Dr Timothy Ian Mackenzie Mercer, MD - Medicare Internal Medicine in Austin, TX

Dr Timothy Ian Mackenzie Mercer, MD is a medicare enrolled "Internal Medicine" physician in Austin, Texas. He went to Indiana University School Of Medicine and graduated in 2011 and has 13 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Seton Family Of Doctors and his current practice location is 500 E 7th St, Austin, Texas. You can reach out to his office (for appointments etc.) via phone at (512) 978-9920.

Dr Timothy Ian Mackenzie Mercer is licensed to practice in Texas (license number R4099) 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 1215337092.

Contact Information

Dr Timothy Ian Mackenzie Mercer, MD
500 E 7th St,
Austin, TX 78701-3319
(512) 978-9920
(512) 901-9762

Map and Direction




Physician's Profile

Full NameDr Timothy Ian Mackenzie Mercer
GenderMale
SpecialityInternal Medicine
Experience13 Years
Location500 E 7th St, Austin, 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:
  • Dr Timothy Ian Mackenzie Mercer attended and graduated from Indiana University School Of Medicine in 2011
  NPI Data:
  • NPI Number: 1215337092
  • Provider Enumeration Date: 08/28/2014
  • Last Update Date: 09/15/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 9931473220
  • Enrollment ID: I20210510000665

Medical Identifiers

Medical identifiers for Dr Timothy Ian Mackenzie Mercer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215337092NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics R4099 (Texas)Secondary
207R00000XInternal Medicine R4099 (Texas)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Seton Family Of Doctors0941333280666

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 Timothy Ian Mackenzie Mercer allows following entities to bill medicare on his behalf.
Entity NameSeton Family Of Doctors
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588997233
PECOS PAC ID: 0941333280
Enrollment ID: O20100806000260

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 Timothy Ian Mackenzie Mercer 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 Timothy Ian Mackenzie Mercer, MD
500 E 7th St,
Austin, TX 78701-3319

Ph: () -
Dr Timothy Ian Mackenzie Mercer, MD
500 E 7th St,
Austin, TX 78701-3319

Ph: (512) 978-9920

Reviews and Comments


Internal Medicine Doctors in Austin, TX

Dr. Tatiana B. Jacobson, M.D.
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Phone: 512-323-5465    Fax: 512-327-1390
Preeti Venkatraman, M.B.B.S.
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Practice Location: 601 E 15th St, Austin, TX 78701
Phone: 512-324-7000    
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Dr. Joshua Lane Davis, D.O.
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Practice Location: 1004 W 32nd St Unit 300, Austin, TX 78705
Phone: 512-324-3440    
Dr. Grace Marie Grant-jennings, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 7000 North Mopac, Suite # 420, Austin, TX 78731
Phone: 512-482-0045    Fax: 512-476-9892
Dr. Debra Ann Patt, MD, MPH
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 6204 Balcones Dr, Austin, TX 78731
Phone: 512-427-9400    Fax: 512-342-2723
Dr. Matthew Morris Medlock, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 6233 Carrington Dr, Austin, TX 78749
Phone: 512-293-0247    

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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