Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Alexander S. Mark, MD

Individual provider Diagnostic Radiology Physician · NPI 1770573388

Alexander S. Mark, MD is a Diagnostic Radiology in Rockville, Maryland. Qualified in 1982, 44 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group and accepts Medicare assignment. Licensed in District of Columbia, Delaware, Maryland and Virginia.

Years since qualifying
44
Licensed in
DC, DE, MD, VA
In the registry since
2005
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3202 Tower Oaks Blvd Unit 120
Rockville, MD 20852-4219
Phone: (301) 657-2444
Fax: (301) 657-2450
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence D40414 (MD)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence C1-0008339 (DE)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence MD17472 (DC)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 0101045431 (VA)

Record details

NPI number1770573388
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 25, 2005
Last updated in NPPESMarch 30, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Also practisesINTERVENTIONAL RADIOLOGY
Medical schoolOTHER
Graduated 1982 (44 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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