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

Dr. Warren Orrin Ferris, MD

Individual provider Internal Medicine Physician · NPI 1487744280

Dr. Warren Orrin Ferris, MD is a Rheumatology in Silver Spring, Maryland. Graduated from University of Missouri, Columbia School of Medicine in 1976, 50 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
50
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
MD
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3305 N Leisure World Blvd
Silver Spring, MD 20906
Phone: (301) 598-1554
Fax: (301) 558-1509
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 D31918 (MD)
Rheumatology Physician Taxonomy 207RR0500X · Licence D31918 (MD)

Record details

NPI number1487744280
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESJune 19, 2013
Mailing address3305 North Leisure World Boulevard, Silver Spring, MD 20906

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 1976 (50 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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