Ruth A Hahn, MD - Medicare Obstetrics/gynecology in Fairfield, CA

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Ruth A Hahn, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Fairfield, California. She went to George Washington University School Of Medicine and graduated in 2002 and has 22 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Snf Specialists Medical Corporation and her current practice location is 1255 Travis Blvd, Fairfield, California. You can reach out to her office (for appointments etc.) via phone at (510) 984-1103.

Ruth A Hahn is licensed to practice in California (license number A88964) 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 1528118262.

Contact Information

Ruth A Hahn, MD
1255 Travis Blvd,
Fairfield, CA 94533-4801
(510) 984-1103
Not Available

Map and Direction




Physician's Profile

Full NameRuth A Hahn
GenderFemale
SpecialityObstetrics/gynecology
Experience22 Years
Location1255 Travis Blvd, Fairfield, 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:
  • Ruth A Hahn attended and graduated from George Washington University School Of Medicine in 2002
  NPI Data:
  • NPI Number: 1528118262
  • Provider Enumeration Date: 01/12/2007
  • Last Update Date: 05/03/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5991845919
  • Enrollment ID: I20091222000443

Medical Identifiers

Medical identifiers for Ruth A Hahn such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528118262NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology A88964 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Sutter Lakeside HospitalLakeport, CAHospital
Rocky Point Care CenterLakeport, CANursing home
San Rafael Healthcare & Wellness Center, LpSan rafael, CANursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Snf Specialists Medical Corporation367884904916

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. Ruth A Hahn allows following entities to bill medicare on her behalf.
Entity NameObstetrix Medical Group Of California A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629175336
PECOS PAC ID: 0244120939
Enrollment ID: O20040317000435
Entity NameObhg California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215258892
PECOS PAC ID: 8729276795
Enrollment ID: O20101217000826
Entity NameDhp Of California Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679836084
PECOS PAC ID: 9234388745
Enrollment ID: O20120927000044
Entity NameSnf Specialists Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497265565
PECOS PAC ID: 3678849049
Enrollment ID: O20171030003464

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. Ruth A Hahn 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
Ruth A Hahn, MD
Po Box 127,
Napa, CA 94559-0127

Ph: (707) 255-3300		Ruth A Hahn, MD
1255 Travis Blvd,
Fairfield, CA 94533-4801

Ph: (510) 984-1103

Reviews and Comments


Obstetrics & Gynecology Doctors in Fairfield, CA

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Sangeeta Joshi, MD
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Dr. Frederick C Blair, M.D.
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Phone: 707-427-4900    Fax: 707-428-2790
Pantea Pahlavan, M.D.
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Practice Location: 1860 Pennsylvania Ave, Suite 300a, Fairfield, CA 94533
Phone: 707-438-7600    Fax: 707-429-8604

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.