Gregory Ackert, M.D.
NPI 1417991803 · Gastroenterology Physician · New Hyde Park, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Ackert, M.D. is a Gastroenterology Physician provider in New Hyde Park, NY (NPI 1417991803).
Provider details
- NPI number
- 1417991803
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 138398 (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
20 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
1,494 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 564 | $144 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 238 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 196 | $101 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 106 | $145 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 78 | $426 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 372 | 115 |
| Atorvastatin Calcium | 237 | 70 |
| Rosuvastatin Calcium | 229 | 71 |
| Carvedilol | 227 | 59 |
| Omeprazole | 162 | 46 |
| Amlodipine Besylate | 153 | 43 |
| Famotidine | 151 | 46 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$701 across 26 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
- 2006-06-15
- Last updated
- 2014-07-31
Frequently asked questions
- What is Gregory Ackert's NPI number?
- Gregory Ackert's National Provider Identifier (NPI) is 1417991803, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ackert's specialty?
- Gregory Ackert is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Ackert located?
- Gregory Ackert's practice location on file with NPPES is 1983 Marcus Ave, New Hyde Park, NY 11042-2000.
- What is Gregory Ackert's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ackert is (516) 627-2121.
- Does Gregory Ackert accept Medicare?
- Gregory Ackert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Ackert's NPI active?
- Yes — Gregory Ackert's NPI (1417991803) is active in the NPPES registry as of the last update on 2014-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.