Mary Theoktisto, - Medicare Internal Medicine in Lakeway, TX

Mary Theoktisto, is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Lakeway, Texas. She graduated from medical school in 2015 and has 9 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Scott And White Clinic and her current practice location is 100 Medical Pkwy, Lakeway, Texas. You can reach out to her office (for appointments etc.) via phone at (512) 571-5000.

Mary Theoktisto is licensed to practice in Texas (license number S3323) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1619358934.

Contact Information

Mary Theoktisto,
100 Medical Pkwy,
Lakeway, TX 78738-5621
(512) 571-5000
Not Available

Map and Direction




Physician's Profile

Full NameMary Theoktisto
GenderFemale
SpecialityInternal Medicine
Experience9 Years
Location100 Medical Pkwy, Lakeway, Texas
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mary Theoktisto graduated from medical school in 2015
  NPI Data:
  • NPI Number: 1619358934
  • Provider Enumeration Date: 06/11/2015
  • Last Update Date: 08/20/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 9537593967
  • Enrollment ID: I20191218000921

Medical Identifiers

Medical identifiers for Mary Theoktisto such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1619358934NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease S3323 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Baylor Scott & White Medical Center - Round RockRound rock, TXHospital
Baylor Scott & White Pavilion - TempleTemple, TXHospital
Baylor Scott & White Medical Center - Marble FallsMarble falls, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Scott And White Clinic81239236042143

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. Mary Theoktisto allows following entities to bill medicare on her behalf.
Entity NameScott & White Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093779704
PECOS PAC ID: 8123923604
Enrollment ID: O20031223000640
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 NameHospitalist Medicine Physicians Of Texas - San Antonio Vi, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1225516719
PECOS PAC ID: 0143573162
Enrollment ID: O20181022001148

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. Mary Theoktisto 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
Mary Theoktisto,
Po Box 844658,
Dallas, TX 75284-4658

Ph: (254) 724-8800
Mary Theoktisto,
100 Medical Pkwy,
Lakeway, TX 78738-5621

Ph: (512) 571-5000

Reviews and Comments


Internal Medicine Doctors in Lakeway, TX

Dr. Seema Sidwani-chawla, D.O
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 200 Medical Pkwy Ste 110, Lakeway, TX 78738
Phone: 512-654-0150    Fax: 512-654-0155
Adrienne Gonzales, DO
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 100 Medical Pkwy, Lakeway, TX 78738
Phone: 512-509-0200    
Dr. Nandu Gourineni, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 200 Medical Pkwy Ste 110, Lakeway, TX 78738
Phone: 542-724-2111    Fax: 812-378-8267
Dr. Craig Tindall Kopecky, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 101 Medical Pkwy Ste 220, Lakeway, TX 78738
Phone: 512-814-1984    Fax: 855-270-9668
Dr. Karen Alexandra Acosta, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 100 Medical Pkwy, Lakeway, TX 78738
Phone: 512-571-5000    Fax: 512-571-5198
Shobha Dharam Reddy, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3108 Ranch Road 620 S, Lakeway, TX 78738
Phone: 512-654-4200    Fax: 512-654-4201
Praveen Koneru, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 100 Medical Pkwy, Lakeway, TX 78738
Phone: 512-571-5000    

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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