NPPES file of Aug 9, 2026

Diana Krishnan, APRN, PMHNP-BC, LCSW

Psychiatric/Mental Health Nurse Practitioner · Chicago, IL

Diana Krishnan, APRN, PMHNP-BC, LCSW is a psychiatric/mental health nurse practitioner with a practice address in Chicago, Illinois, and NPI 1235908229, issued on Jan 1, 2024. Check the license (Illinois 209028969, as entered in NPPES) with the Illinois board that licenses this profession; 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
1235908229
Name
Diana Krishnan
Credential
APRN, PMHNP-BC, LCSW
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
209028969 IL
Self-reported in NPPES; status is on the state search
Practice location
661 W Lake St Ste 2S, Chicago, IL 60661
Phone
(312) 736-2865
Enumerated
Jan 1, 2024
Record last updated
Jan 13, 2025
Fax
(630) 761-7549
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 661 W Lake St Ste 2S

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

  1. Christine Aiello, LMFTMarriage & Family Therapist1598314106
  2. Erin Alexander-Holton, PSYDPsychologist1427091867
  3. Jose Arroyo, PHDClinical Psychologist1700412871
  4. Ari Bar-LevMarriage & Family Therapist1477105120
  5. Heather Barahmand, LPCMental Health Counselor1639915192
  6. Tracy BibbsProfessional Counselor1013637198

Verify Diana Krishnan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 209028969
    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
Find the Illinois license search

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93% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

67 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. Diana Krishnan67
  2. Specialty average906

Most prescribed

  1. Methylphenidate Hcl14 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.

Diana Krishnan among 1,530 psychiatric/mental health nurse practitioner records in Illinois

Diana Krishnan, APRN, PMHNP-BC, LCSW is one of 1,530 psychiatric/mental health nurse practitioner records with a practice address in Illinois. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 67% of them.

  • NPI issued2024 · 67% of these records are older, 23% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 60% of these records are
  • Record last updated2025 · 17% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in Illinois

There are 1,530 psychiatric/mental health nurse practitioner records in Illinois.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Sanquisha Faison, PMHNP-BCChicago, IL 606611548119654
  2. Angelica Pucha, PMHNP-BCChicago, IL 606611407291933
  3. Deborah Allen, APRNChicago, IL 606601477913820
  4. Nathaniel Austin, APRN, FNP-CChicago, IL 606601225776503
  5. Gian Bonador, APNChicago, IL 606601770068421
  6. Jill DegenChicago, IL 606601811292717
  7. Zina Mansoor, APRNChicago, IL 606601750017638
  8. Loretta Armstrong, APRNChicago, IL 606591003591017

Common questions

What is Diana Krishnan, APRN, PMHNP-BC, LCSW's NPI number?

Diana Krishnan, APRN, PMHNP-BC, LCSW's National Provider Identifier (NPI) is 1235908229, issued on Jan 1, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Diana Krishnan, APRN, PMHNP-BC, LCSW located?

The NPPES record lists a practice address at 661 W Lake St Ste 2S, Chicago, IL, 60661. Phone: (312) 736-2865. Providers update this record themselves, so call before visiting.

How can I verify Diana Krishnan, APRN, PMHNP-BC, LCSW's license?

NPPES lists Illinois license number 209028969, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Diana Krishnan, APRN, PMHNP-BC, LCSW prescribe under Medicare Part D?

In 2024, Diana Krishnan, APRN, PMHNP-BC, LCSW had 67 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.