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Source: CMS NPI registry

GLP‑1Centers

Kenneth Sluis, MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

NPI verified
Practice location
300 Main St, Lewiston, ME 04240 View on map →
NPI number
1073068441
Provider type
Individual provider · registered 2016 (10 years in the registry)
State licenses
ME · MD24615MA · 283778

Additional locations

  • 330 Brookline Ave, Boston, MA 02215(551) 206-7693
  • 125 Paterson St, New Brunswick, NJ 08901(732) 235-6968
  • 6 E Chestnut St, Augusta, ME 04330(207) 621-9320

Registered specialties

  • Internal Medicine, Endocrinology, Diabetes & Metabolism
  • Internal Medicine
  • Student in an Organized Health Care Education/Training Program

Record provenance

Details are drawn from this provider's public record in the CMS National Provider Identifier registry, which CMS last updated on February 5, 2026. Registry specialty indicates the care a provider is registered to deliver — it is not confirmation that this practice currently prescribes GLP‑1 medications. Call to confirm current services, availability, and pricing.

View the source record at CMS ↗ How listings are built Report an error

What an endocrinologist does

Endocrinologists specialize in hormone-related conditions — diabetes, thyroid disease, and metabolic disorders. They were prescribing GLP-1 medications for type 2 diabetes years before the drugs became known for weight loss, so they tend to have deep experience with dosing, side effects, and how these medications interact with other conditions.

Asking about GLP‑1 treatment at Kenneth Sluis

Call (207) 795-7520 and ask these questions before booking:

  • ✓Do you currently prescribe GLP‑1 medications (semaglutide or tirzepatide) for weight loss?
  • ✓Do you work with my insurance, or is the program cash-pay — and what does a month cost all-in?
  • ✓Is the medication a brand-name product, or compounded by a compounding pharmacy?
  • ✓What follow-up is included for dose changes and side effects?

About compounded medications: A compounded drug is prepared by a state-licensed compounding pharmacy. Compounded drugs are not FDA-approved and are not reviewed by the FDA for safety, effectiveness, or quality, and they are not the same as FDA-approved generic drugs. Ask any practice which it dispenses and which pharmacy prepares it.

Other GLP‑1 providers in Lewiston

See all 4 clinics in Lewiston →