Isabel J Pereira, MD - Medicare Internal Medicine in Carlsbad, CA

Isabel J Pereira, MD is a medicare enrolled "Internal Medicine - Geriatric Medicine" physician in Carlsbad, California. Her current practice location is 3140 El Camino Real, Carlsbad, California. You can reach out to her office (for appointments etc.) via phone at (760) 720-9898.

Isabel J Pereira is licensed to practice in California (license number A60731) 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 1295838803.

Contact Information

Isabel J Pereira, MD
3140 El Camino Real,
Carlsbad, CA 92008
(760) 720-9898
Not Available

Map and Direction




Physician's Profile

Full NameIsabel J Pereira
GenderFemale
SpecialityInternal Medicine - Geriatric Medicine
Location3140 El Camino Real, Carlsbad, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1295838803
  • Provider Enumeration Date: 09/07/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 9032166228
  • Enrollment ID: I20050330001262

Medical Identifiers

Medical identifiers for Isabel J Pereira such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1295838803NPI-NPPES
00A607310MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0300XInternal Medicine - Geriatric Medicine A60731 (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. Isabel J Pereira allows following entities to bill medicare on her behalf.
Entity NameSharp Rees-stealy Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285616177
PECOS PAC ID: 8628972759
Enrollment ID: O20031120000996

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. Isabel J Pereira 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
Isabel J Pereira, MD
Po Box 2428,
San Marcos, CA 92079-2428

Ph: (619) 261-6828
Isabel J Pereira, MD
3140 El Camino Real,
Carlsbad, CA 92008

Ph: (760) 720-9898

Reviews and Comments


Internal Medicine Doctors in Carlsbad, CA

Mrs. Jazel Ruivivar Sambo, NP
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2510 El Camino Real, Carlsbad, CA 92008
Phone: 760-729-8941    
Dr. Ronald Hansel Main, M.D.
Geriatric Medicine
Medicare: Medicare Enrolled
Practice Location: 2604b El Camino Real Ste 275, Carlsbad, CA 92008
Phone: 442-888-4176    
Stuart Rollin Weiss, M.D.
Geriatric Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 7189 Aviara Dr, Carlsbad, CA 92011
Phone: 760-918-1683    Fax: 760-804-3907
Stacie Hien Ly, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2176 Salk Ave, Carlsbad, CA 92008
Phone: 760-827-7200    
Andrew J Hall, M.D.
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2562 State St, Suite D, Carlsbad, CA 92008
Phone: 760-729-7186    Fax: 760-729-2753
Zachary Thomas Fellows, M.D.
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 6120 Paseo Del Norte Ste C1, Carlsbad, CA 92011
Phone: 760-891-4687    Fax: 760-684-8715
Dr. Reyzan E Shali, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 6185 Paseo Del Norte Ste 100, Carlsbad, CA 92011
Phone: 760-940-7000    Fax: 760-940-0042

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.