Quick answers
- Which hospitals does Allen J. Blaivas work at?
- Medicare's official clinician data lists Allen J. Blaivas at 3 hospitals: Community Medical Center, Hackensack University Medical Center and Monmouth Medical Center-Southern Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Allen J. Blaivas see patients?
- Medicare's clinician data lists 3 practice locations, including New York, NY, Lakewood, NJ and Hackensack, NJ. Call before your visit to confirm the address.
- What is Allen J. Blaivas's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Pulmonary Disease and Sleep Medicine.
- Does Allen J. Blaivas accept Medicare assignment?
- Yes. Medicare's clinician data says Allen J. Blaivas 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 Allen J. Blaivas?
- (646) 505-3500, as listed in official Medicare / NPI Registry data.
- What is Allen J. Blaivas's NPI number?
- 1104830397. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allen J. Blaivas works
Medicare's Facility Affiliation Data lists Allen J. Blaivas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Community Medical CenterToms River, NJ · Acute Care Hospital · CCN 310041
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · CCN 310001
- Monmouth Medical Center-Southern CampusLakewood, NJ · Acute Care Hospital · CCN 310084
Practice locations
Addresses where Allen J. Blaivas is enrolled with Medicare (CMS data updated 2026-10-02).
- 150 Riverside DrNew York, NY 10024 (646) 505‑3500
- 1771 Madison AveLakewood, NJ 08701 (732) 364‑2144
- 30 Prospect AveHackensack, NJ 07601 (551) 996‑5045
Group practices
Medicare enrollment lists Allen J. Blaivas as a member of these groups (CMS data updated 2026-10-02).
- Hackensack Meridian Health Medical Group - Specialty Care PC1,922 clinicians in the group
- Lakewood Resource and Referral Center Inc108 clinicians in the group
- Progressive Care Medical Group PLLC49 clinicians in the group
Specialties
- Internal Medicineprimary
- Pulmonary Diseasealso
- Sleep Medicinealso
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104830397 |
| 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