Jessica A Macwilliams, PAC - Medicare Physician Assistant in Agawam, MA

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Jessica A Macwilliams, PAC is a medicare enrolled "Physician Assistant" in Agawam, Massachusetts. She graduated from nursing school in 2005 and has 21 years of diverse experience with area of expertise as Physician Assistant. She is a member of the group practice Hillside Dermatology Pc and her current practice location is 200 Silver St Unit 106, Agawam, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (413) 341-5350.

Jessica A Macwilliams is licensed to practice in Connecticut (license number 002204) and she also participates in the medicare program. She may accept medicare assignments (which means she may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and her NPI Number is 1578663001.

Contact Information

Jessica A Macwilliams, PAC
200 Silver St Unit 106,
Agawam, MA 01001-3067
(413) 341-5350
(413) 341-5335

Map and Direction




Provider's Profile

Full NameJessica A Macwilliams
GenderFemale
SpecialityPhysician Assistant
Experience21 Years
Location200 Silver St Unit 106, Agawam, Massachusetts
Accepts Medicare AssignmentsMay be. She may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Jessica A Macwilliams graduated from nursing school in 2005
  NPI Data:
  • NPI Number: 1578663001
  • Provider Enumeration Date: 09/24/2006
  • Last Update Date: 04/13/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 3971529967
  • Enrollment ID: I20051019000483

Medical Identifiers

Medical identifiers for Jessica A Macwilliams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578663001NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant 002204 (Connecticut)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hillside Dermatology Pc39719830737

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. Jessica A Macwilliams allows following entities to bill medicare on her behalf.
Entity NameRiverbend Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841651197
PECOS PAC ID: 5698064343
Enrollment ID: O20160614001710
Entity NameHillside Dermatology PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669126546
PECOS PAC ID: 3971983073
Enrollment ID: O20220707001217

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. Jessica A Macwilliams 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
Jessica A Macwilliams, PAC
200 Silver St Unit 106,
Agawam, MA 01001-3067

Ph: (413) 341-5350		Jessica A Macwilliams, PAC
200 Silver St Unit 106,
Agawam, MA 01001-3067

Ph: (413) 341-5350

Reviews and Comments


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Practice Location: 200 Silver St Unit 106, Agawam, MA 01001
Phone: 413-341-5350    Fax: 413-341-5335
Lauren Bernstein,
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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.