Doriann Klaassen, MD
Endocrinology, Diabetes & Metabolism
Doriann Klaassen is an Endocrinology, Diabetes & Metabolism specialist based in Hyannis, MA with over 8 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Doriann Klaassen, MD practices as part of a group endocrinology, diabetes & metabolism specialist practice in Hyannis, MA. She has been practicing since 2017 — over 8 years. Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, and more.
Older · 472dNPPES updated 2025-02-05 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine
$350 received from industry
10 transactions reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Doriann Klaassen's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Feb 4, 2025
Self-reported via NPPES
8 years in practice
Established
Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).
Taxonomy: 207RE0101X
Virtual Endocrinology, Diabetes & Metabolism Care With Doriann Klaassen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Doriann Klaassen for follow-ups, medication reviews, and ongoing care — no travel to Hyannis required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Doriann Klaassen
NPI records show Dr. Klaassen as active with telehealth listed in Hyannis, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (774) 470-5080.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024. See Data Methodology.
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Contact Doriann Klaassen
Practice Location
1030 Falmouth Rd # 201, Hyannis, MA 02601-2324
Mailing Address
1030 Falmouth Rd # 201, Hyannis, MA 02601-2324
This is a provider directory. Contact the office directly to schedule appointments.
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