Quick answers
- Which hospitals does Maw N. Oo work at?
- Medicare's official clinician data lists Maw N. Oo at 2 hospitals: Umd Upper Chesapeake Medical Center and University of Maryland Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maw N. Oo see patients?
- Medicare's clinician data lists 1 practice location in Bel Air, MD. Call before your visit to confirm the address.
- What is Maw N. Oo's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Maw N. Oo accept Medicare assignment?
- Yes. Medicare's clinician data says Maw N. Oo 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.
- What is the phone number for Maw N. Oo?
- (443) 643-1000, as listed in official Medicare / NPI Registry data.
- What is Maw N. Oo's NPI number?
- 1841260569. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maw N. Oo works
Medicare's Facility Affiliation Data lists Maw N. Oo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Umd Upper Chesapeake Medical CenterBel Air, MD · Acute Care Hospital · CCN 210049
- University of Maryland Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210002
Practice locations
Addresses where Maw N. Oo is enrolled with Medicare (CMS data updated 2026-10-02).
- 500 Upper Chesapeake DrBel Air, MD 21014 (443) 643‑1000
Group practices
Medicare enrollment lists Maw N. Oo as a member of this group (CMS data updated 2026-10-02).
- Adfinitas Health at Upper Chesapeake LLC78 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Bel Air
Clinicians with the same Medicare primary specialty in Bel Air, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841260569 |
| 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