Grace Hassid, MD - Medicare Internal Medicine in San Mateo, CA

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Grace Hassid, MD is a medicare enrolled "Internal Medicine" physician in San Mateo, California. Her current practice location is 222 W 39th Ave, San Mateo, California. You can reach out to her office (for appointments etc.) via phone at (650) 573-2222.

Grace Hassid is licensed to practice in California (license number G62760) 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 1700957099.

Contact Information

Grace Hassid, MD
222 W 39th Ave,
San Mateo, CA 94403-4364
(650) 573-2222
Not Available

Map and Direction




Physician's Profile

Full NameGrace Hassid
GenderFemale
SpecialityInternal Medicine
Location222 W 39th Ave, San Mateo, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1700957099
  • Provider Enumeration Date: 11/10/2006
  • Last Update Date: 03/24/2009
  Medicare PECOS Information:
  • PECOS PAC ID: 7911810155
  • Enrollment ID: I20031222000483

Medical Identifiers

Medical identifiers for Grace Hassid such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1700957099NPI-NPPES
BI146ZOtherCAMEDICARE PTAN
00G627600MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G62760 (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. Grace Hassid allows following entities to bill medicare on her behalf.
Entity NameCounty Of San Mateo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679642326
PECOS PAC ID: 9032023171
Enrollment ID: O20031126000292
Entity NameCounty Of San Mateo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831268580
PECOS PAC ID: 9032023171
Enrollment ID: O20040123000822
Entity NameCounty Of San Mateo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306907928
PECOS PAC ID: 9032023171
Enrollment ID: O20040416001479

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. Grace Hassid 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
Grace Hassid, MD
222 W 39th Ave,
San Mateo, CA 94403-4364

Ph: (650) 573-2222		Grace Hassid, MD
222 W 39th Ave,
San Mateo, CA 94403-4364

Ph: (650) 573-2222

Reviews and Comments


Internal Medicine Doctors in San Mateo, CA

Kent Marc-josef Adler, M.D.
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Stanley Cheung-kit Hui, M.D.
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Lisa Gooze, MD
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Practice Location: 222 W 39th Ave, San Mateo, CA 94403
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Vivian Levy, MD
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Practice Location: 222 W 39th Ave, San Mateo, CA 94403
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Dr. Tina Au,
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Practice Location: 222 W 39th Ave, San Mateo, CA 94403
Phone: 650-573-3702    
Julian Hardy Mclain, MD
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Practice Location: 50 S San Mateo Dr, San Mateo, CA 94401
Phone: 650-696-5420    

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.