Dr Diana Villazana-kretzer, DO - Medicare Obstetrics & Gynecology in San Antonio, TX

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Dr Diana Villazana-kretzer, DO is a medicare enrolled "Obstetrics & Gynecology - Maternal & Fetal Medicine" physician in San Antonio, Texas. Her current practice location is 333 N Santa Rosa, San Antonio, Texas. You can reach out to her office (for appointments etc.) via phone at (713) 798-1750.

Dr Diana Villazana-kretzer is licensed to practice in Texas (license number N9661) 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 1578791190.

Contact Information

Dr Diana Villazana-kretzer, DO
333 N Santa Rosa,
San Antonio, TX 78207-3108
(713) 798-1750
(713) 798-4693

Map and Direction




Physician's Profile

Full NameDr Diana Villazana-kretzer
GenderFemale
SpecialityObstetrics & Gynecology - Maternal & Fetal Medicine
Location333 N Santa Rosa, San Antonio, Texas
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1578791190
  • Provider Enumeration Date: 06/23/2009
  • Last Update Date: 03/28/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0143655837
  • Enrollment ID: I20200128000756

Medical Identifiers

Medical identifiers for Dr Diana Villazana-kretzer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578791190NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VM0101XObstetrics & Gynecology - Maternal & Fetal Medicine N9661 (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. Dr Diana Villazana-kretzer allows following entities to bill medicare on her behalf.
Entity NameBillings Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326104845
PECOS PAC ID: 6002993516
Enrollment ID: O20080430000212

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 Diana Villazana-kretzer 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 Diana Villazana-kretzer, DO
333 N Santa Rosa,
San Antonio, TX 78207-3108

Ph: (713) 798-1750		Dr Diana Villazana-kretzer, DO
333 N Santa Rosa,
San Antonio, TX 78207-3108

Ph: (713) 798-1750

Reviews and Comments


Obstetrics & Gynecology Doctors in San Antonio, TX

Stephanie Schaefer, M.D.
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Dr. Lynn Tavares Parente, M.D.
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Phone: 210-495-1900    Fax: 210-650-5975
Dr. Antonio Santillan-gomez, M.D.
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Dr. Rorey Marie Walsh, M.D.
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Practice Location: 4502 Medical Dr, San Antonio, TX 78229
Phone: 210-616-8100    
Dr. Charles A Holshouser Jr., M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 4499 Medical Dr #183, San Antonio, TX 78229
Phone: 210-692-5200    Fax: 210-692-7725
Patrick Lane Williamson, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 7950 Floyd Curl Drive, Suite 300, San Antonio, TX 78229
Phone: 210-615-6505    Fax: 210-615-1321

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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