Dr Monica M O'sullivan, MD - Medicare Internal Medicine in West Allis, WI

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Dr Monica M O'sullivan, MD is a medicare enrolled "Internal Medicine" physician in West Allis, Wisconsin. She went to Medical College Of Wisconsin and graduated in 1999 and has 25 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Froedtert Andthe Medical College Of Wisconsin Community Physicians Inc and her current practice location is 11211 W Lincoln Ave, West Allis, Wisconsin. You can reach out to her office (for appointments etc.) via phone at (414) 454-8300.

Dr Monica M O'sullivan is licensed to practice in Wisconsin (license number 44298) 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 1043262546.

Contact Information

Dr Monica M O'sullivan, MD
11211 W Lincoln Ave,
West Allis, WI 53227-1035
(414) 454-8300
(414) 327-1450

Map and Direction




Physician's Profile

Full NameDr Monica M O'sullivan
GenderFemale
SpecialityInternal Medicine
Experience25 Years
Location11211 W Lincoln Ave, West Allis, Wisconsin
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:
  • Dr Monica M O'sullivan attended and graduated from Medical College Of Wisconsin in 1999
  NPI Data:
  • NPI Number: 1043262546
  • Provider Enumeration Date: 05/16/2006
  • Last Update Date: 09/09/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2466340120
  • Enrollment ID: I20040305000493

Medical Identifiers

Medical identifiers for Dr Monica M O'sullivan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043262546NPI-NPPES
004000261VOtherHUMANA
1043262546MedicaidWI
34193700MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 44298 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Froedtert Memorial Lutheran HospitalMilwaukee, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Froedtert Andthe Medical College Of Wisconsin Community Physicians Inc36787600631040

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 Monica M O'sullivan allows following entities to bill medicare on her behalf.
Entity NameThe Medical College Of Wisconsin Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699720086
PECOS PAC ID: 2668384371
Enrollment ID: O20031120000259
Entity NameFroedtert &the Medical College Of Wisconsin Community Physicians Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568787448
PECOS PAC ID: 3678760063
Enrollment ID: O20101210000699

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 Monica M O'sullivan 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 Monica M O'sullivan, MD
11211 W Lincoln Ave,
West Allis, WI 53227-1035

Ph: (414) 454-8300		Dr Monica M O'sullivan, MD
11211 W Lincoln Ave,
West Allis, WI 53227-1035

Ph: (414) 454-8300

Reviews and Comments


Internal Medicine Doctors in West Allis, WI

Dr. Hesham M Elghannam, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2424 S 90th St Ste 300, West Allis, WI 53227
Phone: 414-328-8150    
Dr. Ruchit D Shah, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8901 W Lincoln Ave, West Allis, WI 53227
Phone: 414-328-7146    
Hashim Sadig, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2514 S 102nd St, 160, West Allis, WI 53227
Phone: 414-225-0300    
Neil Reisinger, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 904 S 114th St, West Allis, WI 53214
Phone: 414-259-9234    
Dr. Isaac Olabode Taiwo, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 8901 W Lincoln Ave, West Allis, WI 53227
Phone: 414-328-6000    Fax: 414-649-1328
Dr. Susan L Darmstadter, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8905 W Lincoln Ave, Ste 401, West Allis, WI 53227
Phone: 414-328-8270    

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.