Harald Sinclair Mackenzie, M.D.
Nephrology Physician · Concord, MA
Harald Sinclair Mackenzie, M.D. is a nephrology physician with a practice address in Concord, Massachusetts, and NPI 1497922439, issued on May 9, 2008. Check the license (Massachusetts 77111, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Harald Sinclair Mackenzie
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 77111 MA
Self-reported in NPPES; status is on the state search - Practice location
- 422B Monument St, Concord, MA 01742
- Phone
- (978) 729-4331
- Enumerated
- May 9, 2008
- Record last updated
- May 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Harald Sinclair Mackenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 77111Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Nephrology Physician providers in Massachusetts
There are 417 nephrology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other nephrology physician records in Massachusetts
- Amtul Aala, MDBoston, MA1174946347
- Reza Abdi, MDBoston, MA1356359368
- Marat Abdullin, M.D.Springfield, MA1619159712
- Vivian AbernethyBoston, MA1710960232
- Rekha Abichandani, M.D.Cambridge, MA1912033598
- Konstantin Abramov, M.D.Worcester, MA1992854707
- Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
- Nikhil AgrawalBoston, MA1467722579
- Ayman Al Jurdi, M.D.Boston, MA1043690332
- Laith Al Rabadi, M.D.Boston, MA1821309188
Common questions
What is Harald Sinclair Mackenzie, M.D.'s NPI number?
Harald Sinclair Mackenzie, M.D.'s National Provider Identifier (NPI) is 1497922439, issued on May 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Harald Sinclair Mackenzie, M.D. located?
The NPPES record lists a practice address at 422B Monument St, Concord, MA, 01742. Phone: (978) 729-4331. Providers update this record themselves, so call before visiting.
How can I verify Harald Sinclair Mackenzie, M.D.'s license?
NPPES lists Massachusetts license number 77111, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.