William Andrew Marks, M.D.
Family Medicine Physician · Columbia, MD
William Andrew Marks, M.D. is a family medicine physician with a practice address in Columbia, Maryland, and NPI 1164579090, issued on Jan 4, 2007. Check the license (Maryland D31205, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Andrew Marks
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D31205 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5900 Cedar LN, Columbia, MD 21044
- Phone
- (443) 718-4067
- Enumerated
- Jan 4, 2007
- Record last updated
- Oct 23, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (443) 718-4068
- Medicaid ID
- 366591700 MD
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 5900 Cedar LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lisa Cardo, MDInternal Medicine Physician1699836874
- Nancy Doong, PA-CPhysician Assistant1306855473
- Timothy Jayne, PA-CPhysician Assistant1538303086
Verify William Andrew Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D31205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Andrew Marks among 1,912 family medicine physician records in Maryland
William Andrew Marks, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 42% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 family medicine physician records list a practice address in Columbia
They are 67 of the 6,690 NPPES records with a practice address in Columbia, and 1,912 family medicine physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,912 in Maryland → Every provider in Columbia → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sarah Arnold, MDColumbia, MD 210441447222542
- Francis Bruno, M.D.Columbia, MD 210441063486702
- Mohina Chhabra, M.D.Columbia, MD 210441427261171
- Josephine Dennis, M.D.Columbia, MD 210441992803415
- Lindiwe Greenwood, MDColumbia, MD 210441932147881
- Zeenat Hashmi, M.D.Columbia, MD 210441154512549
- Malini Joel, MDColumbia, MD 210441316053382
- Delbert Morales, M.D.Columbia, MD 210441851581698
Common questions
What is William Andrew Marks, M.D.'s NPI number?
William Andrew Marks, M.D.'s National Provider Identifier (NPI) is 1164579090, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Andrew Marks, M.D. located?
The NPPES record lists a practice address at 5900 Cedar LN, Columbia, MD, 21044. Phone: (443) 718-4067. Providers update this record themselves, so call before visiting.
How can I verify William Andrew Marks, M.D.'s license?
NPPES lists Maryland license number D31205, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.