Doctor profile · Federal record
Dr. Isabelle Vonalthen-Dagum, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · East Setauket, NY
- NPI 1598789760
- Accepts Medicare
- 39 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3 Technology Dr
East Setauket, NY 117334064
(631) 444-5220
fax (631) 444-5225
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- February 29, 2008
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #231934
- Medicaid
- NY #02223614
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598789760. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
692
Distinct HCPCS
10
Medicare allowed
$92,262
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 143 | 69 | $59 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 109 | 87 | $150 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 70 | 59 | $107 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 61 | 60 | $113 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 58 | 45 | $92 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 56 | 56 | $198 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 46 | 44 | $303 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 44 | 42 | $114 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 31 | 30 | $153 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 26 | 25 | $202 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 72. This provider delivers 9.6× the peer median.Open Payments
Industry payments received
All-time total
$288
Transactions
4
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, Inc. | 1 | $125.00 | |
| Boston Scientific Corporation | 1 | $100.46 | |
| ABBVIE INC. | 1 | $32.87 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $29.28 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
466
Patients
149
Total drug cost
$272,708
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 158 | 69 | $1,809 |
| Pantoprazole Sodium | Generic | 69 | 30 | $1,136 |
| Famotidine | Generic | 44 | 22 | $506 |
| Viberzi (Eluxadoline) | Brand | 22 | 0 | $27,695 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 21 | 0 | $2,883 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 20 | 0 | $770 |
| Dicyclomine Hcl | Generic | 19 | 0 | $363 |
| Creon (Lipase/Protease/Amylase) | Brand | 17 | 0 | $51,753 |
| Ondansetron Odt (Ondansetron) | Brand | 16 | 0 | $1,072 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 15 | 15 | $201 |
Hospital affiliations
Frequently asked questions
What is Dr. Isabelle Vonalthen-Dagum's medical specialty?
Dr. Isabelle Vonalthen-Dagum practices Gastroenterology Physician in East Setauket, NY.
Where does Dr. Isabelle Vonalthen-Dagum practice?
Dr. Isabelle Vonalthen-Dagum practices at 3 Technology Dr, East Setauket, NY 117334064. Office phone: 6314445220.
What is Dr. Isabelle Vonalthen-Dagum's NPI?
Dr. Isabelle Vonalthen-Dagum's National Provider Identifier (NPI) is 1598789760, issued by NPPES.
Does Dr. Isabelle Vonalthen-Dagum accept Medicare assignment?
Yes. Dr. Isabelle Vonalthen-Dagum accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Isabelle Vonalthen-Dagum commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.