Pam Grewall, MD - Medicare Internal Medicine in San Francisco, CA

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Pam Grewall, MD is a medicare enrolled "Hospitalist" physician in San Francisco, California. She went to New York College Of Osteo Medicine Of New York Institute Of Technology and graduated in 2000 and has 24 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Hospitalist Medicine Physicians Of California Inc and her current practice location is 2340 Clay St, 2nd Floor, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 600-3458.

Pam Grewall is licensed to practice in California (license number A78443) 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 1578580445.

Contact Information

Pam Grewall, MD
2340 Clay St, 2nd Floor,
San Francisco, CA 94115-1932
(415) 600-3458
(415) 600-3451

Map and Direction




Physician's Profile

Full NamePam Grewall
GenderFemale
SpecialityInternal Medicine
Experience24 Years
Location2340 Clay St, San Francisco, 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:
  • Pam Grewall attended and graduated from New York College Of Osteo Medicine Of New York Institute Of Technology in 2000
  NPI Data:
  • NPI Number: 1578580445
  • Provider Enumeration Date: 07/16/2006
  • Last Update Date: 05/07/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 9335188820
  • Enrollment ID: I20050425000888

Medical Identifiers

Medical identifiers for Pam Grewall such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578580445NPI-NPPES
00A784430MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A78443 (California)Secondary
208M00000XHospitalist A78443 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Washington HospitalFremont, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hospitalist Medicine Physicians Of California Inc8426062027165

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. Pam Grewall allows following entities to bill medicare on her behalf.
Entity NameHospitalist Medicine Physicians Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184663965
PECOS PAC ID: 8426062027
Enrollment ID: O20060202000956
Entity NameInpatient Specialists Of California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952792475
PECOS PAC ID: 3476864448
Enrollment ID: O20150617000915
Entity NameHospitalist Medicine Physicians Of California - Salinas
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699253211
PECOS PAC ID: 4486905668
Enrollment ID: O20180927000876
Entity NameHospitalist Medicine Physicians Of California-tcg Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952880437
PECOS PAC ID: 4880938679
Enrollment ID: O20181205001780

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. Pam Grewall 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
Pam Grewall, MD
2350 W El Camino Real Fl 2,
Mountain View, CA 94040-6203

Ph: (415) 600-3458		Pam Grewall, MD
2340 Clay St, 2nd Floor,
San Francisco, CA 94115-1932

Ph: (415) 600-3458

Reviews and Comments


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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.