Gregory Mallo, M.D.
NPI 1245412295 · Orthopaedic Surgery Physician · East Setauket, NY
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Mallo, M.D. is a Orthopaedic Surgery Physician provider in East Setauket, NY (NPI 1245412295).
Provider details
- NPI number
- 1245412295
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 280603 (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
18 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
2,923 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 | 1,116 | $148 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 597 | $45 |
| Aspiration And/Or Injection of Fluid Large Joint Using Ultrasound Guidance20611 | 448 | $125 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 232 | $193 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 149 | $78 |
| Anchoring of Biceps Tendon23430 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 164 | 142 |
| Celecoxib | 63 | 35 |
| Meloxicam | 62 | 28 |
| Oxycodone Hcl | 25 | 23 |
| Cyclobenzaprine Hcl | 19 | 15 |
| Diclofenac Sodium | 18 | 16 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 15 | 12 |
| Tramadol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$344 across 4 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
- 2007-12-01
- Last updated
- 2015-11-18
Frequently asked questions
- What is Gregory Mallo's NPI number?
- Gregory Mallo's National Provider Identifier (NPI) is 1245412295, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Mallo's specialty?
- Gregory Mallo is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Mallo located?
- Gregory Mallo's practice location on file with NPPES is 6 Technology Dr 100, East Setauket, NY 11733-4079.
- What is Gregory Mallo's phone number?
- The practice phone number listed in the NPPES registry for Gregory Mallo is (631) 689-6698.
- Does Gregory Mallo accept Medicare?
- Gregory Mallo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Mallo's NPI active?
- Yes — Gregory Mallo's NPI (1245412295) is active in the NPPES registry as of the last update on 2015-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.