Patrick A Siaw, MD - Medicare Internal Medicine in Buffalo, NY

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Patrick A Siaw, MD is a medicare enrolled "Internal Medicine" physician in Buffalo, New York. His current practice location is 2157 Main St, Buffalo, New York. You can reach out to his office (for appointments etc.) via phone at (716) 862-1984.

Patrick A Siaw is licensed to practice in New York (license number 211163) 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 1922039213.

Contact Information

Patrick A Siaw, MD
2157 Main St,
Buffalo, NY 14214-2648
(716) 862-1984
(716) 862-1891

Map and Direction




Physician's Profile

Full NamePatrick A Siaw
GenderMale
SpecialityInternal Medicine
Location2157 Main St, Buffalo, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1922039213
  • Provider Enumeration Date: 07/05/2006
  • Last Update Date: 12/07/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 1355329996
  • Enrollment ID: I20040710000232

Medical Identifiers

Medical identifiers for Patrick A Siaw such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922039213NPI-NPPES
00010370101OtherNYUNIVERA
000525325005OtherNYBLUE CROSS OF WNY
0410363OtherNYINDEPENDENT HEALTH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 211163 (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. Patrick A Siaw allows following entities to bill medicare on his behalf.
Entity NameBlt Medical Group Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386671816
PECOS PAC ID: 5496750291
Enrollment ID: O20060929000384
Entity NameCare Connect Medical P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457032328
PECOS PAC ID: 0749641736
Enrollment ID: O20230808000676
Entity NamePartners Medical Group Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184305153
PECOS PAC ID: 5092155937
Enrollment ID: O20240425003145

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. Patrick A Siaw 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
Patrick A Siaw, MD
2157 Main St,
Buffalo, NY 14214-2648

Ph: (716) 862-1984		Patrick A Siaw, MD
2157 Main St,
Buffalo, NY 14214-2648

Ph: (716) 862-1984

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.