Dr Michael D Horwich, MD, PHD - Medicare Dermatology in Amherst, MA

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Dr Michael D Horwich, MD, PHD is a medicare enrolled "Dermatology" physician in Amherst, Massachusetts. His current practice location is 29b Cottage St, Amherst, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (413) 549-7400.

Dr Michael D Horwich is licensed to practice in Massachusetts (license number 258156) 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 1538470976.

Contact Information

Dr Michael D Horwich, MD, PHD
29b Cottage St,
Amherst, MA 01002-1206
(413) 549-7400
(413) 549-7402

Map and Direction




Physician's Profile

Full NameDr Michael D Horwich
GenderMale
SpecialityDermatology
Location29b Cottage St, Amherst, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1538470976
  • Provider Enumeration Date: 06/30/2010
  • Last Update Date: 06/12/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7315163474
  • Enrollment ID: I20140725000446

Medical Identifiers

Medical identifiers for Dr Michael D Horwich such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538470976NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207N00000XDermatology 258156 (Massachusetts)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. Dr Michael D Horwich 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
Entity NameNew England Dermatology Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356348098
PECOS PAC ID: 9436113677
Enrollment ID: O20041117000172

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 Michael D Horwich 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 Michael D Horwich, MD, PHD
526 Main St Ste 302,
Acton, MA 01720-3301

Ph: (978) 371-7010		Dr Michael D Horwich, MD, PHD
29b Cottage St,
Amherst, MA 01002-1206

Ph: (413) 549-7400

Reviews and Comments


Dermatology Doctors in Amherst, MA

James H. Ratner, MD
Dermatology
Medicare: Not Enrolled in Medicare
Practice Location: 170 University Dr, #102, Amherst, MA 01002
Phone: 413-253-2287    Fax: 413-253-9872
Richard M. Wyatt, MD
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 29b Cottage St, Amherst, MA 01002
Phone: 413-549-7400    Fax: 413-549-7402

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.