Alexander S Mark, MD - Medicare Diagnostic Radiology in Rockville, MD

Alexander S Mark, MD is a medicare enrolled "Radiology - Diagnostic Radiology" physician in Rockville, Maryland. He graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Diagnostic Radiology. He is a member of the group practice Medstar Medical Group Radiology Llc, Physician Imaging Of Washington Hospital Center Llc and his current practice location is 3202 Tower Oaks Blvd, Unit 120, Rockville, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 657-2444.

Alexander S Mark is licensed to practice in Maryland (license number D40414) 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 1770573388.

Contact Information

Alexander S Mark, MD
3202 Tower Oaks Blvd, Unit 120,
Rockville, MD 20852-4219
(301) 657-2444
(301) 657-2450

Map and Direction




Physician's Profile

Full NameAlexander S Mark
GenderMale
SpecialityDiagnostic Radiology
Experience42 Years
Location3202 Tower Oaks Blvd, Rockville, Maryland
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:
  • Alexander S Mark graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1770573388
  • Provider Enumeration Date: 10/25/2005
  • Last Update Date: 03/30/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 9234026618
  • Enrollment ID: I20050304000231

Medical Identifiers

Medical identifiers for Alexander S Mark such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770573388NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0202XRadiology - Diagnostic Radiology C1-0008339 (Delaware)Secondary
2085R0202XRadiology - Diagnostic Radiology MD17472 (District Of Columbia)Secondary
2085R0202XRadiology - Diagnostic Radiology 0101045431 (Virginia)Secondary
2085R0202XRadiology - Diagnostic Radiology D40414 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Medstar Saint Mary's HospitalLeonardtown, MDHospital
Medstar Southern Maryland Hospital CenterClinton, MDHospital
Medstar Franklin Square Medical CenterBaltimore, MDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Medstar Medical Group Radiology Llc1557589157161
Physician Imaging Of Washington Hospital Center Llc620491029281

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. Alexander S Mark allows following entities to bill medicare on his behalf.
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20040102000644
Entity NamePhysician Imaging Of Washington Hospital Center Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831385871
PECOS PAC ID: 6204910292
Enrollment ID: O20080229000143
Entity NameMedstar Medical Group Radiology Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326450156
PECOS PAC ID: 1557589157
Enrollment ID: O20140826000263

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. Alexander S Mark 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
Alexander S Mark, MD
Po Box 1085,
Lima, OH 45802-1085

Ph: (844) 466-5613
Alexander S Mark, MD
3202 Tower Oaks Blvd, Unit 120,
Rockville, MD 20852-4219

Ph: (301) 657-2444

Reviews and Comments


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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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