James Mikolajczak, M.D.
Child & Adolescent Psychiatry Physician · Clayton, MO
James Mikolajczak, M.D. is a child & adolescent psychiatry physician with a practice address in Clayton, Missouri, and NPI 1760502207, issued on Mar 29, 2007. Check the license (Missouri 34665, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- James Mikolajczak
- Credential
- M.D.
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 34665 MO
Self-reported in NPPES; status is on the state search - Practice location
- 141 N Meramec Ave, Clayton, MO 63105
- Phone
- (314) 726-1666
- Enumerated
- Mar 29, 2007
- Record last updated
- Sep 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20070822001340); may accept Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 155 in Missouri → Look up another NPI →
Also registered at 141 N Meramec Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lisa CarrollProfessional Counselor1083083182
- Chelsea Deiters, M.A., CCC-SLPSpeech-Language Pathologist1285774802
- Patricia Dennis, PH.D.Clinical Social Worker1104949056
- Joshua Hawley, SLPSpeech-Language Pathologist1669439014
Verify James Mikolajczak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 34665Check 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 child & adolescent psychiatry physician in 2024
268 Medicare Part D claims for 14 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Diazepam33 claims
- Duloxetine Hcl21 claims
- Alprazolam15 claims
- Zolpidem Tartrate14 claims
- Escitalopram Oxalate13 claims
- Chlorpromazine Hcl12 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.
James Mikolajczak among 155 child & adolescent psychiatry physician records in Missouri
James Mikolajczak, M.D. is one of 155 child & adolescent psychiatry physician records with a practice address in Missouri. 72% 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 35% of them.
- NPI issued2007 · 35% of these records are older, 48% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1972 · median 2004 among the 65 with a school on file
- Record last updated2025 · 40% 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 Missouri 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 Missouri
There are 155 child & adolescent psychiatry physician records in Missouri.
All 155 in Missouri → Every provider in Clayton → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- John Rogakos, MDSt Louis, MO 631051427189331
- Sneha LopesSaint Louis, MO 631041407351141
- Basheer Lotfi-Fard, MDSaint Louis, MO 631041659598860
- Srijana O'Connell, M.D.Saint Louis, MO 631061598043648
- Cristiana Teodorescu, MDSaint Louis, MO 631041902964323
- Robert Brady, M.D.Saint Louis, MO 631031003820184
- Jacqueline Jacobs-Gourtzelis, M.D.Saint Louis, MO 631031245391952
- Kelly Botteron, MDSaint Louis, MO 631081013952860
Common questions
What is James Mikolajczak, M.D.'s NPI number?
James Mikolajczak, M.D.'s National Provider Identifier (NPI) is 1760502207, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Mikolajczak, M.D. located?
The NPPES record lists a practice address at 141 N Meramec Ave, Clayton, MO, 63105. Phone: (314) 726-1666. Providers update this record themselves, so call before visiting.
How can I verify James Mikolajczak, M.D.'s license?
NPPES lists Missouri license number 34665, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Mikolajczak, M.D. prescribe under Medicare Part D?
In 2024, James Mikolajczak, M.D. had 268 Medicare Part D claims for 14 beneficiaries; 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.