William L Hiser, MD - Medicare Cardiovascular Disease (cardiology) in Springfield, MA

William L Hiser, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Springfield, Massachusetts. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 1993 and has 31 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Baystate Medical Practices Inc and his current practice location is 3300 Main St, 2nd Fl Suite A, Springfield, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (413) 794-2273.

William L Hiser is licensed to practice in Massachusetts (license number 159655) 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 1366481459.

Contact Information

William L Hiser, MD
3300 Main St, 2nd Fl Suite A,
Springfield, MA 01107-1112
(413) 794-2273
(413) 794-0198

Map and Direction




Physician's Profile

Full NameWilliam L Hiser
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience31 Years
Location3300 Main St, Springfield, Massachusetts
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:
  • William L Hiser attended and graduated from University Of Texas Southwestern Medical School At Dallas in 1993
  NPI Data:
  • NPI Number: 1366481459
  • Provider Enumeration Date: 06/05/2006
  • Last Update Date: 01/19/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 7911950662
  • Enrollment ID: I20050223000177

Medical Identifiers

Medical identifiers for William L Hiser such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366481459NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 159655 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Baystate Medical CenterSpringfield, MAHospital
Baystate Wing HospitalPalmer, MAHospital
Baystate Franklin Medical CenterGreenfield, MAHospital
Berkshire Medical CenterPittsfield, MAHospital
Baystate Noble HospitalWestfield, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Baystate Medical Practices Inc59916029711008

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 L Hiser allows following entities to bill medicare on his behalf.
Entity NameBaystate Medical Practices Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548205909
PECOS PAC ID: 5991602971
Enrollment ID: O20040225000080

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 L Hiser 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 L Hiser, MD
280 Chestnut St, 2nd Fl,
Springfield, MA 01199-1001

Ph: (413) 794-5700
William L Hiser, MD
3300 Main St, 2nd Fl Suite A,
Springfield, MA 01107-1112

Ph: (413) 794-2273

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.