John Richard Gavencak, MD
Allergy Physician · East Rockaway, NY
John Richard Gavencak, MD is an allergy physician with a practice address in East Rockaway, New York, and NPI 1821089392, issued on Nov 2, 2005. Check the license (New York 124874, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Richard Gavencak
- Credential
- MD
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 124874 NY
Self-reported in NPPES; status is on the state search - Practice location
- 400 Atlantic Ave, East Rockaway, NY 11518
- Phone
- (516) 599-2732
- Enumerated
- Nov 2, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (516) 593-2075
- Medicare enrollment
- Enrolled (PECOS I20060503000348); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1974
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 109 in New York → Look up another NPI →
Verify John Richard Gavencak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 124874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- New York Internal Medicine PCWhitestone, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Richard Gavencak among 109 allergy physician records in New York
John Richard Gavencak, MD is one of 109 allergy physician records with a practice address in New York. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 73% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1974 · median 1990 among the 58 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in New York
There are 109 allergy physician records in New York.
All 109 in New York → Every provider in East Rockaway → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Marc Sicklick, MDCedarhurst, NY 115161538163423
- Sumeet SandhuGarden City, NY 115301982058657
- David Frankel, MDMineola, NY 115011699205112
- Marc Braunstein, MDHewlett, NY 115571215358908
- Muataz Jaber, MDRockville Centre, NY 115701134123854
- Pauline Fani, MDRoslyn, NY 115761750580726
- Sherry Arbisser, MDJamaica, NY 114321508992371
- Jerome Wildes, M.DHoward Beach, NY 114141619961539
Common questions
What is John Richard Gavencak, MD's NPI number?
John Richard Gavencak, MD's National Provider Identifier (NPI) is 1821089392, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Richard Gavencak, MD located?
The NPPES record lists a practice address at 400 Atlantic Ave, East Rockaway, NY, 11518. Phone: (516) 599-2732. Providers update this record themselves, so call before visiting.
How can I verify John Richard Gavencak, MD's license?
NPPES lists New York license number 124874, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.