Gregory Morris Giesler, MD - Medicare Cardiovascular Disease (cardiology) in Pasadena, CA

Gregory Morris Giesler, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Pasadena, California. He went to Chicago College Of Medicine And Surgery and graduated in 1999 and has 25 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Southern California Heart Specialists and his current practice location is 55 E California Blvd, 3rd Floor, Pasadena, California. You can reach out to his office (for appointments etc.) via phone at (626) 793-1227.

Gregory Morris Giesler is licensed to practice in California (license number A75160) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1477518454.

Contact Information

Gregory Morris Giesler, MD
55 E California Blvd, 3rd Floor,
Pasadena, CA 91105-3944
(626) 793-1227
(626) 793-3794

Map and Direction




Physician's Profile

Full NameGregory Morris Giesler
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience25 Years
Location55 E California Blvd, Pasadena, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gregory Morris Giesler attended and graduated from Chicago College Of Medicine And Surgery in 1999
  NPI Data:
  • NPI Number: 1477518454
  • Provider Enumeration Date: 04/20/2006
  • Last Update Date: 04/12/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 3577500693
  • Enrollment ID: I20060522000061

Medical Identifiers

Medical identifiers for Gregory Morris Giesler such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1477518454NPI-NPPES
A75160OtherCABLUE SHIELD
P00335335OtherCARAIL RAOD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease A75160 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Huntington Memorial HospitalPasadena, CAHospital
Methodist Hospital Of Southern CaArcadia, CAHospital
Usc Verdugo Hills HospitalGlendale, CAHospital
Good Samaritan HospitalLos angeles, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Southern California Heart Specialists03451438306

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. Gregory Morris Giesler allows following entities to bill medicare on his behalf.
Entity NameSouthern California Heart Specialists
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821055054
PECOS PAC ID: 0345143830
Enrollment ID: O20040130001081

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. Gregory Morris Giesler 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
Gregory Morris Giesler, MD
55 E California Blvd, 3rd Floor,
Pasadena, CA 91105-3944

Ph: (626) 793-1227
Gregory Morris Giesler, MD
55 E California Blvd, 3rd Floor,
Pasadena, CA 91105-3944

Ph: (626) 793-1227

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.