Gregory Neill Sacher, MD - Medicare Obstetrics/gynecology in Santa Rosa, CA

  1. Home
  2. Obstetrics & Gynecology
  3. CA
  4. Santa Rosa
Gregory Neill Sacher, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Santa Rosa, California. He went to Georgetown University School Of Medicine and graduated in 1997 and has 28 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Obhg California Pc, Obhg Oregon Pc and his current practice location is 500 Doyle Park Dr, Suite 200, Santa Rosa, California. You can reach out to his office (for appointments etc.) via phone at (707) 303-1719.

Gregory Neill Sacher is licensed to practice in California (license number A68058) 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 1972682011.

Contact Information

Gregory Neill Sacher, MD
500 Doyle Park Dr, Suite 200,
Santa Rosa, CA 95405-4558
(707) 303-1719
(707) 387-3696

Map and Direction




Physician's Profile

Full NameGregory Neill Sacher
GenderMale
SpecialityObstetrics/gynecology
Experience28 Years
Location500 Doyle Park Dr, Santa Rosa, California
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 Neill Sacher attended and graduated from Georgetown University School Of Medicine in 1997
  NPI Data:
  • NPI Number: 1972682011
  • Provider Enumeration Date: 11/02/2006
  • Last Update Date: 03/19/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 1052507969
  • Enrollment ID: I20101117001588

Medical Identifiers

Medical identifiers for Gregory Neill Sacher such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972682011NPI-NPPES
1972682011MedicaidSD
00A680580MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 16766 (South Dakota)Secondary
207V00000XObstetrics & Gynecology A68058 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Obhg California Pc872927679562
Obhg Oregon Pc23657763904

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 Neill Sacher allows following entities to bill medicare on his behalf.
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346
Entity NameSutter Valley Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669846986
PECOS PAC ID: 9830094515
Enrollment ID: O20090311000335
Entity NameObhg California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215258892
PECOS PAC ID: 8729276795
Enrollment ID: O20101217000826
Entity NameConfermed Of California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316584709
PECOS PAC ID: 3072995679
Enrollment ID: O20220728002946

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 Neill Sacher 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 Neill Sacher, MD
500 Doyle Park Dr, Suite 200,
Santa Rosa, CA 95405-4558

Ph: (707) 303-1719		Gregory Neill Sacher, MD
500 Doyle Park Dr, Suite 200,
Santa Rosa, CA 95405-4558

Ph: (707) 303-1719

Reviews and Comments


Obstetrics & Gynecology Doctors in Santa Rosa, CA

Dr. Jennifer V Ratcliffe, M.D., PH.D
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 4690 Hoen Ave, Santa Rosa, CA 95405
Phone: 707-575-5831    Fax: 707-575-4379
Shazah Khawaja, MD
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    
Estrelania S Williams, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 500 Doyle Park Dr Ste 103, Santa Rosa, CA 95405
Phone: 707-579-1102    Fax: 707-579-1386
Kathryn Marie Osei-bonsu,
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 34 Mark West Springs Rd, Santa Rosa, CA 95403
Phone: 707-541-7900    Fax: 707-573-5413
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    

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.