Quick answers
- Which hospitals does Mark O. Owolabi work at?
- Medicare's official clinician data lists Mark O. Owolabi at 2 hospitals: MedStar Southern Maryland Hospital Center and MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark O. Owolabi see patients?
- Medicare's clinician data lists 3 practice locations, including Washington, DC, Colmar Manor, MD and Clinton, MD. Call before your visit to confirm the address.
- What is Mark O. Owolabi's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Mark O. Owolabi accept Medicare assignment?
- Yes. Medicare's clinician data says Mark O. Owolabi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Mark O. Owolabi offer telehealth?
- Medicare's clinician data says Mark O. Owolabi offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark O. Owolabi?
- (202) 429-2401, as listed in official Medicare / NPI Registry data.
- What is Mark O. Owolabi's NPI number?
- 1578945507. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark O. Owolabi works
Medicare's Facility Affiliation Data lists Mark O. Owolabi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · CCN 210062
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Mark O. Owolabi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 4151 Bladensburg RdColmar Manor, MD 20722 (301) 699‑7700
- 7503 Surratts RdClinton, MD 20735 (301) 868‑8000
Group practices
Medicare enrollment lists Mark O. Owolabi as a member of this group (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Family Practiceprimary
Find other Family Practice doctors in District of Columbia →
Other family doctors in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Brody School Of Medicine At East Carolina University |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578945507 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians