Estrelania S Williams, MD - Medicare Obstetrics/gynecology in Santa Rosa, CA

Estrelania S Williams, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Santa Rosa, California. She went to Icahn School Of Medicine At Mount Sinai and graduated in 2015 and has 9 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Adventist Health Clearlake Hospital Inc. and her current practice location is 500 Doyle Park Dr Ste 103, Santa Rosa, California. You can reach out to her office (for appointments etc.) via phone at (707) 579-1102.

Estrelania S Williams is licensed to practice in California (license number A165780) 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 1164816252.

Contact Information

Estrelania S Williams, MD
500 Doyle Park Dr Ste 103,
Santa Rosa, CA 95405-4559
(707) 579-1102
(707) 579-1386

Map and Direction




Physician's Profile

Full NameEstrelania S Williams
GenderFemale
SpecialityObstetrics/gynecology
Experience9 Years
Location500 Doyle Park Dr Ste 103, Santa Rosa, California
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:
  • Estrelania S Williams attended and graduated from Icahn School Of Medicine At Mount Sinai in 2015
  NPI Data:
  • NPI Number: 1164816252
  • Provider Enumeration Date: 03/26/2015
  • Last Update Date: 10/16/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 2365874302
  • Enrollment ID: I20191113002828

Medical Identifiers

Medical identifiers for Estrelania S Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164816252NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology A165780 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventist Health ClearlakeClearlake, CAHospital
Adventist Health Ukiah ValleyUkiah, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Adventist Health Clearlake Hospital Inc.307242119781

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. Estrelania S Williams allows following entities to bill medicare on her behalf.
Entity NameAdventist Health Clearlake Hospital Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124018031
PECOS PAC ID: 3072421197
Enrollment ID: O20041112000573
Entity NameAdventist Health Physicians Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063718583
PECOS PAC ID: 3274580972
Enrollment ID: O20050407000633

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. Estrelania S Williams 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
Estrelania S Williams, MD
500 Doyle Park Dr, Ste 103,
Santa Rosa, CA 95405-4559

Ph: (707) 579-1102
Estrelania S Williams, MD
500 Doyle Park Dr Ste 103,
Santa Rosa, CA 95405-4559

Ph: (707) 579-1102

Reviews and Comments


Obstetrics & Gynecology Doctors in Santa Rosa, CA

Dr. Jennifer V Ratcliffe, M.D., PH.D
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Medicare: Not Enrolled in Medicare
Practice Location: 4690 Hoen Ave, Santa Rosa, CA 95405
Phone: 707-575-5831    Fax: 707-575-4379
Dr. Shazah Khawaja, M.D
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 900 Sonoma Ave Ste 18, Santa Rosa, CA 95404
Phone: 707-579-1102    Fax: 707-579-1386
Dr. Jonathan Michael Kurss, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 401 Bicentennial Way, Medical Office Building 1, Suite 210, Santa Rosa, CA 95403
Phone: 707-393-4081    
Louise Huang, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 500 Doyle Park Dr, #103, Santa Rosa, CA 95405
Phone: 707-579-1102    Fax: 707-579-1386
John C. Parker, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 401 Bicentennial Way, Santa Rosa, CA 95403
Phone: 707-571-4000    
Sarah Alexis Paul Padua, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 34 Mark West Springs Rd Fl 2, Santa Rosa, CA 95403
Phone: 707-541-7902    Fax: 707-573-5413

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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