ISABELLE M VONALTHEN-DAGUM M.D.
NPI 1598789760
Internal Medicine - Gastroenterology in East Setauket, NY

Q: What is Isabelle Vonalthen-dagum's NPI number?

The NPI number for Isabelle Vonalthen-dagum is 1598789760. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Q: What is Isabelle Vonalthen-dagum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since July 27, 2006PECOS EnrolledAccepts Medicare Assignment

3 TECHNOLOGY DR, EAST SETAUKET, NY 11733(631) 444-5220(631) 444-5225 Get Directions Write a Review

NPPES record last updated: February 29, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Isabelle M Vonalthen-dagum M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ISABELLE M VONALTHEN-DAGUM M.D. (NPI 1598789760) is an individual gastroenterology provider in East Setauket, New York, licensed in New York (231934) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Long Island Community Hospital, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1598789760

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameISABELLE M VONALTHEN-DAGUMCredential: M.D.

Location Address3 TECHNOLOGY DREast Setauket, NY 11733-4064

Mailing Address3 Technology DrEast Setauket, NY 11733-4064 · (631) 444-5220 · Fax (631) 444-5225

Phone(631) 444-5220

Fax(631) 444-5225

Sole ProprietorNo

Medical School CMSOtherGraduated 1987

Enumeration DateJuly 27, 2006

Last NPPES UpdateFebruary 29, 2008

✔ NPI 1598789760 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NY · 231934

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

3 TECHNOLOGY DR, East Setauket, NY 11733

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Other Identifiers 3

Medicare PIN3V218P9071NY

Medicaid02223614NY

Medicare UPINH52253NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Isabelle M Vonalthen-dagum M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9133110596

PECOS Enrollment IDI20040524000523

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

117 services86 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

90 services90 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

89 services67 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

77 services75 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

54 services39 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

48 services31 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

40 services40 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

38 services37 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

35 services35 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

26 services26 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

25 services24 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

16 services16 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330141

Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County

Emergency services

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330214

Location550 First AvenueNew York, NY 10016 · New York County

Emergency services Birthing friendly

Suny/Stony Brook University Hospital

Acute Care Hospitals · Stony Brook, NY

4/5 CMS rating

OwnershipGovernment - State

CMS Certification Number330393

LocationHealth Sciences Center SunyStony Brook, NY 11794 · Suffolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11733 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$154.28 typical visit price

range $67.40 – $203.53

Typical copayment $38.57 (range $16.85 – $50.88)

Most-billed visit code 99204

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ELLEN LI MD

Internal Medicine (Gastroenterology)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

MS. CAROL ANN MARTIN NP

Nurse Practitioner (Adult Health)

3 TECHNOLOGY DR, SUITE 700
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

DR. EDWARD SUN MD

Internal Medicine

3 TECHNOLOGY DR, STONY BROOK INTERNISTS, UFPC
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

JOSEFINA VERGEL FNP-C

Nurse Practitioner (Family)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

DR. PETER ELLS M.D.

Internal Medicine (Gastroenterology)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

ASIM S KHOKHAR M.D.

Internal Medicine (Gastroenterology)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

ALEXANDRA GUILLAUME MD

Internal Medicine (Gastroenterology)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

DR. BASIL RIGAS M.D.

Internal Medicine (Gastroenterology)

3 TECHNOLOGY DR
EAST SETAUKET, NY 11733

Suffolk County (631) 444-5220

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Isabelle Vonalthen-dagum's NPI number?

The NPI number for Isabelle Vonalthen-dagum is 1598789760. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Where is Isabelle Vonalthen-dagum located?

Isabelle Vonalthen-dagum practices at 3 Technology Dr, East Setauket, NY 11733. The listed phone number is (631) 444-5220.

What is Isabelle Vonalthen-dagum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Isabelle Vonalthen-dagum enrolled in Medicare?

Yes. Isabelle Vonalthen-dagum is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Isabelle Vonalthen-dagum affiliated with any hospitals?

According to CMS data, Isabelle Vonalthen-dagum is affiliated with Long Island Community Hospital, Nyu Langone Hospitals and Suny/Stony Brook University Hospital.

When was this NPI record last updated?

The NPPES record for Isabelle Vonalthen-dagum was last updated on February 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.