Mark A Isaeff, MD - Medicare Internal Medicine in San Antonio, TX

Mark A Isaeff, MD is a medicare enrolled "Internal Medicine" physician in San Antonio, Texas. He went to Georgetown University School Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 1303 Mccullough Ave, Suite 542, San Antonio, Texas. You can reach out to his office (for appointments etc.) via phone at (210) 572-4431.

Mark A Isaeff is licensed to practice in Texas (license number K8638) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1104815075.

Contact Information

Mark A Isaeff, MD
1303 Mccullough Ave, Suite 542,
San Antonio, TX 78212-5607
(210) 572-4431
(210) 572-4435

Map and Direction




Physician's Profile

Full NameMark A Isaeff
GenderMale
SpecialityInternal Medicine
Experience26 Years
Location1303 Mccullough Ave, San Antonio, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mark A Isaeff attended and graduated from Georgetown University School Of Medicine in 1998
  NPI Data:
  • NPI Number: 1104815075
  • Provider Enumeration Date: 10/13/2005
  • Last Update Date: 04/21/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 1951437805
  • Enrollment ID: I20100416000231

Medical Identifiers

Medical identifiers for Mark A Isaeff such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1104815075NPI-NPPES
110241471OtherTXRAILROAD MEDICARE
144897204MedicaidTX
144867202MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine K8638 (Texas)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mark A Isaeff allows following entities to bill medicare on his behalf.
Entity NameMark A. Isaeff, Md Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891090221
PECOS PAC ID: 9830370451
Enrollment ID: O20110301001132

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mark A Isaeff is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mark A Isaeff, MD
1303 Mccullough Ave, Suite 542,
San Antonio, TX 78212-5607

Ph: (210) 572-4431
Mark A Isaeff, MD
1303 Mccullough Ave, Suite 542,
San Antonio, TX 78212-5607

Ph: (210) 572-4431

Reviews and Comments


Internal Medicine Doctors in San Antonio, TX

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Socrates B Aramburu, MD
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David H White, M.D.
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Phone: 210-616-0801    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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