Ronald Winfield, MD
NPI 1679554927 · Psychiatry Physician · North Chelmsford, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Winfield, MD is a Psychiatry Physician provider in North Chelmsford, MA (NPI 1679554927).
Provider details
- NPI number
- 1679554927
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 36859 (MA)
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
1,058 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) |
|---|---|---|
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Delivery and Management90868 | 746 | $216 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 178 | $136 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 74 | $95 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 33 | $198 |
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Initial Delivery and Management90867 | 27 | $363 |
Typical Medicare-allowed amounts for these services range $95–$363 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 62 |
| Quetiapine Fumarate | 51 |
| Fluoxetine Hcl | 38 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 37 |
| Sertraline Hcl | 29 |
| Alprazolam | 28 |
| Trazodone Hcl | 26 |
| Clonazepam | 25 |
| Escitalopram Oxalate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$100 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
- 2005-11-11
- Last updated
- 2015-05-18
Frequently asked questions
- What is Ronald Winfield's NPI number?
- Ronald Winfield's National Provider Identifier (NPI) is 1679554927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Winfield's specialty?
- Ronald Winfield is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Winfield located?
- Ronald Winfield's practice location on file with NPPES is 73 Princeton St, North Chelmsford, MA 01863-1559.
- What is Ronald Winfield's phone number?
- The practice phone number listed in the NPPES registry for Ronald Winfield is (978) 256-6579.
- Does Ronald Winfield accept Medicare?
- Ronald Winfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Winfield's NPI active?
- Yes — Ronald Winfield's NPI (1679554927) is active in the NPPES registry as of the last update on 2015-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.