Dr Sonia Ralli Grewal, MD - Medicare Endocrinology in Newport Beach, CA

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Dr Sonia Ralli Grewal, MD is a medicare enrolled "Internal Medicine" physician in Newport Beach, California. She graduated from medical school in 2004 and has 20 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice Naqvi And Naqvi, M.d.'s Inc and her current practice location is 351 Hospital Rd Ste 415, Newport Beach, California. You can reach out to her office (for appointments etc.) via phone at (949) 548-3177.

Dr Sonia Ralli Grewal is licensed to practice in California (license number A95350) 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 1154512663.

Contact Information

Dr Sonia Ralli Grewal, MD
351 Hospital Rd Ste 415,
Newport Beach, CA 92663-3507
(949) 548-3177
(949) 548-3412

Map and Direction




Physician's Profile

Full NameDr Sonia Ralli Grewal
GenderFemale
SpecialityEndocrinology
Experience20 Years
Location351 Hospital Rd Ste 415, Newport Beach, 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:
  • Dr Sonia Ralli Grewal graduated from medical school in 2004
  NPI Data:
  • NPI Number: 1154512663
  • Provider Enumeration Date: 08/08/2007
  • Last Update Date: 07/27/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 4486735198
  • Enrollment ID: I20080121000039

Medical Identifiers

Medical identifiers for Dr Sonia Ralli Grewal such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154512663NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A95350 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Naqvi And Naqvi, M.d.'s Inc76180141193

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. Dr Sonia Ralli Grewal allows following entities to bill medicare on her behalf.
Entity NameNaqvi And Naqvi, M.d.'s Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740424118
PECOS PAC ID: 7618014119
Enrollment ID: O20091031000060

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. Dr Sonia Ralli Grewal 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
Dr Sonia Ralli Grewal, MD
351 Hospital Rd Ste 415,
Newport Beach, CA 92663-3507

Ph: (949) 548-3177		Dr Sonia Ralli Grewal, MD
351 Hospital Rd Ste 415,
Newport Beach, CA 92663-3507

Ph: (949) 548-3177

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.