

Internal Medicine

1303 MCCULLOUGH AVE, SUITE 542
SAN ANTONIO, TX 78212

Bexar County (210) 572-4431

ALAMO CITY CARDIOVASCULAR SURGEONS

Specialist

1303 MCCULLOUGH AVE, SUITE 270
SAN ANTONIO, TX 78212

Bexar County (210) 932-1487

ROLAND R. GARCIA D.D.S.

Dentist (General Practice)

1303 MCCULLOUGH AVE, SUITE 230
SAN ANTONIO, TX 78212

Bexar County (210) 226-9521

SAN ANTONIO INTERNAL MEDICINE PHYSICIANS, PLLC

Internal Medicine

1303 MCCULLOUGH AVE, SUITE #560
SAN ANTONIO, TX 78212

Bexar County (210) 223-9617

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark A. Isaeff, MD PA's NPI number?

The NPI number for Mark A. Isaeff, MD PA is 1891090221. It was assigned to this organization in the NPPES registry on January 16, 2011.

Where is Mark A. Isaeff, MD PA located?

Mark A. Isaeff, MD PA is located at 1303 Mccullough Ave 542, San Antonio, TX 78212. The listed phone number is (210) 572-4431.

What is Mark A. Isaeff, MD PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Mark A. Isaeff, MD PA was last updated on April 14, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.