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

Charles Key Cooper, MD

Individual provider Internal Medicine Physician · NPI 1962631218

Charles Key Cooper, MD practises Internal Medicine in Baltimore, Maryland. Graduated from Georgetown University School of Medicine in 1995, 31 years ago. Practices with Greater Baden Medical Service Incorporated, a 35-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
31
Trained at
Georgetown University School of Medicine
Licensed in
MD
In the registry since
2009
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

2401 W Baltimore St
Baltimore, MD 21223
Phone: (410) 362-3331
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1458 Addison Rd S, Capitol Heights, MD 20743-4413 — (301) 324-1500

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence D0053185 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0053185 (MD)

Record details

NPI number1962631218
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2009
Last updated in NPPESFebruary 16, 2023
Certification dateFebruary 16, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Greater Baden Medical Service Incorporated — 35 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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.

Food and Beverage $27 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.

Colleagues at Greater Baden Medical Service Incorporated

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 35 clinicians in the practice; 12 are shown here.

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