Quick answers
- Which hospitals does Michael J. Dannenberg Iii work at?
- Medicare's official clinician data lists Michael J. Dannenberg Iii at 1 hospital: Ns/Lij HS Huntington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Dannenberg Iii see patients?
- Medicare's clinician data lists 6 practice locations, including Huntington, NY and Manhasset, NY. Call before your visit to confirm the address.
- What is Michael J. Dannenberg Iii's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Michael J. Dannenberg Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Dannenberg Iii 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 Michael J. Dannenberg Iii?
- (631) 351-2356, as listed in official Medicare / NPI Registry data.
- What is Michael J. Dannenberg Iii's NPI number?
- 1255347779. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Dannenberg Iii works
Medicare's Facility Affiliation Data lists Michael J. Dannenberg Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ns/Lij HS Huntington HospitalHuntington, NY · Acute Care Hospital · CCN 330045
Practice locations
Addresses where Michael J. Dannenberg Iii is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 270 Park AveHuntington, NY 11743 (631) 351‑2356
- 270 Park Ave, Suite 1Huntington, NY 11743 (631) 351‑2219
- 300 Community DrManhasset, NY 11030
- 300 Community Dr LlManhasset, NY 11030 (516) 562‑2229
- 330 Community DrManhasset, NY 11030 (516) 708‑2550
Group practices
Medicare enrollment lists Michael J. Dannenberg Iii as a member of this group (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Huntington
Clinicians with the same Medicare primary specialty in Huntington, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255347779 |
| 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