Quick answers
- Which hospitals does Gerard E. Mullin work at?
- Medicare's official clinician data lists Gerard E. Mullin at 2 hospitals: Johns Hopkins Bayview Medical Center and The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gerard E. Mullin see patients?
- Medicare's clinician data lists 1 practice location in Baltimore, MD. Call before your visit to confirm the address.
- What is Gerard E. Mullin's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Gerard E. Mullin accept Medicare assignment?
- Medicare's clinician data says Gerard E. Mullin may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Gerard E. Mullin offer telehealth?
- Medicare's clinician data says Gerard E. Mullin offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gerard E. Mullin?
- (410) 955-5000, as listed in official Medicare / NPI Registry data.
- What is Gerard E. Mullin's NPI number?
- 1891746996. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gerard E. Mullin works
Medicare's Facility Affiliation Data lists Gerard E. Mullin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210029
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Gerard E. Mullin is enrolled with Medicare (CMS data updated 2026-10-02).
- 600 N Wolf StBaltimore, MD 21287 (410) 955‑5000
Group practices
Medicare enrollment lists Gerard E. Mullin as a member of this group (CMS data updated 2026-10-02).
- Johns Hopkins University2,909 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1891746996 |
| 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