Marija Sullivan, MD - Medicare Internal Medicine in Houston, TX

Marija Sullivan, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Houston, Texas. Her current practice location is 1515 Holcombe Blvd, Houston, Texas. You can reach out to her office (for appointments etc.) via phone at (713) 792-6161.

Marija Sullivan is licensed to practice in Texas (license number U4944) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1740725605.

Contact Information

Marija Sullivan, MD
1515 Holcombe Blvd,
Houston, TX 77030-4000
(713) 792-6161
Not Available

Map and Direction




Physician's Profile

Full NameMarija Sullivan
GenderFemale
SpecialityInternal Medicine - Critical Care Medicine
Location1515 Holcombe Blvd, Houston, Texas
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1740725605
  • Provider Enumeration Date: 01/03/2017
  • Last Update Date: 11/22/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2062840085
  • Enrollment ID: I20231206002711

Medical Identifiers

Medical identifiers for Marija Sullivan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740725605NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology BP10078596 (Texas)Secondary
390200000XStudent In An Organized Health Care Education/training Program V242585009027 (Maryland)Secondary
207RC0200XInternal Medicine - Critical Care Medicine U4944 (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. Marija Sullivan allows following entities to bill medicare on her behalf.
Entity NamePhysicians Referral Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073574810
PECOS PAC ID: 7911801410
Enrollment ID: O20031125000953

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. Marija Sullivan 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
Marija Sullivan, MD
Po Box 4439,
Houston, TX 77210-4439

Ph: (713) 792-2991
Marija Sullivan, MD
1515 Holcombe Blvd,
Houston, TX 77030-4000

Ph: (713) 792-6161

Reviews and Comments


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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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.