Ms Mary Ann Holem, FNP-BC - Medicare Nurse Practitioner in Crystal Lake, IL

Ms Mary Ann Holem, FNP-BC is a medicare enrolled "Nurse Practitioner - Family" in Crystal Lake, Illinois. She graduated from nursing school in 2009 and has 15 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Lake County Acute Care Llp and her current practice location is 360 Station Dr, Crystal Lake, Illinois. You can reach out to her office (for appointments etc.) via phone at (815) 338-6600.

Ms Mary Ann Holem is licensed to practice in Illinois (license number 209008856) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1972897791.

Contact Information

Ms Mary Ann Holem, FNP-BC
360 Station Dr,
Crystal Lake, IL 60014
(815) 338-6600
(815) 455-8044

Map and Direction




Provider's Profile

Full NameMs Mary Ann Holem
GenderFemale
SpecialityNurse Practitioner
Experience15 Years
Location360 Station Dr, Crystal Lake, Illinois
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ms Mary Ann Holem graduated from nursing school in 2009
  NPI Data:
  • NPI Number: 1972897791
  • Provider Enumeration Date: 06/09/2011
  • Last Update Date: 10/19/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 6608034806
  • Enrollment ID: I20120220000445

Medical Identifiers

Medical identifiers for Ms Mary Ann Holem such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972897791NPI-NPPES
209008856OtherILSTATE LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner 209008856 (Illinois)Secondary
363LF0000XNurse Practitioner - Family 209008856 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Condell Medical CenterLibertyville, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Lake County Acute Care Llp539574728116

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. Ms Mary Ann Holem allows following entities to bill medicare on her behalf.
Entity NameNorthwestern Medical Faculty Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346235314
PECOS PAC ID: 4587576814
Enrollment ID: O20031105000541
Entity NameAdvocate Health And Hospitals Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700824455
PECOS PAC ID: 7810800935
Enrollment ID: O20031106000064
Entity NamePatient First Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548258072
PECOS PAC ID: 3274446596
Enrollment ID: O20031111000788
Entity NameLake County Acute Care Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861599052
PECOS PAC ID: 5395747281
Enrollment ID: O20070206000313

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. Ms Mary Ann Holem 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
Ms Mary Ann Holem, FNP-BC
360 Station Dr,
Crystal Lake, IL 60014-7978

Ph: (815) 338-6600
Ms Mary Ann Holem, FNP-BC
360 Station Dr,
Crystal Lake, IL 60014

Ph: (815) 338-6600

Reviews and Comments


Nurse Practitioner Nurses in Crystal Lake, IL

Sandra Jaeschke, CNP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 360 Station Dr, Crystal Lake, IL 60014
Phone: 815-338-6600    Fax: 815-455-8044
Mrs. Jenna T Winsko, ANP-BC
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 360 Station Dr, Suite 120, Crystal Lake, IL 60014
Phone: 815-477-8900    Fax: 815-477-7160
Mrs. Shannon Harrison Malone, FNP-BC
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 442 N Illinois Rte 31, Crystal Lake, IL 60012
Phone: 224-238-3211    
Katherine A Galias, APRN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 1095 Pingree Rd, Suite 108, Crystal Lake, IL 60014
Phone: 815-459-6655    Fax: 847-658-9922
Ashley Wallen, APN
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 151 Northwest Hwy, Crystal Lake, IL 60014
Phone: 866-825-3227    
Jessica Barrera, APN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 875 S Route 31, Crystal Lake, IL 60014
Phone: 779-220-5500    
Erin Williams, FNP-C
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 1305 Randall Rd, Crystal Lake, IL 60014
Phone: 815-356-0386    

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).

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