Michael Horwich, MD, PHD
NPI 1538470976 · Dermatology Physician · Amherst, MA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Horwich, MD, PHD is a Dermatology Physician provider in Amherst, MA (NPI 1538470976).
Provider details
- NPI number
- 1538470976
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 258156 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-06-30
- Last updated
- 2025-06-12
- Certified
- 2025-06-12
Frequently asked questions
- What is Michael Horwich's NPI number?
- Michael Horwich's National Provider Identifier (NPI) is 1538470976, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Horwich's specialty?
- Michael Horwich is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Horwich located?
- Michael Horwich's practice location on file with NPPES is 29b Cottage St, Amherst, MA 01002-1206.
- What is Michael Horwich's phone number?
- The practice phone number listed in the NPPES registry for Michael Horwich is (413) 549-7400.
- Does Michael Horwich accept Medicare?
- Michael Horwich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Horwich's NPI active?
- Yes — Michael Horwich's NPI (1538470976) is active in the NPPES registry as of the last update on 2025-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.