Mary Sidawy, - Medicare Pathology in Washington, DC

Mary Sidawy, is a medicare enrolled "Pathology - Cytopathology" physician in Washington, District Of Columbia. She graduated from medical school in 1978 and has 46 years of diverse experience with area of expertise as Pathology. She is a member of the group practice Medstar Medical Group Ii Llc, Mgmc Llc and her current practice location is 3800 Reservoir Rd Nw, Washington, District Of Columbia. You can reach out to her office (for appointments etc.) via phone at (202) 444-3627.

Mary Sidawy is licensed to practice in District Of Columbia (license number 13514) 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 1104802412.

Contact Information

Mary Sidawy,
3800 Reservoir Rd Nw,
Washington, DC 20007-2113
(202) 444-3627
Not Available

Map and Direction




Physician's Profile

Full NameMary Sidawy
GenderFemale
SpecialityPathology
Experience46 Years
Location3800 Reservoir Rd Nw, Washington, District Of Columbia
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:
  • Mary Sidawy graduated from medical school in 1978
  NPI Data:
  • NPI Number: 1104802412
  • Provider Enumeration Date: 12/19/2005
  • Last Update Date: 03/15/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 1153355714
  • Enrollment ID: I20050922000800

Medical Identifiers

Medical identifiers for Mary Sidawy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1104802412NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207ZC0500XPathology - Cytopathology 13514 (District Of Columbia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Medstar Georgetown University HospitalWashington, DCHospital
Medstar Washington Hospital CenterWashington, DCHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Medstar Medical Group Ii Llc05474138251727
Mgmc Llc9537073119414

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. Mary Sidawy allows following entities to bill medicare on her behalf.
Entity NameMgmc Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891797148
PECOS PAC ID: 9537073119
Enrollment ID: O20031220000056
Entity NameMedstar Medical Group Ii Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184046187
PECOS PAC ID: 0547413825
Enrollment ID: O20130117000415

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. Mary Sidawy 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
Mary Sidawy,
Po Box 418283,
Boston, MA 02241-8283

Ph: (703) 558-1544
Mary Sidawy,
3800 Reservoir Rd Nw,
Washington, DC 20007-2113

Ph: (202) 444-3627

Reviews and Comments


Pathology Doctors in Washington, DC

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Dr. Luigi Kuo Feng Rao, M.D., M.S.
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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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