DR. SHIREENA DESAI M.D.
NPI 1144457995
Internal Medicine - Gastroenterology in Irvine, CA
About Dr. Shireena Desai M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHIREENA DESAI M.D. (NPI 1144457995) is an individual gastroenterology provider in Irvine, California, licensed in California (A114928) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Shireena Desai M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Shireena Desai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92618 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IRVINE, CA 92618
IRVINE, CA 92618
IRVINE, CA 92618
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 Shireena Desai's NPI number?
The NPI number for Shireena Desai is 1144457995. It was assigned to this individual provider in the NPPES registry on June 19, 2009.
Where is Shireena Desai located?
Shireena Desai practices at 6650 Alton Pkwy Gastroenterology, Mob 2, Irvine, CA 92618. The listed phone number is (949) 932-5000.
What is Shireena Desai's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Shireena Desai enrolled in Medicare?
Yes. Shireena Desai is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Shireena Desai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shireena Desai reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, CA). The 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 Shireena Desai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Shireena Desai was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Shireena Desai, M.D. · NPI 1144457995
Gastroenterology physician in Irvine, California. Individual provider, active in the CMS NPPES registry since June 19, 2009.
## Identity
- **NPI:** 1144457995 (Entity type: Individual)
- **Enumerated:** June 19, 2009
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** A114928 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 6650 ALTON PKWY, GASTROENTEROLOGY, MOB 2, Irvine, CA 92618-3734
- **Phone:** (949) 932-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2009
## Record status
- **NPPES last updated:** November 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1144457995) · Data from the CMS NPPES public registry.