Quick answers
- Where does Holly Duncan see patients?
- Medicare's clinician data lists 3 practice locations, including Columbia, MD, Lutherville Timonium, MD and Glen Burnie, MD. Call before your visit to confirm the address.
- What is Holly Duncan's specialty?
- Medicare lists Qualified Audiologist as the primary specialty.
- Does Holly Duncan accept Medicare assignment?
- Yes. Medicare's clinician data says Holly Duncan 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 Holly Duncan?
- (410) 997-7979, as listed in official Medicare / NPI Registry data.
- What is Holly Duncan's NPI number?
- 1902215502. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Holly Duncan is enrolled with Medicare (CMS data updated 2026-10-02).
- 10710 Charter Dr, Suite 400Columbia, MD 21044 (410) 997‑7979
- 1300 York Rd, Suite 30dLutherville Timonium, MD 21093 (443) 275‑1337
- 802 Landmark Dr, Suite 119Glen Burnie, MD 21061 (410) 760‑8840
Group practices
Medicare enrollment lists Holly Duncan as a member of this group (CMS data updated 2026-10-02).
- Johns Hopkins Regional Physicians LLC84 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Columbia
Clinicians with the same Medicare primary specialty in Columbia, MD — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902215502 |
| 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
- 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