NPPES file of Aug 9, 2026

Marlene Emelina Casiano, M.D.

Psychiatry Physician · Barrington, IL

Marlene Emelina Casiano, M.D. is a psychiatry physician with a practice address in Barrington, Illinois, and NPI 1821234907, issued on Dec 19, 2008. Check the license (Illinois 036.065682, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821234907
Name
Marlene Emelina Casiano
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
036.065682 IL
Self-reported in NPPES; status is on the state search
Practice location
901 Fox Glen CT, Barrington, IL 60010
Phone
(847) 337-2561
Enumerated
Dec 19, 2008
Record last updated
Oct 7, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20040105000401); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 1981
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 901 Fox Glen CT

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Carol Angelescu, LSWSocial Worker1639611023
  2. Linda Benjamin, LCSWClinical Social Worker1346355823
  3. Denise Dobbels, LCSWClinical Social Worker1023232931
  4. Monica Grana, PSYDClinical Psychologist1083408348
  5. Kristin Heider, PSY.D.Clinical Psychologist1407330483
  6. Maya HufmanProfessional Counselor1447135892

Verify Marlene Emelina Casiano in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036.065682
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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25% fewer Medicare Part D claims than the average psychiatry physician in 2024

751 Medicare Part D claims for 67 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. Marlene Casiano751
  2. Specialty average1,000

Most prescribed

  1. Alprazolam75 claims
  2. Lorazepam69 claims
  3. Trazodone Hcl57 claims
  4. Venlafaxine Hcl Er55 claims
  5. Clonazepam51 claims
  6. Fluoxetine Hcl43 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.

Industry payments in 2024: $125.19

5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marlene Casiano$125.19
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Psychiatry Physician providers in Illinois

There are 2,147 psychiatry physician records in Illinois.

Other psychiatry physician records in Illinois

  1. Alexandra Aaronson, M.D.Chicago, IL1881937928
  2. Anthony Abadir, MDOak Park, IL1295312551
  3. Huma Abbas, M.D.Aurora, IL1609039163
  4. Jeff Abbott, M.D.Chicago, IL1265887509
  5. Kathryn AbbottChicago, IL1295537561
  6. Gil Abelita, MDBloomington, IL1619986551
  7. Dinuk Abeysekera, M.D.North Chicago, IL1366616534
  8. Patrick Abler, DOSpringfield, IL1770158537
  9. Rohit Abraham, MD, MPH, MATChicago, IL1013478932
  10. Richard AbramsChicago, IL1003992413

Common questions

What is Marlene Emelina Casiano, M.D.'s NPI number?

Marlene Emelina Casiano, M.D.'s National Provider Identifier (NPI) is 1821234907, issued on Dec 19, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Marlene Emelina Casiano, M.D. located?

The NPPES record lists a practice address at 901 Fox Glen CT, Barrington, IL, 60010. Phone: (847) 337-2561. Providers update this record themselves, so call before visiting.

How can I verify Marlene Emelina Casiano, M.D.'s license?

NPPES lists Illinois license number 036.065682, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marlene Emelina Casiano, M.D. prescribe under Medicare Part D?

In 2024, Marlene Emelina Casiano, M.D. had 751 Medicare Part D claims for 67 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.