DR. ALLEN JAY BLAIVAS DO
NPI 1104830397
Internal Medicine - Pulmonary Disease in New York, NY
About Dr. Allen Jay Blaivas Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALLEN JAY BLAIVAS DO (NPI 1104830397) is an individual pulmonary disease provider in New York, New York, licensed in New Jersey (25MB07222400) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Hackensack University Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Allen Jay Blaivas Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Allen Blaivas reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- Also billed through NPI 1518228550 (New York)
- 329 clinicians in this Medicare group
New York, NY 10024
- Reassigned Medicare billing, New York enrollment
- 75 clinicians in this Medicare group
Cliffside Park, NJ 07010
- Reassigned Medicare billing, New Jersey enrollment
- 2 clinicians in this Medicare group
Elizabeth, NJ 07202
- Reassigned Medicare billing, New Jersey enrollment
- 1,894 clinicians in this Medicare group
Red Bank, NJ 07701
- Reassigned Medicare billing, New Jersey enrollment
- 2,844 clinicians in this Medicare group
Lakewood, NJ 08701
- Reassigned Medicare billing, New Jersey enrollment
- 149 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hackensack University Medical Center
Acute Care Hospitals · Hackensack, NJCommunity Medical Center
Acute Care Hospitals · Toms River, NJMonmouth Medical Center-Southern Campus
Acute Care Hospitals · Lakewood, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10025 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10025
NEW YORK, NY 10025
NEW YORK, NY 10025
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Allen Blaivas's NPI number?
The NPI number for Allen Blaivas is 1104830397. It was assigned to this individual provider in the NPPES registry on July 27, 2006.
Where is Allen Blaivas located?
Allen Blaivas practices at 1111 Amsterdam Ave, New York, NY 10025. The listed phone number is (212) 523-4000.
What is Allen Blaivas's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Allen Blaivas enrolled in Medicare?
Yes. Allen Blaivas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Allen Blaivas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allen Blaivas reassigns Medicare benefits to 6 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY), Progressive Care Medical Group, PLLC (New York, NY), Bloom Medical Group Nj PC (Cliffside Park, NJ), Barnabas Health Medical Group PC (Elizabeth, NJ), Hackensack Meridian Health Medical Group - Specialty Care PC (Red Bank, NJ) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Allen Blaivas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Allen Blaivas accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Allen Blaivas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Allen Blaivas affiliated with any hospitals?
According to CMS data, Allen Blaivas is affiliated with Hackensack University Medical Center, Community Medical Center and Monmouth Medical Center-Southern Campus.
When was this NPI record last updated?
The NPPES record for Allen Blaivas was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Allen Jay Blaivas, DO · NPI 1104830397
Pulmonary Disease physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 27, 2006.
## Identity
- **NPI:** 1104830397 (Entity type: Individual)
- **Enumerated:** July 27, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 25MB07222400 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1111 AMSTERDAM AVE, New York, NY 10025-1716
- **Phone:** (212) 523-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Icahn School Of Medicine At Mount Sinai (NPI 1215488127, New York, NY); Progressive Care Medical Group, PLLC (NPI 1295263796, New York, NY); Bloom Medical Group Nj PC (NPI 1396603817, Cliffside Park, NJ); Barnabas Health Medical Group PC (NPI 1841557246, Elizabeth, NJ); Hackensack Meridian Health Medical Group - Specialty Care PC (NPI 1215989249, Red Bank, NJ); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 1999
## Record status
- **NPPES last updated:** October 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1104830397) · Data from the CMS NPPES public registry.