Dr Karen L Hasty, MD - Medicare Obstetrics/gynecology in San Antonio, TX

  1. Home
  2. Obstetrics & Gynecology
  3. TX
  4. San Antonio
Dr Karen L Hasty, MD is a medicare enrolled "Obstetrics & Gynecology" physician in San Antonio, Texas. She graduated from medical school in 1997 and has 29 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Four Seasons Ob/gyn, M.d., P.a. and her current practice location is 8435 Wurzbach Rd Ste 101, San Antonio, Texas. You can reach out to her office (for appointments etc.) via phone at (210) 593-0700.

Dr Karen L Hasty is licensed to practice in Texas (license number K5550) 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 1053378596.

Contact Information

Dr Karen L Hasty, MD
8435 Wurzbach Rd Ste 101,
San Antonio, TX 78229-3733
(210) 593-0700
(210) 593-0702

Map and Direction




Physician's Profile

Full NameDr Karen L Hasty
GenderFemale
SpecialityObstetrics/gynecology
Experience29 Years
Location8435 Wurzbach Rd Ste 101, San Antonio, 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:
  • Dr Karen L Hasty graduated from medical school in 1997
  NPI Data:
  • NPI Number: 1053378596
  • Provider Enumeration Date: 04/27/2006
  • Last Update Date: 09/09/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 3577757061
  • Enrollment ID: I20120208000464

Medical Identifiers

Medical identifiers for Dr Karen L Hasty such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1053378596NPI-NPPES
14338490MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology K5550 (Texas)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Four Seasons Ob/gyn, M.d., P.a.14565450292

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 Karen L Hasty allows following entities to bill medicare on her behalf.
Entity NameLone Star Ob/gyn Associates, P.a.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063441921
PECOS PAC ID: 5294720132
Enrollment ID: O20040419001336
Entity NameFour Seasons Ob/gyn, M.d., P.a.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316127111
PECOS PAC ID: 1456545029
Enrollment ID: O20101028000532
Entity NameObhg Texas Holdings Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083917769
PECOS PAC ID: 3577713072
Enrollment ID: O20121018000279
Entity NamePremier Ob-gyn Of Texas Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1225807530
PECOS PAC ID: 4284077900
Enrollment ID: O20240209002545

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 Karen L Hasty 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 Karen L Hasty, MD
8435 Wurzbach Rd Ste 101,
San Antonio, TX 78229-3733

Ph: (210) 593-0700		Dr Karen L Hasty, MD
8435 Wurzbach Rd Ste 101,
San Antonio, TX 78229-3733

Ph: (210) 593-0700

Reviews and Comments


Obstetrics & Gynecology Doctors in San Antonio, TX

Stephanie Schaefer, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 525 Oak Centre Dr Ste 300, San Antonio, TX 78258
Phone: 210-402-6022    
James Paine, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 7703 Floyd Curl Dr, San Antonio, TX 78229
Phone: 210-257-1400    Fax: 210-257-1428
Dr. Lynn Tavares Parente, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 502 Madison Oak Dr Ste 240, San Antonio, TX 78258
Phone: 210-495-1900    Fax: 210-650-5975
Dr. Antonio Santillan-gomez, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 4411 Medical Dr, Ste. 100, San Antonio, TX 78229
Phone: 210-595-5300    Fax: 210-595-5301
Dr. Rorey Marie Walsh, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 4502 Medical Dr, San Antonio, TX 78229
Phone: 210-616-8100    
Dr. Charles A Holshouser Jr., M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 4499 Medical Dr #183, San Antonio, TX 78229
Phone: 210-692-5200    Fax: 210-692-7725
Patrick Lane Williamson, MD
Obstetrics & Gynecology
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).

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.