Catherine Corina Violet Gerontis, MD - Medicare Ophthalmology in Commack, NY

  1. Home
  2. Ophthalmology
  3. NY
  4. Commack
Catherine Corina Violet Gerontis, MD is a medicare enrolled "Ophthalmology" physician in Commack, New York. Her current practice location is 58 Vanderbilt Motor Pkwy Ste 300, Commack, New York. You can reach out to her office (for appointments etc.) via phone at (631) 439-5440.

Catherine Corina Violet Gerontis is licensed to practice in New York (license number 188154) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1477553253.

Contact Information

Catherine Corina Violet Gerontis, MD
58 Vanderbilt Motor Pkwy Ste 300,
Commack, NY 11725-5724
(631) 439-5440
Not Available

Map and Direction




Physician's Profile

Full NameCatherine Corina Violet Gerontis
GenderFemale
SpecialityOphthalmology
Location58 Vanderbilt Motor Pkwy Ste 300, Commack, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1477553253
  • Provider Enumeration Date: 07/22/2005
  • Last Update Date: 04/20/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 8325030299
  • Enrollment ID: I20040331001225

Medical Identifiers

Medical identifiers for Catherine Corina Violet Gerontis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1477553253NPI-NPPES
48Z811OtherBLUE CROSS/CHILD
113547507OtherEMPIRE
113547507OtherGREAT WEST
188154A27OtherHEALTHFIRST
2C8244OtherHEALTH NET
112658697OtherJJ NEW/USI
113547507OtherCIGNA PPO
113547507OtherISLAND GROUP
2436110OtherAETNA
31160POtherHIP HEALTH CARE PARTNERS
113547507OtherBEECH TREE
8209571002OtherCIGNA HMO
188154A27OtherHEALTHFIRST CHP
0401751OtherGHI
112658697OtherFIRST HEALTH
27626OtherANTHEM
GC8154OtherATLANTIS
31160POtherHIP

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 188154 (New York)Primary
207WX0110XOphthalmology - Pediatric Ophthalmology And Strabismus Specialist 188154 (New York)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Catherine Corina Violet Gerontis allows following entities to bill medicare on her behalf.
Entity NameChs Physician Partners Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164585725
PECOS PAC ID: 7618955667
Enrollment ID: O20040708000027
Entity NameNorth Shore - Lij Medical Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053688572
PECOS PAC ID: 3375701568
Enrollment ID: O20120220000262

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Catherine Corina Violet Gerontis is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Catherine Corina Violet Gerontis, MD
Po Box 595,
Commack, NY 11725-0595

Ph: (631) 439-0946		Catherine Corina Violet Gerontis, MD
58 Vanderbilt Motor Pkwy Ste 300,
Commack, NY 11725-5724

Ph: (631) 439-5440

Reviews and Comments


Ophthalmology Doctors in Commack, NY

Jacqueline Lenoci, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 500 Commack Rd, Commack, NY 11725
Phone: 631-444-4090    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.