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Contact Information

WILLIAM S TWADDELL, M.D.
22 S GREENE ST
NBW73
BALTIMORE, MD21201-1544
 Phone: 410-328-5555
 Fax: 410-328-0929
 Website:
 

Specialty

Taxonomy Code Specialty Code Provider Type

Anatomic Pathology & Clinical Pathology

207ZP0102X 22 Physician/Pathology
 

Anatomic Pathology

207ZP0101X 22 Physician/Pathology
Indicates primary specialty

NPI Profile & details for WILLIAM S TWADDELL · (Male)

NPI Number 1538296124
Status Active
Credentials M.D.
Entity Individual
Enumeration date 02/28/2007
Last updated 05/07/2026 - About a month ago
Sole proprietor 1 No
Identifiers
  • MD License # D68076
  • NY License # 242497-1
Hospital affiliation(s)
  • MARYLAND GENERAL HOSPITAL - (Acute Care)
    827 LINDEN AVENUE
    BALTIMORE, MD 21201
  • UNIVERSITY OF MARYLAND MEDICAL CENTER - (Acute Care)
    22 SOUTH GREENE STREET
    BALTIMORE, MD 21201
1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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