Francine Ton Nghiem, MD
Rheumatology Physician · Cambridge, MA
Francine Ton Nghiem, MD is a rheumatology physician with a practice address in Cambridge, Massachusetts, and NPI 1902862451, issued on Apr 25, 2006. Check the license (Massachusetts 159803, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Francine Ton Nghiem
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 159803 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Mount Auburn St, Cambridge, MA 02138
- Phone
- (617) 868-2650
- Enumerated
- Apr 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (617) 868-2641
- Medicaid ID
- 0199818 MA
- Medicare enrollment
- Enrolled (PECOS I20040804000425); accepts Medicare assignment
- Medical or professional school
- Rutgers New Jersey Medical School, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Also registered at 300 Mount Auburn St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Francine Ton Nghiem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 159803Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,034 Medicare Part D claims for 124 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 22 claims were for opioids.
Most prescribed
- Methotrexate186 claims
- Prednisone90 claims
- Hydroxychloroquine Sulfate59 claims
- Allopurinol54 claims
- Diclofenac Sodium52 claims
- Azathioprine51 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.
Bills Medicare through one group practice
- 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).
Francine Ton Nghiem among 343 rheumatology physician records in Massachusetts
Francine Ton Nghiem, MD 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. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2004 among the 212 with a school on file
- 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.
All 343 in Massachusetts → Every provider in Cambridge → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Lisa Fitzgerald, MDCambridge, MA 021381881691160
- Jonathan Hausmann, MDCambridge, MA 021381932367562
- Lama Mulki, M.D.Cambridge, MA 021381124259106
- Shiv Sehra, M.D.Cambridge, MA 021381609101732
- Suzanne Chapnick, M.D.Cambridge, MA 021391609912245
- Irving Fox, M.D.Cambridge, MA 021391144335035
- Jan Hillson, M.D.Cambridge, MA 021391912930157
- Lloyd Klickstein, MD, PHDCambridge, MA 021391467423418
Common questions
What is Francine Ton Nghiem, MD's NPI number?
Francine Ton Nghiem, MD's National Provider Identifier (NPI) is 1902862451, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Francine Ton Nghiem, MD located?
The NPPES record lists a practice address at 300 Mount Auburn St, Cambridge, MA, 02138. Phone: (617) 868-2650. Providers update this record themselves, so call before visiting.
How can I verify Francine Ton Nghiem, MD's license?
NPPES lists Massachusetts license number 159803, 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 Francine Ton Nghiem, MD prescribe under Medicare Part D?
In 2024, Francine Ton Nghiem, MD had 1,034 Medicare Part D claims for 124 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.