DR. HENRY KOJI NIHO M.D.
NPI 1609040450
Internal Medicine - Gastroenterology in Irvine, CA
About Dr. Henry Koji Niho M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HENRY KOJI NIHO M.D. (NPI 1609040450) is an individual gastroenterology provider in Irvine, California, licensed in California (A78576) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2000).
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. Henry Koji Niho 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 Henry Niho 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
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 Henry Niho's NPI number?
The NPI number for Henry Niho is 1609040450. It was assigned to this individual provider in the NPPES registry on April 14, 2008.
Where is Henry Niho located?
Henry Niho practices at 6650 Alton Pkwy Alton Sand Canyon Mob2, Irvine, CA 92618. The listed phone number is (949) 932-2604.
What is Henry Niho's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Henry Niho enrolled in Medicare?
Yes. Henry Niho 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 Henry Niho's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Henry Niho 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 Henry Niho'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 Henry Niho was last updated on December 3, 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. Henry Koji Niho, M.D. · NPI 1609040450
Gastroenterology physician in Irvine, California. Individual provider, active in the CMS NPPES registry since April 14, 2008.
## Identity
- **NPI:** 1609040450 (Entity type: Individual)
- **Enumerated:** April 14, 2008
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** A78576 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 6650 ALTON PKWY, ALTON SAND CANYON MOB2, Irvine, CA 92618-3734
- **Phone:** (949) 932-2604
## 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:** Tufts University School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** December 3, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1609040450) · Data from the CMS NPPES public registry.