William Mak, DO - Medicare Pediatrics in Stony Brook, NY

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William Mak, DO is a medicare enrolled "Pediatrics" physician in Stony Brook, New York. His current practice location is Suny At Stony Brook Department Of Pediatrics, Hsc T-11 / 040, Stony Brook, New York. You can reach out to his office (for appointments etc.) via phone at (631) 444-2020.

William Mak is licensed to practice in New York (license number 279661) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1811256258.

Contact Information

William Mak, DO
Suny At Stony Brook Department Of Pediatrics, Hsc T-11 / 040,
Stony Brook, NY 11794-8111
(631) 444-2020
(631) 444-2894

Map and Direction




Physician's Profile

Full NameWilliam Mak
GenderMale
SpecialityPediatrics
LocationSuny At Stony Brook Department Of Pediatrics, Stony Brook, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1811256258
  • Provider Enumeration Date: 05/04/2012
  • Last Update Date: 09/16/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 6204135049
  • Enrollment ID: I20161028000401

Medical Identifiers

Medical identifiers for William Mak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811256258NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics 279661 (New York)Primary

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. William Mak allows following entities to bill medicare on his behalf.
Entity NameRochester General Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356412712
PECOS PAC ID: 0244149474
Enrollment ID: O20031121000644
Entity NameNewark Wayne Community Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770671182
PECOS PAC ID: 0446154199
Enrollment ID: O20031212000722
Entity NameClifton Springs Sanitarium Co
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366505463
PECOS PAC ID: 5092704809
Enrollment ID: O20040525000569
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. William Mak 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
William Mak, DO
Suny At Stony Brook Department Of Pediatrics, Hsc T-11 / 040,
Stony Brook, NY 11794-8111

Ph: (631) 444-2020		William Mak, DO
Suny At Stony Brook Department Of Pediatrics, Hsc T-11 / 040,
Stony Brook, NY 11794-8111

Ph: (631) 444-2020

Reviews and Comments


Pediatrics Doctors in Stony Brook, NY

Dr. Mireya Garcia, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: University Hospital, L5, Stony Brook, NY 11794
Phone: 631-444-3429    
Dr. Jason Halegoua, PHD, MD, MBA
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 207 Hallock Rd Ste 106, Stony Brook, NY 11790
Phone: 631-675-9777    Fax: 631-675-9778
Dr. Christy Anne Beneri, DO
Pediatrics
Medicare: Accepting Medicare Assignments
Practice Location: Hsc Suny Stony Brook, Department Of Pediatrics Hsc T-11, Stony Brook, NY 11794
Phone: 631-444-7992    Fax: 631-444-7292
Pianpian Wu, DO
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 101 Nicolls Rd, Stony Brook, NY 11794
Phone: 631-444-5437    
Brittani Rose Mannix, NNP-BC
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 101 Nicolls Rd, Stony Brook, NY 11794
Phone: 631-444-2000    
Kathleen Doobinin, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: Department Of Pediatrics, Hsc T-11-020, Stony Brook, NY 11794
Phone: 631-444-2710    
Dr. Stephanie Anne Tischler, D.O.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 2500 Nesconset Hwy Bldg 14, Stony Brook, NY 11790
Phone: 631-689-6226    Fax: 631-675-0736

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).

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