John Nick Chafos, MD - Medicare Family Practice in Green Brook, NJ

John Nick Chafos, MD is a medicare enrolled "Internal Medicine" physician in Green Brook, New Jersey. He went to Tufts University School Of Medicine and graduated in 1988 and has 36 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Family Care Pa and his current practice location is 257 Rt 22 East, Green Brook, New Jersey. You can reach out to his office (for appointments etc.) via phone at (732) 968-8832.

John Nick Chafos is licensed to practice in New Jersey (license number 25MA05399400) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1871673830.

Contact Information

John Nick Chafos, MD
257 Rt 22 East,
Green Brook, NJ 08812
(732) 968-8832
(732) 968-2187

Map and Direction




Physician's Profile

Full NameJohn Nick Chafos
GenderMale
SpecialityFamily Practice
Experience36 Years
Location257 Rt 22 East, Green Brook, New Jersey
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • John Nick Chafos attended and graduated from Tufts University School Of Medicine in 1988
  NPI Data:
  • NPI Number: 1871673830
  • Provider Enumeration Date: 10/16/2006
  • Last Update Date: 03/29/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 3870538663
  • Enrollment ID: I20050622000792

Medical Identifiers

Medical identifiers for John Nick Chafos such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1871673830NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 25MA05399400 (New Jersey)Secondary
207R00000XInternal Medicine 25MA05399400 (New Jersey)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Family Care Pa16585840087

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. John Nick Chafos allows following entities to bill medicare on his behalf.
Entity NameFamily Care Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275619413
PECOS PAC ID: 1658584008
Enrollment ID: O20120620000110
Entity NameRobert Wood Johnson Physician Enterprise
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245587922
PECOS PAC ID: 5597917633
Enrollment ID: O20121218000345

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. John Nick Chafos 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
John Nick Chafos, MD
257 Rt 22 East,
Green Brook, NJ 08812

Ph: (732) 968-8832
John Nick Chafos, MD
257 Rt 22 East,
Green Brook, NJ 08812

Ph: (732) 968-8832

Reviews and Comments


Internal Medicine Doctors in Green Brook, NJ

Joseph Atanasio, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 257 Rt. 22 East, Green Brook, NJ 08812
Phone: 732-968-8832    Fax: 732-968-2187
Dr. Suzan Y Khalil, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 275 Greenbrook Rd, Green Brook, NJ 08812
Phone: 732-968-2401    Fax: 732-968-8125
Dr. Anandan Devarajan, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 230 W End Ave, Green Brook, NJ 08812
Phone: 908-251-5114    Fax: 201-437-2419
Yoram Sharon, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1005 North Washington Ave, Green Brook, NJ 08812
Phone: 732-968-8900    Fax: 732-968-4609
Syed Fahim Ahmed, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1005 North Washington Ave, Green Brook, NJ 08812
Phone: 732-968-8900    Fax: 732-968-4609

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.