Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Daniel Jon Merenstein, MD

Individual provider Family Medicine Physician · NPI 1780748822

Dr. Daniel Jon Merenstein, MD is registered under Family Practice in Vienna, Virginia. Graduated from Jefferson Medical College of Thomas Jefferson University in 1997, 29 years ago. Practices with Medstar Urgent Care LLC, a 299-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia and Virginia.

Years since qualifying
29
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
DC, VA
In the registry since
2006
Specialties on file
2
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

180 Maple Ave W
Vienna, VA 22180-5727
Phone: (703) 938-5300
Fax: (703) 242-0726
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 201 North Washington Street, Falls Church, VA 22046-4518 — (703) 237-4020

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 0101058211 (VA)
Family Medicine Physician Taxonomy 207Q00000X · Licence MD32709 (DC)

Record details

NPI number1780748822
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 21, 2006
Last updated in NPPESNovember 14, 2022
Certification dateNovember 14, 2022

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 1997 (29 years in practice)
Group practice Medstar Urgent Care Llc — 299 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients217
Services billed 379 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Medstar Urgent Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 299 clinicians in the practice; 12 are shown here.

Other providers in Vienna