Dr Lee Michael Demertzis, MD - Medicare Critical Care (intensivists) in Saint Louis, MO

Dr Lee Michael Demertzis, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Saint Louis, Missouri. He went to Emory University School Of Medicine and graduated in 2004 and has 20 years of diverse experience with area of expertise as Critical Care (intensivists). He is a member of the group practice Mercy Clinic Adult Critical Care, Llc and his current practice location is 10010 Kennerly Rd, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 317-0600.

Dr Lee Michael Demertzis is licensed to practice in Missouri (license number 2006001553) 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 1831298827.

Contact Information

Dr Lee Michael Demertzis, MD
10010 Kennerly Rd,
Saint Louis, MO 63128-2106
(314) 317-0600
(314) 317-0606

Map and Direction




Physician's Profile

Full NameDr Lee Michael Demertzis
GenderMale
SpecialityCritical Care (intensivists)
Experience20 Years
Location10010 Kennerly Rd, Saint Louis, 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:
  • Dr Lee Michael Demertzis attended and graduated from Emory University School Of Medicine in 2004
  NPI Data:
  • NPI Number: 1831298827
  • Provider Enumeration Date: 09/22/2006
  • Last Update Date: 03/10/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 3375648017
  • Enrollment ID: I20070425000118

Medical Identifiers

Medical identifiers for Dr Lee Michael Demertzis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831298827NPI-NPPES
1831298827MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine 2006001553 (Missouri)Primary
207RP1001XInternal Medicine - Pulmonary Disease 2006001553 (Missouri)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Hospital SouthSaint louis, MOHospital
Mercy Hospital JeffersonFestus, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Clinic Adult Critical Care, Llc377951204146

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 Lee Michael Demertzis allows following entities to bill medicare on his behalf.
Entity NameMercy Clinic Adult Critical Care, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730119421
PECOS PAC ID: 3779512041
Enrollment ID: O20050808000024
Entity NameSoutheastern Physician Services Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083835441
PECOS PAC ID: 0042307852
Enrollment ID: O20160809000235
Entity NameIpc Pac Healthcare Services Of Missouri Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326497587
PECOS PAC ID: 4587950589
Enrollment ID: O20160830002898

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 Lee Michael Demertzis 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 Lee Michael Demertzis, MD
12101 Woodcrest Executive Dr, Suite 210,
Saint Louis, MO 63141-5047

Ph: (314) 317-0600
Dr Lee Michael Demertzis, MD
10010 Kennerly Rd,
Saint Louis, MO 63128-2106

Ph: (314) 317-0600

Reviews and Comments


Internal Medicine Doctors in Saint Louis, MO

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Phone: 314-362-1700    Fax: 314-362-9878
Dr. Erin Leigh Dyer, MD
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Phone: 314-362-5060    Fax: 314-362-6959

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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