Dr Daniel J Riordan, DO - Medicare Internal Medicine in Muskego, WI

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Dr Daniel J Riordan, DO is a medicare enrolled "Internal Medicine" physician in Muskego, Wisconsin. He went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 2003 and has 22 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Prohealth Medical Group Inc and his current practice location is S69w15636 Janesville Rd, Muskego, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (262) 928-7000.

Dr Daniel J Riordan is licensed to practice in Wisconsin (license number 49311) 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 1174545891.

Contact Information

Dr Daniel J Riordan, DO
S69w15636 Janesville Rd,
Muskego, WI 53150-9330
(262) 928-7000
(414) 422-2079

Map and Direction




Physician's Profile

Full NameDr Daniel J Riordan
GenderMale
SpecialityInternal Medicine
Experience22 Years
LocationS69w15636 Janesville Rd, Muskego, Wisconsin
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 Daniel J Riordan attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 2003
  NPI Data:
  • NPI Number: 1174545891
  • Provider Enumeration Date: 07/24/2006
  • Last Update Date: 01/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 3173527272
  • Enrollment ID: I20060901000228

Medical Identifiers

Medical identifiers for Dr Daniel J Riordan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174545891NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 49311 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Prohealth Home CareWaukesha, WIHome health agency
Prohealth Home HospiceWaukesha, WIHospice
Waukesha Memorial HospitalWaukesha, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Prohealth Medical Group Inc3476465188443

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 Daniel J Riordan allows following entities to bill medicare on his behalf.
Entity NameProhealth Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356322440
PECOS PAC ID: 3476465188
Enrollment ID: O20031103000066

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 Daniel J Riordan 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 Daniel J Riordan, DO
S69w15636 Janesville Rd,
Muskego, WI 53150-9330

Ph: (262) 928-7000		Dr Daniel J Riordan, DO
S69w15636 Janesville Rd,
Muskego, WI 53150-9330

Ph: (262) 928-7000

Reviews and Comments


Internal Medicine Doctors in Muskego, WI

James M. Chapman, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: S69 W15636 Janesville Road, Prohealth Care Medical Associates, Inc., Muskego, WI 53150
Phone: 262-928-7000    Fax: 414-422-2075
Steven J Mamerow, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: S69 W15636 Janesville Road, Prohealth Care Medical Associates, Inc, Muskego, WI 53150
Phone: 262-928-7000    Fax: 414-422-2075
Mary Ann Sonsalla, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Prohealth Care Medical Centers-muskego, S69 W15636 Janesville Road, Muskego, WI 53150
Phone: 262-928-7000    Fax: 414-422-2075
Mrs. Lindsey Michele Simpson, A.P.N.P
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: W146s7732 Stags Leap Ct, Muskego, WI 53150
Phone: 414-305-1392    
Stephen L Blonsky, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: S88w12923 Upland Ln, Muskego, WI 53150
Phone: 715-212-1291    
Stephen J Dufresne, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Prohealth Care Medical Centers-muskego, S69 W15636 Janesville Road, Muskego, WI 53150
Phone: 262-928-7000    Fax: 414-422-2075

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.