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

Charles W Phelps, MD

Individual provider Internal Medicine Physician · NPI 1407871171

Charles W Phelps, MD is an Internal Medicine in Annapolis, Maryland. Graduated from University of Maryland School of Medicine in 1988, 38 years ago. Practices with Greenfield Associates, MD, PA, a 3-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
38
Trained at
University of Maryland School of Medicine
Licensed in
MD
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

139 Old Solomons Island Rd
Annapolis, MD 21401
Phone: (410) 224-2222
Fax: (410) 224-4926
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0041816 (MD)

Record details

NPI number1407871171
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESJuly 8, 2007
Mailing address139 Old Solomons Island Rd, Annapolis, MD 21401

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Greenfield Associates, M.D., P.A. — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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