Ronald P. Winfield, MD
Psychiatry Physician · North Chelmsford, MA
Ronald P. Winfield, MD is a psychiatry physician with a practice address in North Chelmsford, Massachusetts, and NPI 1679554927, issued on Nov 11, 2005. Check the license (Massachusetts 36859, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ronald P. Winfield
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 36859 MA
Self-reported in NPPES; status is on the state search - Practice location
- 73 Princeton St, North Chelmsford, MA 01863
- Phone
- (978) 256-6579
- Enumerated
- Nov 11, 2005
- Record last updated
- May 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (978) 256-1943
- Medicaid ID
- 2029693 MA
- Medicare enrollment
- Enrolled (PECOS I20050518000897); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1973
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 73 Princeton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald P. Winfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 36859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average psychiatry physician in 2024
530 Medicare Part D claims for 61 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Lorazepam62 claims
- Quetiapine Fumarate51 claims
- Fluoxetine Hcl38 claims
- Venlafaxine Hcl Er37 claims
- Sertraline Hcl29 claims
- Alprazolam28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $99.94
4 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Greater Lowell Psychiatric Associates, LLCNorth Chelmsford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald P. Winfield among 2,736 psychiatry physician records in Massachusetts
Ronald P. Winfield, MD is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated1973 · median 2005 among the 1,219 with a school on file
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 psychiatry physician records list a practice address in North Chelmsford
They are 2 of the 159 NPPES records with a practice address in North Chelmsford, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in North Chelmsford → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Paul Menitoff, MDN Chelmsford, MA 018631578545562
- Usha Tripathi, MDNorth Chelmsford, MA 018631205818010
- Richard Falzone, MDNorth Reading, MA 018641841271707
- Debra Little, M.D.Merrimac, MA 018601154571016
- Mary Thornton, CNPReading, MA 018671730805391
- Neelam Sihag, MDLowell, MA 018541164407011
- Erich Goetzel, M.D.Lowell, MA 018521891834388
- Phillip Hill, MDLowell, MA 018521245247451
Common questions
What is Ronald P. Winfield, MD's NPI number?
Ronald P. Winfield, MD's National Provider Identifier (NPI) is 1679554927, issued on Nov 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald P. Winfield, MD located?
The NPPES record lists a practice address at 73 Princeton St, North Chelmsford, MA, 01863. Phone: (978) 256-6579. Providers update this record themselves, so call before visiting.
How can I verify Ronald P. Winfield, MD's license?
NPPES lists Massachusetts license number 36859, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald P. Winfield, MD prescribe under Medicare Part D?
In 2024, Ronald P. Winfield, MD had 530 Medicare Part D claims for 61 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.