Jan Leslie Hillson, M.D.
Rheumatology Physician · Cambridge, MA
Jan Leslie Hillson, M.D. is a rheumatology physician with a practice address in Cambridge, Massachusetts, and NPI 1912930157, issued on Jul 9, 2006. Check the license on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jan Leslie Hillson
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD00019230 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1493 Cambridge St, Cambridge, MA 02139
- Phone
- (617) 665-2300
- Enumerated
- Jul 9, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Also registered at 1493 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omar Abbas, MDStudent in an Organized Health Care Education/Training Program1225728025
- Nawyaab Abbasi, DOStudent in an Organized Health Care Education/Training Program1215875364
- Flannery AbbeySocial Worker1508604273
- Rana AbdallahSocial Worker1689220204
- Khaleel Abdul-Jabbaar, PT, DPTOrthopedic Physical Therapist1780295717
- Adri Abou-Bakr, MDStudent in an Organized Health Care Education/Training Program1770421844
Verify Jan Leslie Hillson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Jan Leslie Hillson among 343 rheumatology physician records in Massachusetts
Jan Leslie Hillson, M.D. is one of 343 rheumatology physician records with a practice address in Massachusetts. 73% 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 45% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Massachusetts
There are 343 rheumatology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 343 in Massachusetts → Every provider in Cambridge → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Suzanne Chapnick, M.D.Cambridge, MA 021391609912245
- Irving Fox, M.D.Cambridge, MA 021391144335035
- Lloyd Klickstein, MD, PHDCambridge, MA 021391467423418
- Paul RomainCambridge, MA 021391114086360
- George Spencer-Green, MDCambridge, MA 021391669608378
- Claire Stampfer, MDCambridge, MA 021391053485094
- Lisa Fitzgerald, MDCambridge, MA 021381881691160
- Jonathan Hausmann, MDCambridge, MA 021381932367562
Common questions
What is Jan Leslie Hillson, M.D.'s NPI number?
Jan Leslie Hillson, M.D.'s National Provider Identifier (NPI) is 1912930157, issued on Jul 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jan Leslie Hillson, M.D. located?
The NPPES record lists a practice address at 1493 Cambridge St, Cambridge, MA, 02139. Phone: (617) 665-2300. Providers update this record themselves, so call before visiting.
How can I verify Jan Leslie Hillson, M.D.'s license?
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.