Dr Mason Chacko, MD - Medicare Psychiatry in Stony Brook, NY

Dr Mason Chacko, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Stony Brook, New York. He graduated from medical school in 2005 and has 19 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Stony Brook Psychiatric Associates University Faculty Practice Corpor and his current practice location is 101 Nicolls Rd, Stony Brook, New York. You can reach out to his office (for appointments etc.) via phone at (631) 444-3604.

Dr Mason Chacko is licensed to practice in New York (license number 258527) 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 1932417706.

Contact Information

Dr Mason Chacko, MD
101 Nicolls Rd,
Stony Brook, NY 11794-8408
(631) 444-3604
Not Available

Map and Direction




Physician's Profile

Full NameDr Mason Chacko
GenderMale
SpecialityPsychiatry
Experience19 Years
Location101 Nicolls Rd, Stony Brook, New York
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:
  • Dr Mason Chacko graduated from medical school in 2005
  NPI Data:
  • NPI Number: 1932417706
  • Provider Enumeration Date: 09/15/2010
  • Last Update Date: 02/05/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 3173703956
  • Enrollment ID: I20110210001082

Medical Identifiers

Medical identifiers for Dr Mason Chacko such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1932417706NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 258527 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Suny/stony Brook University HospitalStony brook, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Stony Brook Psychiatric Associates University Faculty Practice Corpor731583673179

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. Dr Mason Chacko allows following entities to bill medicare on his behalf.
Entity NameStony Brook Psychiatric Associates University Faculty Practice Corpor
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437105905
PECOS PAC ID: 7315836731
Enrollment ID: O20040313000174
Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20081202000185
Entity NameNew York University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285826438
PECOS PAC ID: 1355232422
Enrollment ID: O20090822000026
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. Dr Mason Chacko 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
Dr Mason Chacko, MD
Po Box 1559,
Stony Brook, NY 11790-0989

Ph: (631) 444-3406
Dr Mason Chacko, MD
101 Nicolls Rd,
Stony Brook, NY 11794-8408

Ph: (631) 444-3604

Reviews and Comments


Psychiatry & Neurology Doctors in Stony Brook, NY

Dr. Maged Sobhy Soliman, M.D.
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: Child And Adolescent Psychiatry Outpatient Department, 169 Putnam Hall, Stony Brook, NY 11794
Phone: 631-632-8850    
Dr. Adeeb Yacoub, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: Health Sciences Center -, T10, Stony Brook, NY 11794
Phone: 631-444-6050    
Dr. Shennan Aibel Weiss, M.D., PH.D.
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 100 Nicolls Rd Rm 20, Stony Brook, NY 11794
Phone: 631-444-2599    
Kamil Stefanowski, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 101 Nicolls Rd, Stony Brook, NY 11794
Phone: 631-444-2599    
Dr. Brian Ghezelaiagh, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2500 Nesconset Hwy Bldg 17c, Stony Brook, NY 11790
Phone: 631-210-6305    Fax: 631-292-7376
Dr. Mark Sedler, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: Health Sciences Center - T10, Stony Brook, NY 11790
Phone: 631-444-2571    
Dr. Zoya Popivker,
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: Department Of Psychiatry, Putnam Hall, Suny At Stony Brook, Stony Brook, NY 11794
Phone: 631-632-8850    Fax: 631-632-4448

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.