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

Howard W Sill, MD, PHD

Individual provider Vascular & Interventional Radiology Physician · NPI 1679766844

Howard W Sill, MD, PHD is an Interventional Radiology in Hagerstown, Maryland. Graduated from University of Pittsburgh School of Medicine in 1997, 29 years ago. Practices with Medical Practices of Antietam, LLC, a 231-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
29
Trained at
University of Pittsburgh School of Medicine
Licensed in
MD
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

11116 Medical Campus Rd
Hagerstown, MD 21742-6710
Phone: (301) 790-8000
Show map & directions

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

Specialties & licences

Vascular & Interventional Radiology Physician (primary) Taxonomy 2085R0204X · Licence D0105205 (MD)

Record details

NPI number1679766844
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedAugust 21, 2007
Last updated in NPPESNovember 25, 2025
Certification dateNovember 25, 2025
Mailing address11116 Medical Campus Rd, Hagerstown, MD 21742-6710

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL RADIOLOGY
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Medical Practices Of Antietam, Llc — 231 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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