Mark John Baskerville, M.D.
Emergency Medicine · Columbia, MD
At a glance
5755 Cedar Ln, Columbia, MD 21044-2912
NPPES record updated Mar 9, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
5755 Cedar LnColumbia, MD 21044-2912
Additional reported practice locations
8600 Old Georgetown RdBethesda, MD 208141422
Phone: 3018967610
Fax: 3018967626 1255 Hilyard St
Eugene, OR 974013718
Phone: 5416867300
Education & affiliations
- Medical / professional school
- Johns Hopkins University School Of Medicine
- Graduation year
- 1995
- CMS specialties
- Addiction Medicine · Anesthesiology · Critical Care (Intensivists) · Emergency Medicine · Internal Medicine
Practice groups
- Johns Hopkins Community Physicians, Inc
- Johns Hopkins University
- University Anesthesiology Associates Llc
Reported hospital affiliations
- Johns Hopkins Howard County Medical Center Columbia, MD
- Ohsu Hospital And Clinics Portland, OR
- Suburban Hospital Bethesda, MD
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Consulting fee | $1,140.00 |
Reporting companies
| Company | Amount |
|---|---|
| MASIMO CORPORATION | $1,140.00 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Emergency Medicine
- Taxonomy code
- 207P00000X
- Enumeration date
- Apr 18, 2006
- Record updated
- Mar 9, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207L00000X
License reported: D54897 MD
207L00000X
License reported: MD23614 OR
207P00000X · Primary
License reported: D0054897 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
5755 Cedar LnColumbia, MD 21044-2912
- Phone
- (410) 884-8688
Mailing address
6201 GREENLEIGH AVEMIDDLE RIVER, MD 212202004
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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