Joby Jacob
Internal Medicine Physician · Boston, MA
Joby Jacob is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1073045456, issued on Apr 3, 2017. Check the license (Massachusetts T288042, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joby Jacob
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- T288042 MA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Brookline Ave, Boston, MA 02215
- Phone
- (617) 754-4677
- Enumerated
- Apr 3, 2017
- Record last updated
- Jun 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (617) 632-0215
- Medicare enrollment
- Enrolled (PECOS I20210720002057); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 330 Brookline Ave
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Verify Joby Jacob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license T288042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
146 Medicare Part D claims for 60 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 14 claims were for opioids.
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.
Bills Medicare through 2 group practices
- Associated Physicians OF Harvard Medical Faculty Physicians AT Beth ISNeedham, MA
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joby Jacob among 6,825 internal medicine physician records in Massachusetts
Joby Jacob is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2017 · median 2004 among the 4,103 with a school on file
- Record last updated2021 · 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 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Boston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stephen Boswell, M.D.Boston, MA 022151477541217
- Jennifer Cluett, MDBoston, MA 022151962491183
- Jan Cook, M.D.Boston, MA 022151437152139
- Rachel Freedman, M.D.Boston, MA 022151942297189
- Joseph Gesmundo, MDBoston, MA 022151891785069
- Alex Gonzalez, MD, MPHBoston, MA 022151134101629
- Scott Harris, MDBoston, MA 022151871581694
- Joseph Li, M.D.Boston, MA 022151043209380
Common questions
What is Joby Jacob's NPI number?
Joby Jacob's National Provider Identifier (NPI) is 1073045456, issued on Apr 3, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Joby Jacob located?
The NPPES record lists a practice address at 330 Brookline Ave, Boston, MA, 02215. Phone: (617) 754-4677. Providers update this record themselves, so call before visiting.
How can I verify Joby Jacob's license?
NPPES lists Massachusetts license number T288042, 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.
How much does Joby Jacob prescribe under Medicare Part D?
In 2024, Joby Jacob had 146 Medicare Part D claims for 60 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.