Gregorio J. Guillen Md, Pc - Medicare Primary Care in Perth Amboy, NJ

Gregorio J. Guillen Md, Pc is a medicare enrolled primary clinic (Internal Medicine) in Perth Amboy, New Jersey. The current practice location for Gregorio J. Guillen Md, Pc is 400 State St., Suite 2, Perth Amboy, New Jersey. For appointments, you can reach them via phone at (732) 442-6020. The mailing address for Gregorio J. Guillen Md, Pc is Po Box 1068, Perth Amboy, New Jersey and phone number is (732) 442-6020.

Gregorio J. Guillen Md, Pc is licensed to practice in New Jersey (license number MA56159). The clinic also participates in the medicare program and its NPI number is 1518052950. This medical practice accepts medicare insurance (which means this clinic accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance). However, please confirm if they accept your insurance at (732) 442-6020.

Contact Information

Gregorio J. Guillen Md, Pc
400 State St.
Suite 2
Perth Amboy
NJ 08861
(732) 442-6020
(732) 442-1995

Map and Direction


Primary Care Clinic Profile

Full NameGregorio J. Guillen Md, Pc
SpecialityInternal Medicine
Location400 State St., Perth Amboy, New Jersey
Authorized Official Name and PositionGregorio J. Guillen (PRESIDENT)
Authorized Official Contact7324426020
Accepts Medicare InsuranceYes. This clinic participates in medicare program and accept medicare insurance.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Gregorio J. Guillen Md, Pc
Po Box 1068
Perth Amboy
NJ 08862-1068

Ph: (732) 442-6020
Gregorio J. Guillen Md, Pc
400 State St.
Suite 2
Perth Amboy
NJ 08861

Ph: (732) 442-6020

NPI Details:

NPI Number1518052950
Provider Enumeration Date10/03/2006
Last Update Date09/11/2013

Medicare PECOS Information:

Medicare PECOS PAC ID0446202006
Medicare Enrollment IDO20050211000667

Medical Identifiers

Medical identifiers for Gregorio J. Guillen Md, Pc such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1518052950NPI-NPPES
6523706MedicaidNJ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MA56159 (New Jersey)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Gregorio J. Guillen Md, Pc acts as a billing entity for following providers:
Provider NameGregorio J Guillen
Provider TypePractitioner - Internal Medicine
Provider IdentifiersNPI Number: 1538252226
PECOS PAC ID: 5991756926
Enrollment ID: I20050207000626
Provider NameMiryam L Arjona
Provider TypePractitioner - Clinical Social Worker
Provider IdentifiersNPI Number: 1457665614
PECOS PAC ID: 2668601519
Enrollment ID: I20140219000102
Provider NameTara Olsen
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1235827213
PECOS PAC ID: 9537523733
Enrollment ID: I20231025000018

Reviews and Comments


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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.