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

Dr. Calvin Thomas Williams Jr., MD/PHD

Individual provider Internal Medicine Physician · NPI 1023308640

Dr. Calvin Thomas Williams Jr., MD/PHD is an Internal Medicine in Baltimore, Maryland. Graduated from University of Maryland School of Medicine in 2011, 15 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Delaware and Maryland.

Years since qualifying
15
Trained at
University of Maryland School of Medicine
Licensed in
DE, MD
In the registry since
2011
Specialties on file
4

Practice location Address checks out

201 E University Pkwy Dept OF Medicine Medstar Union Memorial Hospital
Baltimore, MD 21218-2829
Phone: (443) 474-9911
Show map & directions

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence D0081038 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0081038 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence C7-0004863 (DE)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1023308640
Entity typeIndividual (Type 1)
GenderMale
Credentials MD/PHD
Sole proprietorNo
NPI enumeratedApril 15, 2011
Last updated in NPPESApril 24, 2018

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Baltimore