Quick answers
- Which hospitals does David Ni work at?
- Medicare's official clinician data lists David Ni at 2 hospitals: Johns Hopkins Howard County Medical Center and Suburban Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David Ni see patients?
- Medicare's clinician data lists 4 practice locations, including Baltimore, MD, Laurel, MD and Columbia, MD. Call before your visit to confirm the address.
- What is David Ni's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does David Ni accept Medicare assignment?
- Yes. Medicare's clinician data says David Ni 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 David Ni?
- (410) 522-9800, as listed in official Medicare / NPI Registry data.
- What is David Ni's NPI number?
- 1821255662. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David Ni works
Medicare's Facility Affiliation Data lists David Ni at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · CCN 210048
- Suburban HospitalBethesda, MD · Acute Care Hospital · CCN 210022
Practice locations
Addresses where David Ni is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 E Eager St, E Baltimore Med CtrBaltimore, MD 21202 (410) 522‑9800
- 14207 Park Ctr Dr, Suite 102Laurel, MD 20707 (301) 604‑5254
- 5755 Cedar LnColumbia, MD 21044 (410) 884‑4644
- 8600 Old Georgetown RdBethesda, MD 20814
Group practices
Medicare enrollment lists David Ni as a member of this group (CMS data updated 2026-10-02).
- Johns Hopkins Community Physicians, Inc763 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821255662 |
| 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