Quick answers
- Which hospitals does Mark J. Mullen work at?
- Medicare's official clinician data lists Mark J. Mullen at 3 hospitals: Holy Redeemer Hospital and Medical Center, Hospital of Univ of Pennsylvania and St Mary Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Mullen see patients?
- Medicare's clinician data lists 3 practice locations, including Feasterville Trevose, PA, Philadelphia, PA and Richboro, PA. Call before your visit to confirm the address.
- What is Mark J. Mullen's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mark J. Mullen accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Mullen 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.
- Does Mark J. Mullen offer telehealth?
- Medicare's clinician data says Mark J. Mullen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark J. Mullen?
- (215) 436-1420, as listed in official Medicare / NPI Registry data.
- What is Mark J. Mullen's NPI number?
- 1679581870. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark J. Mullen works
Medicare's Facility Affiliation Data lists Mark J. Mullen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holy Redeemer Hospital and Medical CenterMeadowbrook, PA · Acute Care Hospital · CCN 390097
- Hospital of Univ of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- St Mary Medical CenterLanghorne, PA · Acute Care Hospital · CCN 390258
Practice locations
Addresses where Mark J. Mullen is enrolled with Medicare (CMS data updated 2026-10-02).
- 23 Bustleton PikeFeasterville Trevose, PA 19053
- 8580 Verree RdPhiladelphia, PA 19111 (215) 436‑1420
- 910 2nd St PikeRichboro, PA 18954
Group practices
Medicare enrollment lists Mark J. Mullen as a member of this group (CMS data updated 2026-10-02).
- HR Physician Services185 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Feasterville Trevose
Clinicians with the same Medicare primary specialty in Feasterville Trevose, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1679581870 |
| 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