Dr John David Mastrovich, MD - Medicare Allergy/immunology in San Antonio, TX

Dr John David Mastrovich, MD is a medicare enrolled "Allergy & Immunology" physician in San Antonio, Texas. He went to Texas Tech University Health Science Center School Of Medicine and graduated in 1996 and has 28 years of diverse experience with area of expertise as Allergy/immunology. His current practice location is 20650 Stone Oak Pkwy, Suite 106, San Antonio, Texas. You can reach out to his office (for appointments etc.) via phone at (210) 342-6200.

Dr John David Mastrovich is licensed to practice in Texas (license number L2449) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1740205418.

Contact Information

Dr John David Mastrovich, MD
20650 Stone Oak Pkwy, Suite 106,
San Antonio, TX 78258-7355
(210) 342-6200
(210) 342-6201

Map and Direction




Physician's Profile

Full NameDr John David Mastrovich
GenderMale
SpecialityAllergy/immunology
Experience28 Years
Location20650 Stone Oak Pkwy, San Antonio, Texas
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr John David Mastrovich attended and graduated from Texas Tech University Health Science Center School Of Medicine in 1996
  NPI Data:
  • NPI Number: 1740205418
  • Provider Enumeration Date: 07/13/2006
  • Last Update Date: 10/12/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 0446261390
  • Enrollment ID: I20060508000357

Medical Identifiers

Medical identifiers for Dr John David Mastrovich such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740205418NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207K00000XAllergy & Immunology L2449 (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. Dr John David Mastrovich allows following entities to bill medicare on his behalf.
Entity NameJohn Mastrovich, M.d., P.a.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538264213
PECOS PAC ID: 0143226688
Enrollment ID: O20061006000110

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. Dr John David Mastrovich 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
Dr John David Mastrovich, MD
20650 Stone Oak Pkwy, Suite 106,
San Antonio, TX 78258-7355

Ph: (210) 342-6200
Dr John David Mastrovich, MD
20650 Stone Oak Pkwy, Suite 106,
San Antonio, TX 78258-7355

Ph: (210) 342-6200

Reviews and Comments


Allergy & Immunology Doctors in San Antonio, TX

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Dr. Anna Henry Heisser, MD
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Kaitlyn Nicole Diaz, PA-C
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Practice Location: 2424 Babcock Rd Ste 301, San Antonio, TX 78229
Phone: 210-538-7678    

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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