Mr Ather Ali, MD - Medicare Family Practice in Crystal Lake, IL

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Mr Ather Ali, MD is a medicare enrolled "Hospitalist" physician in Crystal Lake, Illinois. He graduated from medical school in 2007 and has 19 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Mercy Health System Corporation and his current practice location is 875 Route 31, Crystal Lake, Illinois. You can reach out to his office (for appointments etc.) via phone at (779) 220-5500.

Mr Ather Ali is licensed to practice in Illinois (license number 036144860) 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 1518308246.

Contact Information

Mr Ather Ali, MD
875 Route 31,
Crystal Lake, IL 60014
(779) 220-5500
Not Available

Map and Direction




Physician's Profile

Full NameMr Ather Ali
GenderMale
SpecialityFamily Practice
Experience19 Years
Location875 Route 31, Crystal Lake, 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:
  • Mr Ather Ali graduated from medical school in 2007
  NPI Data:
  • NPI Number: 1518308246
  • Provider Enumeration Date: 07/10/2013
  • Last Update Date: 07/10/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 2365763315
  • Enrollment ID: I20200109001931

Medical Identifiers

Medical identifiers for Mr Ather Ali such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1518308246NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 66068 (Wisconsin)Secondary
207Q00000XFamily Medicine 036144860 (Illinois)Secondary
208M00000XHospitalist 036144860 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Harvard HospitalHarvard, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Health System Corporation7416860440564

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. Mr Ather Ali 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 NameAdvance Inpatient Medicine Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265989875
PECOS PAC ID: 8022305697
Enrollment ID: O20160926000797
Entity NameCommunity Home Physicians Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568909505
PECOS PAC ID: 4981988771
Enrollment ID: O20170222001318

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. Mr Ather Ali 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
Mr Ather Ali, MD
977 N York St,
Elmhurst, IL 60126-1100

Ph: (331) 645-0394		Mr Ather Ali, MD
875 Route 31,
Crystal Lake, IL 60014

Ph: (779) 220-5500

Reviews and Comments


Hospitalist Doctors in Crystal Lake, IL

Kavi Patel, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 525 E Congress Pkwy Ste 300, Crystal Lake, IL 60014
Phone: 815-759-9260    Fax: 815-459-7840

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.