John Gregg, D.O.
NPI 1013118660 · Family Medicine Physician · Wayne, NJ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Gregg, D.O. is a Family Medicine Physician provider in Wayne, NJ (NPI 1013118660).
Provider details
- NPI number
- 1013118660
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MB08249300 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
751 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 313 | $99 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 115 | $122 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 | 97 | $68 |
| Automated Urinalysis Test81003 | 56 | $2 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $138 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 73 | 71 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 41 | 40 |
| Cephalexin | 41 | 41 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | 26 |
| Azithromycin | 31 | 31 |
| Fluticasone Propionate | 29 | 28 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-30
- Last updated
- 2008-05-27
Frequently asked questions
- What is John Gregg's NPI number?
- John Gregg's National Provider Identifier (NPI) is 1013118660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gregg's specialty?
- John Gregg is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Gregg located?
- John Gregg's practice location on file with NPPES is 510 Hamburg Tpke, Wayne, NJ 07470-2025.
- What is John Gregg's phone number?
- The practice phone number listed in the NPPES registry for John Gregg is (973) 942-6005.
- Does John Gregg accept Medicare?
- John Gregg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Gregg's NPI active?
- Yes — John Gregg's NPI (1013118660) is active in the NPPES registry as of the last update on 2008-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.