John Joseph Jakimczyk, M.D.
Pediatrics Physician · Acton, MA
John Joseph Jakimczyk, M.D. is a pediatrics physician with a practice address in Acton, Massachusetts, and NPI 1477542967, issued on Oct 17, 2005. Check the license (Massachusetts 160759, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Joseph Jakimczyk
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 160759 MA
Self-reported in NPPES; status is on the state search - Practice location
- 321 Main St, Acton, MA 01720
- Phone
- (978) 635-8700
- Enumerated
- Oct 17, 2005
- Record last updated
- Mar 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (978) 635-8920
- Medicaid ID
- 0129330 MA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 321 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Bechtel, NPNurse Practitioner1144578626
- Meryl BergerNurse Practitioner1922600220
- Louis Berk, M.D.Family Medicine Physician1730501875
- Elizabeth Berman, RDN, LDNRegistered Dietitian1679949143
- Christine Brown, M.D.Internal Medicine Physician1588861660
- Samuel BrownClinical Social Worker1336576065
Verify John Joseph Jakimczyk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 160759Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 87.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
John Joseph Jakimczyk among 2,628 pediatrics physician records in Massachusetts
John Joseph Jakimczyk, M.D. is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% 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, 84% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2015 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 pediatrics physician records list a practice address in Acton
They are 14 of the 556 NPPES records with a practice address in Acton, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Acton → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Matthew Chamberlain, MDActon, MA 017201760061279
- Mark Cohen, M.D.Acton, MA 017201396730818
- Christopher Cooper, M.D.Acton, MA 017201477542132
- Jasmin Darling, M.D.Acton, MA 017201962882779
- Elayne Feinsod, M.D.Acton, MA 017201942425301
- Emily Harder, M.D.Acton, MA 017201619177698
- Alexandra Iannini, MDActon, MA 017201669433603
- John Moren, CPNPActon, MA 017201952072639
Common questions
What is John Joseph Jakimczyk, M.D.'s NPI number?
John Joseph Jakimczyk, M.D.'s National Provider Identifier (NPI) is 1477542967, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Jakimczyk, M.D. located?
The NPPES record lists a practice address at 321 Main St, Acton, MA, 01720. Phone: (978) 635-8700. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Jakimczyk, M.D.'s license?
NPPES lists Massachusetts license number 160759, 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.
What is John Joseph Jakimczyk, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.