Arianna Gimian Cassidy, MD - Medicare Obstetrics & Gynecology in San Francisco, CA

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Arianna Gimian Cassidy, MD is a medicare enrolled "Obstetrics & Gynecology" physician in San Francisco, California. Her current practice location is 1001 Potrero Ave # 6d, Sfgh Ob Gyn, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 206-4069.

Arianna Gimian Cassidy is licensed to practice in California (license number 152059) 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 1902268923.

Contact Information

Arianna Gimian Cassidy, MD
1001 Potrero Ave # 6d, Sfgh Ob Gyn,
San Francisco, CA 94110-3518
(415) 206-4069
Not Available

Map and Direction




Physician's Profile

Full NameArianna Gimian Cassidy
GenderFemale
SpecialityObstetrics & Gynecology
Location1001 Potrero Ave # 6d, San Francisco, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1902268923
  • Provider Enumeration Date: 03/28/2016
  • Last Update Date: 09/08/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2961818604
  • Enrollment ID: I20210304001064

Medical Identifiers

Medical identifiers for Arianna Gimian Cassidy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902268923NPI-NPPES
A152059OtherCASTATE MEDICAL LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 152059 (California)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. Arianna Gimian Cassidy allows following entities to bill medicare on her behalf.
Entity NameAlameda Health System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740332931
PECOS PAC ID: 3779494521
Enrollment ID: O20031110000764
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366417420
PECOS PAC ID: 5496668410
Enrollment ID: O20031112000551
Entity NameUniversity Of California San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861578973
PECOS PAC ID: 4486567229
Enrollment ID: O20031212000897
Entity NameUcsf Medical Group Business Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477624104
PECOS PAC ID: 3779497870
Enrollment ID: O20040622001513
Entity NameCity & County Of San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982737524
PECOS PAC ID: 1658280748
Enrollment ID: O20050309000770

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. Arianna Gimian Cassidy 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
Arianna Gimian Cassidy, MD
325 Distel Cir,
Los Altos, CA 94022-1408

Ph: (510) 204-3977		Arianna Gimian Cassidy, MD
1001 Potrero Ave # 6d, Sfgh Ob Gyn,
San Francisco, CA 94110-3518

Ph: (415) 206-4069

Reviews and Comments


Obstetrics & Gynecology Doctors in San Francisco, CA

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Yamilee Odile Bermingham, M.D.
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Dr. A. Eugene Washington, M.D.
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Practice Location: 2356 Sutter St, San Francisco, CA 94115
Phone: 415-885-7788    Fax: 415-476-0816

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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