Gamaliel Immanuel, MD
NPI 1598855231 · Gastroenterology Physician · Hempstead, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gamaliel Immanuel, MD is a Gastroenterology Physician provider in Hempstead, NY (NPI 1598855231).
Provider details
- NPI number
- 1598855231
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 142841 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
649 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 344 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 109 | $139 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 67 | $335 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 43 | $282 |
| Control of Bleeding of Upper Large Bowel Using a Flexible Endoscope45382 | 40 | $726 |
| Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 477 | 187 |
| Pantoprazole Sodium | 253 | 104 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 79 | 75 |
| Ursodiol | 63 | 20 |
| Balsalazide Disodium | 63 | 18 |
| Linaclotidebrand: Linzess | 44 | 13 |
| Mesalamine | 44 | 15 |
| Sucralfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$328 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gamaliel Immanuel's NPI number?
- Gamaliel Immanuel's National Provider Identifier (NPI) is 1598855231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gamaliel Immanuel's specialty?
- Gamaliel Immanuel is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gamaliel Immanuel located?
- Gamaliel Immanuel's practice location on file with NPPES is 230 Hilton Ave, Hempstead, NY 11550-8115.
- What is Gamaliel Immanuel's phone number?
- The practice phone number listed in the NPPES registry for Gamaliel Immanuel is (516) 565-5556.
- Does Gamaliel Immanuel accept Medicare?
- Gamaliel Immanuel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gamaliel Immanuel's NPI active?
- Yes — Gamaliel Immanuel's NPI (1598855231) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.