Dr Ruheri A Perez-tamayo, MD,PHD - Medicare Cardiac Surgery in Mchenry, IL

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Dr Ruheri A Perez-tamayo, MD,PHD is a medicare enrolled "Thoracic Surgery (cardiothoracic Vascular Surgery)" physician in Mchenry, Illinois. He graduated from medical school in 1990 and has 34 years of diverse experience with area of expertise as Cardiac Surgery. He is a member of the group practice Loyola University Medical Center and his current practice location is 4309 Medical Center Drive, Ste. A200, Mchenry, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 759-4699.

Dr Ruheri A Perez-tamayo is licensed to practice in Illinois (license number 036100023) 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 1881655397.

Contact Information

Dr Ruheri A Perez-tamayo, MD,PHD
4309 Medical Center Drive, Ste. A200,
Mchenry, IL 60050
(815) 759-4699
(815) 759-8938

Map and Direction




Physician's Profile

Full NameDr Ruheri A Perez-tamayo
GenderMale
SpecialityCardiac Surgery
Experience34 Years
Location4309 Medical Center Drive, Mchenry, Illinois
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:
  • Dr Ruheri A Perez-tamayo graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1881655397
  • Provider Enumeration Date: 04/01/2006
  • Last Update Date: 02/04/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5092724377
  • Enrollment ID: I20060413000657

Medical Identifiers

Medical identifiers for Dr Ruheri A Perez-tamayo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881655397NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086S0102XSurgery - Surgical Critical Care 036100023 (Illinois)Secondary
208G00000XThoracic Surgery (cardiothoracic Vascular Surgery) 036100023 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Loyola University Medical CenterMaywood, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Loyola University Medical Center3779488903863

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 Ruheri A Perez-tamayo allows following entities to bill medicare on his behalf.
Entity NameCardiac Surgery Associates Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043269160
PECOS PAC ID: 2860304102
Enrollment ID: O20031104000518
Entity NameLoyola University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336159961
PECOS PAC ID: 3779488903
Enrollment ID: O20031202000027
Entity NameSwedishamerican Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962451732
PECOS PAC ID: 5799698346
Enrollment ID: O20031215000012
Entity NameGottlieb Community Health Services Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013415603
PECOS PAC ID: 3375442999
Enrollment ID: O20180420000980

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 Ruheri A Perez-tamayo 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 Ruheri A Perez-tamayo, MD,PHD
321 S Ashland Ave,
La Grange, IL 60525-6307

Ph: (708) 822-3064		Dr Ruheri A Perez-tamayo, MD,PHD
4309 Medical Center Drive, Ste. A200,
Mchenry, IL 60050

Ph: (815) 759-4699

Reviews and Comments


Thoracic Surgery (Cardiothoracic Vascular Surgery) Doctors in Mchenry, IL


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.