Gregory Anstead, MD - Medicare Infectious Disease in San Antonio, TX

Gregory Anstead, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in San Antonio, Texas. He graduated from medical school in 1993 and has 31 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice University Of Texas Health Science Center At San Antonio and his current practice location is 4647 Medical Dr, San Antonio, Texas. You can reach out to his office (for appointments etc.) via phone at (210) 257-1400.

Gregory Anstead is licensed to practice in Texas (license number K9989) 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 1144337213.

Contact Information

Gregory Anstead, MD
4647 Medical Dr,
San Antonio, TX 78229-4403
(210) 257-1400
Not Available

Map and Direction




Physician's Profile

Full NameGregory Anstead
GenderMale
SpecialityInfectious Disease
Experience31 Years
Location4647 Medical Dr, San Antonio, 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:
  • Gregory Anstead graduated from medical school in 1993
  NPI Data:
  • NPI Number: 1144337213
  • Provider Enumeration Date: 08/24/2006
  • Last Update Date: 05/22/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 6305974411
  • Enrollment ID: I20100511000860

Medical Identifiers

Medical identifiers for Gregory Anstead such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144337213NPI-NPPES
045537001MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease K9989 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Health SystemSan antonio, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Texas Health Science Center At San Antonio00421285481057

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. Gregory Anstead allows following entities to bill medicare on his behalf.
Entity NameUniversity Of Texas Health Science Center At San Antonio
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720051717
PECOS PAC ID: 0042128548
Enrollment ID: O20040607000664

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. Gregory Anstead 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
Gregory Anstead, MD
Uthscsa, Uthscsa, Dept. Of Medicine, 7703 Floyd Curl Drive, Rm 5.069r,
San Antonio, TX 78229

Ph: (210) 592-0400
Gregory Anstead, MD
4647 Medical Dr,
San Antonio, TX 78229-4403

Ph: (210) 257-1400

Reviews and Comments


Internal Medicine Doctors in San Antonio, TX

Dr. Dennis Anthony Ruff, M.D.
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Phone: 210-798-5112    
Zarema J Singson, M.D.
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Phone: 210-614-1234    Fax: 210-614-0952
Sapna Raghunathan, MD
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Dr. Jonathan Edward Slovik, MD
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Practice Location: 4502 Medical Dr, San Antonio, TX 78229
Phone: 210-358-4000    Fax: 210-358-0647
Mr. Paul Joseph Fanucchi, NP
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Practice Location: Marianist Residence, 520 Fondham, San Antonio, TX 78228
Phone: 210-434-4157    Fax: 210-433-6005
Socrates B Aramburu, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 1100 Mccullough Ave, Suite 300, San Antonio, TX 78212
Phone: 210-271-3204    Fax: 210-222-2761
David H White, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 6800 Ih 10 W, Ste 350, San Antonio, TX 78201
Phone: 210-616-0801    

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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