Malcolm Wells Mackenzie, M.D.
Obstetrics & Gynecology Physician · Lexington, MA
Malcolm Wells Mackenzie, M.D. is an obstetrics & gynecology physician with a practice address in Lexington, Massachusetts, and NPI 1578650610, issued on Oct 9, 2006. Check the license on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Malcolm Wells Mackenzie
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 9604 NH
Self-reported in NPPES; status is on the state search - Practice location
- 57 Bedford St, Lexington, MA 02420
- Phone
- (603) 847-3404
- Enumerated
- Oct 9, 2006
- Record last updated
- Apr 28, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (617) 499-5579
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,127 in Massachusetts → Look up another NPI →
Also registered at 57 Bedford St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Malcolm Wells Mackenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
314 Medicare Part D claims for 25 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 63 claims were for opioids.
Most prescribed
- Diazepam68 claims
- Hydromorphone Hcl62 claims
- Baclofen41 claims
- Fluconazole24 claims
- Estradiol17 claims
- Ondansetron Hcl13 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: $1,072.00
3 payments; by number, the most common kind was consulting fee; the largest payer was CooperSurgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Malcolm Wells Mackenzie among 1,127 obstetrics & gynecology physician records in Massachusetts
Malcolm Wells Mackenzie, M.D. is one of 1,127 obstetrics & gynecology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 50% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2009 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Massachusetts
There are 1,127 obstetrics & gynecology physician records in Massachusetts.
All 1,127 in Massachusetts → Every provider in Lexington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Cecilia King-Porter, M.D.Lexington, MA 024201265669949
- Marc Kobelin, M.D.Lexington, MA 024201104978907
- Darwish Yusah, M.D.Lexington, MA 024211922141480
- Carolyn Cline, MDBrookline, MA 024451043277429
- Dema Demaggio, MDBrookline, MA 024451306803606
- Susan Hellerstein, MDBrookline, MA 024451013974492
- Vivian Hernandez, MDBrookline, MA 024451164489530
- Jeffrey Katz, MDBrookline, MA 024451174513261
Common questions
What is Malcolm Wells Mackenzie, M.D.'s NPI number?
Malcolm Wells Mackenzie, M.D.'s National Provider Identifier (NPI) is 1578650610, issued on Oct 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Malcolm Wells Mackenzie, M.D. located?
The NPPES record lists a practice address at 57 Bedford St, Lexington, MA, 02420. Phone: (603) 847-3404. Providers update this record themselves, so call before visiting.
How can I verify Malcolm Wells Mackenzie, M.D.'s license?
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 Malcolm Wells Mackenzie, M.D. prescribe under Medicare Part D?
In 2024, Malcolm Wells Mackenzie, M.D. had 314 Medicare Part D claims for 25 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.