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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN RICHARD GAVENCAK MD
NPI 1821089392
Allergy & Immunology - Allergy in East Rockaway, NY

Active since November 02, 2005PECOS Enrolled
400 ATLANTIC AVE, EAST ROCKAWAY, NY 11518(516) 599-2732(516) 593-2075 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John Richard Gavencak Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN RICHARD GAVENCAK MD (NPI 1821089392) is an individual allergy provider in East Rockaway, New York, licensed in New York (124874) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (1974).

NPPES Registry Identity

NPI1821089392
Entity TypeIndividualMale
Primary Taxonomy207KA0200X
Provider Legal NameDR. JOHN RICHARD GAVENCAKCredential: MD
Location Address400 ATLANTIC AVEEast Rockaway, NY 11518-1433
Mailing Address400 Atlantic AveEast Rockaway, NY 11518-1433 · (516) 599-2732 · Fax (516) 593-2075
Phone(516) 599-2732
Fax(516) 593-2075
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1974
Enumeration DateNovember 2, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1821089392 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in NY · 124874
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
400 ATLANTIC AVE, East Rockaway, NY 11518
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John Richard Gavencak Md 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.

PECOS PAC ID9133139256
PECOS Enrollment IDI20060503000348
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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 John Gavencak's NPI number?

The NPI number for John Gavencak is 1821089392. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Where is John Gavencak located?

John Gavencak practices at 400 Atlantic Ave, East Rockaway, NY 11518. The listed phone number is (516) 599-2732.

What is John Gavencak's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is John Gavencak enrolled in Medicare?

Yes. John Gavencak 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.

When was this NPI record last updated?

The NPPES record for John Gavencak was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 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.