Gregory Alexander, MD
NPI 1588157895 · Radiation Oncology Physician · Sewell, NJ
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Alexander, MD is a Radiation Oncology Physician provider in Sewell, NJ (NPI 1588157895).
Provider details
- NPI number
- 1588157895
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MT-216131 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
542 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 207 | $46 |
| Design and Construction of Complex Radiation Treatment Device77334 | 68 | $60 |
| Calculation of Radiation Therapy Dose77300 | 66 | $33 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 59 | $197 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 39 | $16 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$196 across 2 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
Additional practice locations (1)
- 801 Ostrum StBethlehem, PA 18015Phone: (484) 526-4000
Registry dates
- Enumerated
- 2018-06-11
- Last updated
- 2023-06-15
- Certified
- 2023-02-15
Frequently asked questions
- What is Gregory Alexander's NPI number?
- Gregory Alexander's National Provider Identifier (NPI) is 1588157895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Alexander's specialty?
- Gregory Alexander is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Alexander located?
- Gregory Alexander's practice location on file with NPPES is 900 Medical Center Dr Ste 100, Sewell, NJ 08080-2358.
- What is Gregory Alexander's phone number?
- The practice phone number listed in the NPPES registry for Gregory Alexander is (856) 582-3008.
- Does Gregory Alexander accept Medicare?
- Gregory Alexander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Alexander's NPI active?
- Yes — Gregory Alexander's NPI (1588157895) is active in the NPPES registry as of the last update on 2023-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.