Quick answers
- Which hospitals does Derek A. Ballas work at?
- Medicare's official clinician data lists Derek A. Ballas at 1 hospital: Luminis Health Anne Arundel Medical Center, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Derek A. Ballas see patients?
- Medicare's clinician data lists 3 practice locations, including Annapolis, MD, Bowie, MD and Greenbelt, MD. Call before your visit to confirm the address.
- What is Derek A. Ballas's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Derek A. Ballas accept Medicare assignment?
- Yes. Medicare's clinician data says Derek A. Ballas 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 Derek A. Ballas?
- (410) 224-1133, as listed in official Medicare / NPI Registry data.
- What is Derek A. Ballas's NPI number?
- 1164789780. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Derek A. Ballas works
Medicare's Facility Affiliation Data lists Derek A. Ballas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Luminis Health Anne Arundel Medical Center, IncAnnapolis, MD · Acute Care Hospital · CCN 210023
Practice locations
Addresses where Derek A. Ballas is enrolled with Medicare (CMS data updated 2026-10-02).
- 2000 Medical Pkwy, Suite 309Annapolis, MD 21401 (410) 224‑1133
- 4175 N Hanson Ct, Suite 203Bowie, MD 20716 (410) 224‑1133
- 7501 Greenway Ctr Dr, Suite 910Greenbelt, MD 20770 (301) 982‑0657
Group practices
Medicare enrollment lists Derek A. Ballas as a member of this group (CMS data updated 2026-10-02).
- Luminis Health Medical Group, LLC539 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Annapolis
Clinicians with the same Medicare primary specialty in Annapolis, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia School Of Osteopathic Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164789780 |
| 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