Thor Christian Bergersen, M.D.
Psychiatry Physician · Needham, MA
Thor Christian Bergersen, M.D. is a psychiatry physician with a practice address in Needham, Massachusetts, and NPI 1013112796, issued on Jun 20, 2007. Check the license (Massachusetts 204123, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Thor Christian Bergersen
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 204123 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 2ND Ave, Needham, MA 02494
- Phone
- (781) 726-6698
- Enumerated
- Jun 20, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (781) 726-6725
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 75 2ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Birgeneau, PH.D.Psychologist1578893525
- Nichole Dacosta, NPAdult Health Nurse Practitioner1821195611
- Aletha Webb, ANP-BCAdult Health Nurse Practitioner1770815839
Verify Thor Christian Bergersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 204123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average psychiatry physician in 2024
530 Medicare Part D claims for 36 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Duloxetine Hcl45 claims
- Methylphenidate Hcl41 claims
- Dextroamphetamine-Amphet Er39 claims
- Dextroamphetamine-Amphetamine37 claims
- Sertraline Hcl34 claims
- Lorazepam31 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.
Thor Christian Bergersen among 2,736 psychiatry physician records in Massachusetts
Thor Christian Bergersen, M.D. 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 fileNo · 45% 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 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 psychiatry physician records list a practice address in Needham
They are 16 of the 1,223 NPPES records with a practice address in Needham, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Needham → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Philip Gottlieb, M.D.Needham, MA 024941114925138
- Barton Herskovitz, M.D.Needham, MA 024941043363476
- Nicholas Avery, MDWeston, MA 024931871645838
- Andrew Compaine, MDWeston, MA 024931841381977
- Sharon ElebyWeston, MA 024931518657345
- Mary England, M.D.Weston, MA 024931205027307
- Judith Huizenga, M.D.Weston, MA 024931326140815
- Martin Keller, MDWeston, MA 024931801926829
Common questions
What is Thor Christian Bergersen, M.D.'s NPI number?
Thor Christian Bergersen, M.D.'s National Provider Identifier (NPI) is 1013112796, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thor Christian Bergersen, M.D. located?
The NPPES record lists a practice address at 75 2ND Ave, Needham, MA, 02494. Phone: (781) 726-6698. Providers update this record themselves, so call before visiting.
How can I verify Thor Christian Bergersen, M.D.'s license?
NPPES lists Massachusetts license number 204123, 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 Thor Christian Bergersen, M.D. prescribe under Medicare Part D?
In 2024, Thor Christian Bergersen, M.D. had 530 Medicare Part D claims for 36 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.