Dr Dennis Alan Peacock, MD - Medicare Internal Medicine in Chicago, IL

Dr Dennis Alan Peacock, MD is a medicare enrolled "Internal Medicine" physician in Chicago, Illinois. He went to University Of Tennessee, Hsc, College Of Medicine and graduated in 2004 and has 20 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Loyola University Medical Center and his current practice location is 1333 W Belmont Ave Ste 100, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 694-2273.

Dr Dennis Alan Peacock is licensed to practice in Illinois (license number 036.141382) 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 1023223021.

Contact Information

Dr Dennis Alan Peacock, MD
1333 W Belmont Ave Ste 100,
Chicago, IL 60657
(312) 694-2273
(312) 694-1875

Map and Direction




Physician's Profile

Full NameDr Dennis Alan Peacock
GenderMale
SpecialityInternal Medicine
Experience20 Years
Location1333 W Belmont Ave Ste 100, Chicago, 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 Dennis Alan Peacock attended and graduated from University Of Tennessee, Hsc, College Of Medicine in 2004
  NPI Data:
  • NPI Number: 1023223021
  • Provider Enumeration Date: 05/11/2007
  • Last Update Date: 05/27/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6901973932
  • Enrollment ID: I20170206001786

Medical Identifiers

Medical identifiers for Dr Dennis Alan Peacock such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023223021NPI-NPPES
05024018MedicaidMS
1073849MedicaidLA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 200700 (Louisiana)Secondary
208000000XPediatrics 036.141382 (Illinois)Secondary
208000000XPediatrics 200700 (Louisiana)Secondary
207R00000XInternal Medicine 036.141382 (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 Center3779488903857

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 Dennis Alan Peacock allows following entities to bill medicare on his behalf.
Entity NameLoyola University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336159961
PECOS PAC ID: 3779488903
Enrollment ID: O20031202000027
Entity NameGottlieb Community Health Services Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013415603
PECOS PAC ID: 3375442999
Enrollment ID: O20180420000980
Entity NameLoyola Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376041954
PECOS PAC ID: 6305109547
Enrollment ID: O20180420002063

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 Dennis Alan Peacock 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 Dennis Alan Peacock, MD
680 N. Lake Shore Drive,
Chicago, IL 60611-2987

Ph: (312) 695-6868
Dr Dennis Alan Peacock, MD
1333 W Belmont Ave Ste 100,
Chicago, IL 60657

Ph: (312) 694-2273

Reviews and Comments


Internal Medicine Doctors in Chicago, IL

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Dr. Marta Batus, MD
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Practice Location: 1725 W Harrison St, Suite 809, Chicago, IL 60612
Phone: 312-563-2487    Fax: 312-942-3192

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.