Leo Hsu, MD - Medicare Emergency Medicine in O Fallon, MO

Leo Hsu, MD is a medicare enrolled "Emergency Medicine" physician in O Fallon, Missouri. He went to Saint Louis University School Of Medicine and graduated in 2003 and has 21 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Southeastern Emergency Physicians Of Memphis Llc and his current practice location is 2 Progress Point Ct, O Fallon, Missouri. You can reach out to his office (for appointments etc.) via phone at (636) 344-1151.

Leo Hsu is licensed to practice in Missouri (license number 2006007889) 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 1215965702.

Contact Information

Leo Hsu, MD
2 Progress Point Ct,
O Fallon, MO 63368-2208
(636) 344-1151
Not Available

Map and Direction




Physician's Profile

Full NameLeo Hsu
GenderMale
SpecialityEmergency Medicine
Experience21 Years
Location2 Progress Point Ct, O Fallon, Missouri
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:
  • Leo Hsu attended and graduated from Saint Louis University School Of Medicine in 2003
  NPI Data:
  • NPI Number: 1215965702
  • Provider Enumeration Date: 06/30/2006
  • Last Update Date: 08/25/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 8123025921
  • Enrollment ID: I20171218000375

Medical Identifiers

Medical identifiers for Leo Hsu such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215965702NPI-NPPES
201102902MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 2006007889 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Progress West HospitalO fallon, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Southeastern Emergency Physicians Of Memphis Llc539564320982

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. Leo Hsu allows following entities to bill medicare on his behalf.
Entity NameSoutheastern Emergency Physicians Of Memphis Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437105277
PECOS PAC ID: 5395643209
Enrollment ID: O20150520001245
Entity NameEmergency Services Midwest Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174024806
PECOS PAC ID: 2769746056
Enrollment ID: O20180515000619

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. Leo Hsu 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
Leo Hsu, MD
2 Progress Point Ct,
O Fallon, MO 63368-2208

Ph: (636) 344-1151
Leo Hsu, MD
2 Progress Point Ct,
O Fallon, MO 63368-2208

Ph: (636) 344-1151

Reviews and Comments


Emergency Medicine Doctors in O Fallon, MO

Miss Kristen M Farris, PA-C
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 20 Progress Point Pkwy Ste 100, O Fallon, MO 63368
Phone: 636-344-3105    
Dr. Nancy Jane Niemann Royer, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 2 Progress Point Parkway, Progress West Health Care Center Attn Er, O Fallon, MO 63368
Phone: 636-344-1151    Fax: 636-344-1176
Robert D Wiele, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2 Progress Point Ct, Progress West Health Center, O Fallon, MO 63368
Phone: 314-740-6471    
Mrs. Andrea Lynn Gagliano, NP
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2 Progress Point Pkwy # 812024, O Fallon, MO 63368
Phone: 636-344-1151    
Timothy D Moore, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2630 Highway K, O Fallon, MO 63368
Phone: 636-240-5454    Fax: 636-980-5335
Joseph Kohout, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 2 Progress Point Ct, O Fallon, MO 63368
Phone: 636-916-9000    

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.