Tahir Mahmood, MD - Medicare Internal Medicine in Lombard, IL

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Tahir Mahmood, MD is a medicare enrolled "Internal Medicine" physician in Lombard, Illinois. He graduated from medical school in 1991 and has 33 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Mercy Health System Corporation, Rockford Hospitalist Group Llc and his current practice location is 2500 S Highland Ave Ste 230, Lombard, Illinois. You can reach out to his office (for appointments etc.) via phone at (630) 429-9000.

Tahir Mahmood is licensed to practice in Illinois (license number 036108276) 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 1598849895.

Contact Information

Tahir Mahmood, MD
2500 S Highland Ave Ste 230,
Lombard, IL 60148-7103
(630) 429-9000
(630) 429-9060

Map and Direction




Physician's Profile

Full NameTahir Mahmood
GenderMale
SpecialityInternal Medicine
Experience33 Years
Location2500 S Highland Ave Ste 230, Lombard, 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:
  • Tahir Mahmood graduated from medical school in 1991
  NPI Data:
  • NPI Number: 1598849895
  • Provider Enumeration Date: 10/24/2006
  • Last Update Date: 03/15/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 1658475546
  • Enrollment ID: I20070403000076

Medical Identifiers

Medical identifiers for Tahir Mahmood such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1598849895NPI-NPPES
036108276MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 036108276 (Illinois)Secondary
207R00000XInternal Medicine 036108276 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Health System CorpJanesville, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Health System Corporation7416860440475
Rockford Hospitalist Group Llc983055949135

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. Tahir Mahmood allows following entities to bill medicare on his behalf.
Entity NameMercy Health System Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598718603
PECOS PAC ID: 7416860440
Enrollment ID: O20031111000307
Entity NameBest Practices Inpatient Care, Ltd.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619913522
PECOS PAC ID: 5799687372
Enrollment ID: O20040123000525
Entity NameUptown Emergency Physicians Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811135882
PECOS PAC ID: 8921096850
Enrollment ID: O20040430001269
Entity NamePrimary Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235461765
PECOS PAC ID: 3870623101
Enrollment ID: O20100614000473
Entity NameIllinois Hospitalists Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871832931
PECOS PAC ID: 8224275862
Enrollment ID: O20130520000092
Entity NameRockford Hospitalist Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750088852
PECOS PAC ID: 9830559491
Enrollment ID: O20230714002271

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. Tahir Mahmood 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
Tahir Mahmood, MD
2500 S Highland Ave Ste 230,
Lombard, IL 60148-7103

Ph: (630) 429-9000		Tahir Mahmood, MD
2500 S Highland Ave Ste 230,
Lombard, IL 60148-7103

Ph: (630) 429-9000

Reviews and Comments


Internal Medicine Doctors in Lombard, IL

Dr. Diane Gale Rapaport, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 580 Waters Edge, Suite 100, Lombard, IL 60148
Phone: 630-495-8484    Fax: 630-495-1598
Rong Shang Tu, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 2340 S Highland Ave, 230, Lombard, IL 60148
Phone: 630-932-2040    Fax: 866-932-1513
Dr. Nasser A Boshra, M.D
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Medicare: Accepting Medicare Assignments
Practice Location: 1801 S Highland Ave Ste 130, Lombard, IL 60148
Phone: 630-627-4722    Fax: 630-627-9134
Shawn George, DO
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 500 E. 22nd Street, Suite A, Lombard, IL 60148
Phone: 630-932-2055    Fax: 630-932-2059
Julia C Andreoni, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 1801 S Highland Ave, Ste 130, Lombard, IL 60148
Phone: 630-627-4722    
Ninel Kandel, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 130 S Main St Ste 201, Lombard, IL 60148
Phone: 331-221-9001    Fax: 331-221-3957
Dr. Laura U Vetrone, MD.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 130 S Main St Ste 201, Lombard, IL 60148
Phone: 331-221-9001    

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.