Doctor profile · Federal record
Dr. Doriann Klaassen, MD
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Hyannis, MA
- NPI 1043721632
- Accepts Medicare
- 8 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1030 Falmouth RD # 201
Hyannis, MA 026012324
(774) 470-5080
Credentials & registration
- NPI registered
- October 2017 — 9 yrs on file
- Profile last updated
- February 5, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Massachusetts #1020815
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043721632. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$350
Transactions
10
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| BETA BIONICS, INC. | 1 | $126.50 | |
| Amgen Inc. | 2 | $45.05 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 1 | $31.49 | |
| Tandem Diabetes Care, Inc. | 1 | $31.02 | |
| Dexcom, Inc. | 1 | $30.57 | |
| Lilly USA, LLC | 1 | $29.43 | |
| Sandoz Inc. | 1 | $24.16 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $17.72 | |
| Janssen Biotech, Inc. | 1 | $14.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
138
Patients
0
Total drug cost
$75,846
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ozempic (Semaglutide) | Brand | 28 | 0 | $39,517 |
| Synthroid (Levothyroxine Sodium) | Brand | 24 | 0 | $1,593 |
| Trulicity (Dulaglutide) | Brand | 20 | 0 | $27,557 |
| Levothyroxine Sodium | Generic | 18 | 0 | $187 |
| Omeprazole | Generic | 13 | 0 | $249 |
| Fludrocortisone Acetate | Generic | 12 | 0 | $273 |
| Metformin Hcl | Generic | 12 | 0 | $176 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 11 | 0 | $6,295 |
Frequently asked questions
What is Dr. Doriann Klaassen's medical specialty?
Dr. Doriann Klaassen practices Endocrinology, Diabetes & Metabolism Physician in Hyannis, MA.
Where does Dr. Doriann Klaassen practice?
Dr. Doriann Klaassen practices at 1030 Falmouth RD # 201, Hyannis, MA 026012324. Office phone: 7744705080.
What is Dr. Doriann Klaassen's NPI?
Dr. Doriann Klaassen's National Provider Identifier (NPI) is 1043721632, issued by NPPES.
Does Dr. Doriann Klaassen accept Medicare assignment?
Yes. Dr. Doriann Klaassen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.