Alexander S. Mark, M.D.
Diagnostic Radiology Physician · Rockville, MD
Alexander S. Mark, M.D. is a diagnostic radiology physician with a practice address in Rockville, Maryland, and NPI 1770573388, issued on Oct 25, 2005. Check the license (Maryland D40414, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Alexander S. Mark
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- D40414 MD
MD17472 DC
C1-0008339 DE
0101045431 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3202 Tower Oaks Blvd, Rockville, MD 20852
- Phone
- (301) 657-2444
- Enumerated
- Oct 25, 2005
- Record last updated
- Mar 30, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (301) 657-2450
- Medicare enrollment
- Enrolled (PECOS I20050304000231); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 877 in Maryland → Look up another NPI →
Also registered at 3202 Tower Oaks Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexander S. Mark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D40414Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $113.40
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Medstar Medical Group - Southern Maryland LLCHollywood, MD
- Medstar Medical Group II LLCWashington, DC
- Physician Imaging OF Washington Hospital Center LLCRockville, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander S. Mark among 877 diagnostic radiology physician records in Maryland
Alexander S. Mark, M.D. is one of 877 diagnostic radiology physician records with a practice address in Maryland. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1982 · median 2003 among the 604 with a school on file
- Record last updated2018 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Maryland
There are 877 diagnostic radiology physician records in Maryland.
All 877 in Maryland → Every provider in Rockville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Melissa Bloch-Menschik, M.D.Rockville, MD 208521578548889
- Jessica Hoots, MDRockville, MD 208521659527430
- Travis Howard, M.D.Rockville, MD 208521801165824
- Kunal Kothari, M.D., M.B.A.Rockville, MD 208521952692584
- David Lee, M.D.Rockville, MD 208521689889198
- Frank Lin, M.D.Rockville, MD 208521144377896
- Tamara Oei, M.D.Rockville, MD 208521992870653
- Roberto Soto, M.D.Rockville, MD 208521295755429
Common questions
What is Alexander S. Mark, M.D.'s NPI number?
Alexander S. Mark, M.D.'s National Provider Identifier (NPI) is 1770573388, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Alexander S. Mark, M.D. located?
The NPPES record lists a practice address at 3202 Tower Oaks Blvd, Rockville, MD, 20852. Phone: (301) 657-2444. Providers update this record themselves, so call before visiting.
How can I verify Alexander S. Mark, M.D.'s license?
NPPES lists Maryland license number D40414, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Alexander S. Mark, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.