Ronald Greene, M.D.
NPI 1861678542 · Orthopaedic Surgery Physician · Greenwich, CT
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Greene, M.D. is a Orthopaedic Surgery Physician provider in Greenwich, CT (NPI 1861678542).
Provider details
- NPI number
- 1861678542
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 047609 (CT)
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
18 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
618 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 | 174 | $93 |
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 86 | $26 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 85 | $73 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 59 | $37 |
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 49 | $21 |
| X-Ray of Hip, 2-3 Views73502 | 43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 115 | 77 |
| Methylprednisolone | 51 | 48 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-01-13
- Last updated
- 2017-03-06
Frequently asked questions
- What is Ronald Greene's NPI number?
- Ronald Greene's National Provider Identifier (NPI) is 1861678542, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Greene's specialty?
- Ronald Greene is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Greene located?
- Ronald Greene's practice location on file with NPPES is 6 Greenwich Office Park, Greenwich, CT 06831-5151.
- What is Ronald Greene's phone number?
- The practice phone number listed in the NPPES registry for Ronald Greene is (203) 869-1145.
- Does Ronald Greene accept Medicare?
- Ronald Greene is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Greene's NPI active?
- Yes — Ronald Greene's NPI (1861678542) is active in the NPPES registry as of the last update on 2017-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.