Karen W. Kwok, M.D.
Psychiatry Physician · Boston, MA
Karen W. Kwok, M.D. is a psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1922034396, issued on Jun 25, 2006. Check the license (Massachusetts 227507, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Karen W. Kwok
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 227507 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Boston Medical Ctr PL, Boston, MA 02118
- Phone
- (617) 414-5245
- Enumerated
- Jun 25, 2006
- Record last updated
- Dec 15, 2023
- Fax
- (617) 414-5245
- Medicaid ID
- 110133256A MA
- Medicare enrollment
- Enrolled (PECOS I20060914000465); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 1 Boston Medical Ctr PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Priscilla AguilarStudent in an Organized Health Care Education/Training Program1033838792
Verify Karen W. Kwok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 227507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average psychiatry physician in 2024
1,009 Medicare Part D claims for 122 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
- Quetiapine Fumarate119 claims
- Sertraline Hcl68 claims
- Aripiprazole66 claims
- Clonazepam66 claims
- Risperidone42 claims
- Olanzapine38 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
- Boston University Psychiatry Associates, Inc.Boston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen W. Kwok among 2,736 psychiatry physician records in Massachusetts
Karen W. Kwok, 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 51% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2002 · median 2005 among the 1,219 with a school on file
- Record last updated2023 · 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
- Isidore Berenbaum, M.D.Boston, MA 021181245256668
- James Bonnar, MDBoston, MA 021181285662023
- Andrew Brown, M.D.Boston, MA 021181508805698
- Anne Calabresi, MDBoston, MA 021181245296441
- Todd Carranza, M.D.Boston, MA 021181659313047
- David Henderson, MDBoston, MA 021181699759076
- Karen Henley, MDBoston, MA 021181215919766
- Robert Irvin, M.D.Boston, MA 021181063459170
Common questions
What is Karen W. Kwok, M.D.'s NPI number?
Karen W. Kwok, M.D.'s National Provider Identifier (NPI) is 1922034396, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen W. Kwok, M.D. located?
The NPPES record lists a practice address at 1 Boston Medical Ctr PL, Boston, MA, 02118. Phone: (617) 414-5245. Providers update this record themselves, so call before visiting.
How can I verify Karen W. Kwok, M.D.'s license?
NPPES lists Massachusetts license number 227507, 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 Karen W. Kwok, M.D. prescribe under Medicare Part D?
In 2024, Karen W. Kwok, M.D. had 1,009 Medicare Part D claims for 122 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.