James Niels Rosenquist, MD
Psychiatry Physician · Boston, MA
James Niels Rosenquist, MD is a psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1346376712, issued on Feb 27, 2007. Check the license (Massachusetts L-224884, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James Niels Rosenquist
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- L-224884 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2066
- Enumerated
- Feb 27, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080616000068); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
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Verify James Niels Rosenquist in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license L-224884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average psychiatry physician in 2024
451 Medicare Part D claims for 37 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Sertraline Hcl42 claims
- Dextroamphetamine-Amphetamine38 claims
- Aripiprazole37 claims
- Trazodone Hcl29 claims
- Buspirone Hcl28 claims
- Duloxetine Hcl28 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
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Niels Rosenquist among 2,736 psychiatry physician records in Massachusetts
James Niels Rosenquist, MD is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 37% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2005 · median 2005 among the 1,219 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 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
845 psychiatry physician records list a practice address in Boston
They are 845 of the 41,865 NPPES records with a practice address in Boston, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Boston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Steven Ablon, MDBoston, MA 021141083604839
- Barbara Beck, MDBoston, MA 021141720078272
- Judith Edersheim, MDBoston, MA 021141154311835
- Karleyton Evans, MDBoston, MA 021141407846058
- James Groves, MDBoston, MA 021141013906015
- John Herman, MDBoston, MA 021141275523961
- Rakesh Karmacharya, MD PHDBoston, MA 021141720078389
- Vaughn Mankey, MDBoston, MA 021141225028954
Common questions
What is James Niels Rosenquist, MD's NPI number?
James Niels Rosenquist, MD's National Provider Identifier (NPI) is 1346376712, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Niels Rosenquist, MD located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2066. Providers update this record themselves, so call before visiting.
How can I verify James Niels Rosenquist, MD's license?
NPPES lists Massachusetts license number L-224884, 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 James Niels Rosenquist, MD prescribe under Medicare Part D?
In 2024, James Niels Rosenquist, MD had 451 Medicare Part D claims for 37 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.