IndividualActive
William Marks, M.D.
NPI 1164579090 · Family Medicine Physician · Columbia, MD
Provider details
- NPI number
- 1164579090
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D31205 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
5900 Cedar Ln
Columbia, MD 21044-3635
Phone: (443) 718-4067
Fax: (443) 718-4068
Street-level locationGet directions
Mailing address
Po Box 759047
Baltimore, MD 21275-9047
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2012-10-23
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.