Mark A. Jackowitz, M.D.
Specialist · Springfield, MA
Mark A. Jackowitz, M.D. is a specialist with a practice address in Springfield, Massachusetts, and NPI 1508851411, issued on Sep 16, 2005. Check the license (Massachusetts 57126, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark A. Jackowitz
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 57126 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3640 Main St, Springfield, MA 01107
- Phone
- (413) 739-7367
- Enumerated
- Sep 16, 2005
- Record last updated
- May 23, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (413) 737-2686
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,096 in Massachusetts → Look up another NPI →
Also registered at 3640 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark A. Jackowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 57126Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average specialist in 2024
215 Medicare Part D claims for 93 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Latanoprost142 claims
- Timolol Maleate13 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mark A. Jackowitz among 1,096 specialist records in Massachusetts
Mark A. Jackowitz, M.D. is one of 1,096 specialist records with a practice address in Massachusetts. 15% 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 · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2014 · 82% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Massachusetts
There are 1,096 specialist records in Massachusetts.
All 1,096 in Massachusetts → Every provider in Springfield → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Brian Acker, M.D.Springfield, MA 011071619077369
- Karen BalmerSpringfield, MA 011071255743720
- Brian Bredvik, M.D.Springfield, MA 011071689660284
- Rachel CanevariSpringfield, MA 011071780033407
- Gregory Faust, M.D.Springfield, MA 011071164417929
- David March, M.D.Springfield, MA 011071407820798
- Philip Moraitis, M.D.Springfield, MA 011071396730172
- Thomas Napier, M.D.Springfield, MA 011071750480422
Common questions
What is Mark A. Jackowitz, M.D.'s NPI number?
Mark A. Jackowitz, M.D.'s National Provider Identifier (NPI) is 1508851411, issued on Sep 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Jackowitz, M.D. located?
The NPPES record lists a practice address at 3640 Main St, Springfield, MA, 01107. Phone: (413) 739-7367. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Jackowitz, M.D.'s license?
NPPES lists Massachusetts license number 57126, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Mark A. Jackowitz, M.D. prescribe under Medicare Part D?
In 2024, Mark A. Jackowitz, M.D. had 215 Medicare Part D claims for 93 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Mark A. Jackowitz, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.