DR. SIDDHARTH SINGH M.B., B.S.
NPI 1508023227
Internal Medicine - Gastroenterology in Scottsdale, AZ
About Dr. Siddharth Singh M.b., B.s. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SIDDHARTH SINGH M.B., B.S. (NPI 1508023227) is an individual gastroenterology provider in Scottsdale, Arizona, licensed in Arizona (77617) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in La Jolla, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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. Siddharth Singh M.b., B.s. 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 Reassignments
2Medicare enrollment records show Siddharth Singh reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Scottsdale, AZ 85259
- Reassigned Medicare billing, Arizona enrollment
- 1,792 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Regents Of The University Of California
- 1,051 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85259 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 5
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SCOTTSDALE, AZ 85259
SCOTTSDALE, AZ 85259
SCOTTSDALE, AZ 85259
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 Siddharth Singh's NPI number?
The NPI number for Siddharth Singh is 1508023227. It was assigned to this individual provider in the NPPES registry on May 20, 2008.
Where is Siddharth Singh located?
Siddharth Singh practices at 13400 E Shea Blvd, Scottsdale, AZ 85259. The listed phone number is (480) 301-8000.
What is Siddharth Singh's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Siddharth Singh enrolled in Medicare?
Yes. Siddharth Singh 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 organizations bill Medicare for Siddharth Singh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siddharth Singh reassigns Medicare benefits to 2 organizations: Mayo Clinic Arizona (Scottsdale, AZ) and Regents Of The University Of California - Ucsd Medical Group (San Diego, CA). Each 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 Siddharth Singh'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 Siddharth Singh was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.