Marek Walczak, MD - Medicare Internal Medicine in Plainview, TX

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Marek Walczak, MD is a medicare enrolled "Hospitalist" physician in Plainview, Texas. He graduated from medical school in 1988 and has 38 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Hospitalist Medicine Physicians Of Texas Pllc and his current practice location is 2601 Dimmitt Rd, Plainview, Texas. You can reach out to his office (for appointments etc.) via phone at (806) 296-5531.

Marek Walczak is licensed to practice in Texas (license number N0537) 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 1083840375.

Contact Information

Marek Walczak, MD
2601 Dimmitt Rd,
Plainview, TX 79072-1833
(806) 296-5531
Not Available

Map and Direction




Physician's Profile

Full NameMarek Walczak
GenderMale
SpecialityInternal Medicine
Experience38 Years
Location2601 Dimmitt Rd, Plainview, 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:
  • Marek Walczak graduated from medical school in 1988
  NPI Data:
  • NPI Number: 1083840375
  • Provider Enumeration Date: 06/01/2009
  • Last Update Date: 07/01/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 0547313926
  • Enrollment ID: I20090803000235

Medical Identifiers

Medical identifiers for Marek Walczak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1083840375NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist N0537 (Texas)Primary
207R00000XInternal Medicine N0537 (Texas)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Covenant Hospital PlainviewPlainview, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hospitalist Medicine Physicians Of Texas Pllc3476688318707

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. Marek Walczak allows following entities to bill medicare on his behalf.
Entity NameSt Joseph Regional Health Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669557179
PECOS PAC ID: 5294727921
Enrollment ID: O20040401000670
Entity NameMcallen Hospitalist Group Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356361976
PECOS PAC ID: 9830113836
Enrollment ID: O20060117001076
Entity NameCogent Healthcare Of Texas Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992722953
PECOS PAC ID: 8628076924
Enrollment ID: O20061121000364
Entity NameSound Inpatient Physicians Of Texas I, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831424563
PECOS PAC ID: 8729133640
Enrollment ID: O20090828000300
Entity NameHospitalist Medicine Physicians Of Texas Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629307095
PECOS PAC ID: 3476688318
Enrollment ID: O20100317001021
Entity NameHni Medical Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366735169
PECOS PAC ID: 6406028810
Enrollment ID: O20111031000750
Entity NameLonestar Hospital Medicine Associates Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518237429
PECOS PAC ID: 6709049703
Enrollment ID: O20120530000620
Entity NameIpc Healthcare Services Of Texas Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023403011
PECOS PAC ID: 3971824939
Enrollment ID: O20150603001409

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. Marek Walczak 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
Marek Walczak, MD
1781 Spyglass Dr, Apt 246,
Austin, TX 78746-6890

Ph: (203) 906-5389		Marek Walczak, MD
2601 Dimmitt Rd,
Plainview, TX 79072-1833

Ph: (806) 296-5531

Reviews and Comments


Hospitalist Doctors in Plainview, TX


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.