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SHILPA DIWAN MD INC
NPI 1902458524
Psychiatry & Neurology - Psychiatry in Irvine, CA

Active since July 13, 2019
19772 MACARTHUR BLVD STE 220, IRVINE, CA 92612(949) 304-6727(949) 312-5638 Get Directions Write a Review

NPPES record last updated: June 4, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 4, 2020, Jul 13, 2019 (2 updates tracked since 2019).

About Shilpa Diwan Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SHILPA DIWAN MD INC (NPI 1902458524) is a healthcare organization registered as a psychiatry in Irvine, California and active in the NPI registry since July 2019. The organization lists Shilpa Diwan, President, as its authorized official.

NPPES Registry Identity

NPI1902458524
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameSHILPA DIWAN MD INC
Location Address19772 MACARTHUR BLVD STE 220Irvine, CA 92612-2405
Mailing Address6 Venture Ste 350Irvine, CA 92618-7350 · (949) 304-6727 · Fax (760) 859-3877
Phone(949) 304-6727
Fax(949) 312-5638
Organization SubpartNo
Authorized OfficialShilpa DiwanPresident · (949) 304-6727
Enumeration DateJuly 13, 2019
Last NPPES UpdateJune 4, 20202 updates tracked since enumeration
NPPES CertifiedJune 4, 2020
✔ NPI 1902458524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
19772 MACARTHUR BLVD STE 220, Irvine, CA 92612
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Shilpa Diwan Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Shilpa Diwan MD Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Shilpa Diwan, M.D, M.P.H
Psychiatry
NPI 1942457999
19772 MACARTHUR BLVD STE 220
Irvine, CA 92612
(949) 304-6727
✔ PECOS✔ Accepts MedicareSame address
Karlayren Rojo-Chand, LPCC
Mental Health Counselor
NPI 1922686591
19772 MACARTHUR BLVD STE 220
Irvine, CA 92612
(949) 304-6727
✔ PECOS✔ Accepts MedicareSame address
Bahram Marzban, PSY.D.
Clinical Psychologist
NPI 1427437243
22482 RIPPLING BRK
Lake Forest, CA 92630
(949) 350-3661
✔ PECOS✔ Accepts Medicare11 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Shilpa Diwan MD Inc's NPI number?

The NPI number for Shilpa Diwan MD Inc is 1902458524. It was assigned to this organization in the NPPES registry on July 13, 2019.

Where is Shilpa Diwan MD Inc located?

Shilpa Diwan MD Inc is located at 19772 Macarthur Blvd Ste 220, Irvine, CA 92612. The listed phone number is (949) 304-6727.

What is Shilpa Diwan MD Inc's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Shilpa Diwan MD Inc enrolled in Medicare?

Yes. Shilpa Diwan MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Shilpa Diwan MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Shilpa Diwan MD Inc, in Clinical Psychologist, Mental Health Counselor and Psychiatry. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Shilpa Diwan MD Inc was last updated on June 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.