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Edit this profileAt a glance
- 3202 Tower Oaks Blvd, Unit 120, Rockville, MD 20852
About Dr. Mark
Alexander S. Mark, M.D. practices diagnostic radiology in Rockville, MD. According to Medicare claims data, Alexander cared for 3,975 Medicare patients across 86,425 services. The services billed most often include injection, gadoterate meglumine, 0.1 ml, low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, and mri scan of lower spinal canal without contrast. The provider's National Provider Identifier (NPI) is 1770573388.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (301) 657-2444
- Email not available
Practice Locations
3202 TOWER OAKS BLVD UNIT 120
Rockville, MD 20852
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
86,425 services · 3,975 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Mri scan of lower spinal canal without contrast | Imaging | 72148 |
743 | More than most peers in Diagnostic Radiology |
| Mri scan of brain without contrast | Imaging | 70551 |
692 | More than most peers in Diagnostic Radiology |
| Mri scan of brain before and after contrast | Imaging | 70553 |
472 | More than most peers in Diagnostic Radiology |
| Mri scan of upper spinal canal without contrast | Imaging | 72141 |
453 | More than most peers in Diagnostic Radiology |
| Mri scan of leg joint without contrast | Imaging | 73721 |
227 | More often than most peers in Diagnostic Radiology |
| Mri scan of arm joint without contrast | Imaging | 73221 |
189 | More often than most peers in Diagnostic Radiology |
| Mri scan of brain without contrast | Imaging | 70551 |
159 | More than most peers in Diagnostic Radiology |
| Mri scan of blood vessels of head without contrast | Imaging | 70544 |
153 | More than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
149 | As often as other peers in Diagnostic Radiology |
| Mri scan of middle spinal canal without contrast | Imaging | 72146 |
120 | More than most peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiologists in Rockville 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1982 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Mri scan of lower spinal canal without contrast 8
Providers in MD who bill this service to Medicare most often.
Common questions
What does Alexander S. Mark specialize in?
Alexander S. Mark is a radiologist in Rockville, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Alexander S. Mark located?
Alexander S. Mark is listed at 3202 Tower Oaks Blvd Unit 120, Rockville, MD 20852. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Alexander S. Mark's phone number?
The number on file is (301) 657-2444. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Alexander S. Mark's NPI number?
Alexander S. Mark's National Provider Identifier is 1770573388. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Alexander S. Mark train?
Alexander S. Mark attended Other, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How long has Alexander S. Mark been practicing?
Alexander S. Mark has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What does Alexander S. Mark do most often?
According to Medicare billing data, Alexander S. Mark performs imaging including mri scan of lower spinal canal without contrast and mri scan of brain without contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Alexander S. Mark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Alexander S. Mark. If this is you, claiming it is free.
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