Katherine Olivia Mallory, M.D.
Child & Adolescent Psychiatry Physician · Washington, DC
Katherine Olivia Mallory, M.D. is a child & adolescent psychiatry physician with a practice address in Washington, District of Columbia, and NPI 1518128131, issued on Jun 17, 2008. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Katherine Olivia Mallory
- Credential
- M.D.
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 261459 MA
Self-reported in NPPES; status is on the state search - Practice location
- 4545 42ND St NW, Washington, DC 20016
- Phone
- (917) 833-6411
- Enumerated
- Jun 17, 2008
- Record last updated
- Jun 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 71 in District of Columbia → Look up another NPI →
Also registered at 4545 42ND St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeanmarie Amiri, PH.D.Psychologist1326167693
- Sirus Amiri, M.D.Pediatric Cardiology Physician1770503245
- Neil Bernstein, PHDClinical Psychologist1184829954
- Marilyn Bono, MSW, BCDClinical Social Worker1801843347
- Vincent Bono, M.D.Psychiatry Physician1992843890
- Traci Callandrillo, PH.D.Counseling Psychologist1447531371
Verify Katherine Olivia Mallory in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of 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
78% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
112 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D.
Most prescribed
- Olanzapine12 claims
- Fluoxetine Hcl11 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.
Katherine Olivia Mallory among 71 child & adolescent psychiatry physician records in District of Columbia
Katherine Olivia Mallory, M.D. is one of 71 child & adolescent psychiatry physician records with a practice address in District of Columbia. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 37% of them.
- NPI issued2008 · 37% of these records are older, 48% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2018 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in District of Columbia
There are 71 child & adolescent psychiatry physician records in District of Columbia.
All 71 in District of Columbia → Every provider in Washington → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Cheryl Collins, MDWashington, DC 200161790850394
- Jonathan Extein, MDWashington, DC 200161871170555
- Shahbaz Khan, MBBSWashington, DC 200161164597167
- Donald McKnew, MDWashington, DC 200161619171782
- Christopher Raczynski, M.D.Washington, DC 200161689866410
- Stephen Cozza, M.D.Washington, DC 200151922105345
- Kristen EverettWashington, DC 200151437683372
- Enrico Suardi, MD MSWashington, DC 200151144489980
Common questions
What is Katherine Olivia Mallory, M.D.'s NPI number?
Katherine Olivia Mallory, M.D.'s National Provider Identifier (NPI) is 1518128131, issued on Jun 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Olivia Mallory, M.D. located?
The NPPES record lists a practice address at 4545 42ND St NW, Washington, DC, 20016. Phone: (917) 833-6411. Providers update this record themselves, so call before visiting.
How can I verify Katherine Olivia Mallory, M.D.'s license?
Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Olivia Mallory, M.D. prescribe under Medicare Part D?
In 2024, Katherine Olivia Mallory, M.D. had 112 Medicare Part D claims; the average among child & adolescent psychiatry physician prescribers was 504. 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.