Gustavo A Diaz, MD - Medicare Emergency Medicine in Seaside, CA

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Gustavo A Diaz, MD is a medicare enrolled "Emergency Medicine" physician in Seaside, California. His current practice location is 1513 Fremont Blvd, E1, Seaside, California. You can reach out to his office (for appointments etc.) via phone at (831) 899-1910.

Gustavo A Diaz is licensed to practice in California (license number C54872) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1538122635.

Contact Information

Gustavo A Diaz, MD
1513 Fremont Blvd, E1,
Seaside, CA 93955-4319
(831) 899-1910
(831) 393-9483

Map and Direction




Physician's Profile

Full NameGustavo A Diaz
GenderMale
SpecialityEmergency Medicine
Location1513 Fremont Blvd, Seaside, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1538122635
  • Provider Enumeration Date: 04/10/2006
  • Last Update Date: 10/10/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 1254374713
  • Enrollment ID: I20111213000435

Medical Identifiers

Medical identifiers for Gustavo A Diaz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538122635NPI-NPPES
000000006706OtherMABMC
04-3329195OtherMANORTH AMERICAN PREFERRED
04-3329195OtherMAGREAT-WEST
102531OtherMACIGNA
2359897OtherMAAETNA
04-3329195OtherMAPHCS
04-3329195OtherMAUNICARE/GIC
04-3329195OtherMANORTHEAST HEALTHCARE ALLI
04-3329195OtherMANORTHEAST HEALTH DIRECT
04-3329195OtherMAPLAN VISTA
053006OtherMATUFTS
24922OtherMAHEALTH NEW ENGLAND
3000915MedicaidMA
438822OtherMAHARVARD PILGRIM
632919OtherMACONNECTICARE
J08576OtherMABCBS MA
04-3329195OtherMACONSOLIDATED

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 53006 (Massachusetts)Secondary
207P00000XEmergency Medicine C54872 (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. Gustavo A Diaz allows following entities to bill medicare on his behalf.
Entity NamePinnacle Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669557930
PECOS PAC ID: 8921081076
Enrollment ID: O20040609001432
Entity NameAmerican Current Care Of California A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750573622
PECOS PAC ID: 5799854303
Enrollment ID: O20080522000420

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. Gustavo A Diaz 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
Gustavo A Diaz, MD
Po Box 2300,
Salinas, CA 93902-2300

Ph: (831) 649-1000		Gustavo A Diaz, MD
1513 Fremont Blvd, E1,
Seaside, CA 93955-4319

Ph: (831) 899-1910

Reviews and Comments


Emergency Medicine Doctors in Seaside, CA


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.