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

Mark S. Johnson, MD

Individual provider Family Medicine Physician · NPI 1659462190

Mark S. Johnson, MD is registered under Family Practice in Washington, District of Columbia. Graduated from Rutgers New Jersey Medical School in 1979, 47 years ago. Practices with Howard University, a 182-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
47
Trained at
Rutgers New Jersey Medical School
Licensed in
NJ
In the registry since
2006
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

2041 Georgia Ave NW # T3200
Washington, DC 20060
Phone: (202) 865-4440
Fax: (202) 865-3214
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 90 Bergen St, Newark, NJ 07103-2425 — (973) 972-2111
  • 90 Bergen St, Newark, NJ 07103-2425 — (973) 972-2111

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 25MA05722100 (NJ)

Record details

NPI number1659462190
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 28, 2006
Last updated in NPPESNovember 8, 2019

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 1979 (47 years in practice)
Group practice Howard University — 182 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients23
Services billed 34 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $12,090 1 payment
Food and Beverage $115 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Howard University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 182 clinicians in the practice; 12 are shown here.

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