Jacob Joseph Kosarchuk, MD
Neurological Surgery Physician · Boston, MA
Jacob Joseph Kosarchuk, MD is a neurological surgery physician with a practice address in Boston, Massachusetts, and NPI 1932729597, issued on Apr 23, 2020. Check the license (Massachusetts ETLL-369, 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
- Jacob Joseph Kosarchuk
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- ETLL-369 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington Street, Proger 7, Boston, MA 02111
- Phone
- (617) 636-5858
- Enumerated
- Apr 23, 2020
- Record last updated
- Jun 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 236 in Massachusetts → Look up another NPI →
Verify Jacob Joseph Kosarchuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license ETLL-369Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Jacob Joseph Kosarchuk among 236 neurological surgery physician records in Massachusetts
Jacob Joseph Kosarchuk, MD is one of 236 neurological surgery physician records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 10% newer
- In a Medicare fileNo · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2020 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Massachusetts
There are 236 neurological surgery physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 236 in Massachusetts → Every provider in Boston → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Abraham Boskovitz, MDBoston, MA 021111033301726
- Alper DincerBoston, MA 021111184243537
- Carl Heilman, M.D.Boston, MA 021111649229907
- Robert Heller, M.D.Boston, MA 021111932547395
- James Kryzanski, MDBoston, MA 021111730107467
- Adel Malek, MDBoston, MA 021111598872962
- Tara Nail, M.D.Boston, MA 021111386093763
- Jason Rahal, M.D.Boston, MA 021111396992004
Common questions
What is Jacob Joseph Kosarchuk, MD's NPI number?
Jacob Joseph Kosarchuk, MD's National Provider Identifier (NPI) is 1932729597, issued on Apr 23, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Jacob Joseph Kosarchuk, MD located?
The NPPES record lists a practice address at 800 Washington Street, Proger 7, Boston, MA, 02111. Phone: (617) 636-5858. Providers update this record themselves, so call before visiting.
How can I verify Jacob Joseph Kosarchuk, MD's license?
NPPES lists Massachusetts license number ETLL-369, 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.