IRENE O HOU MD
NPI 1891724589
Internal Medicine - Rheumatology in Manchester, NH
About Irene O Hou Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IRENE O HOU MD (NPI 1891724589) is an individual rheumatology provider in Manchester, New Hampshire, licensed in New Hampshire (13075) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Irene O Hou Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Irene Hou reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hampstead, NH 03841
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Keene, NH 03431
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 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 2
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 03104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
MANCHESTER, NH 03104
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 Irene Hou's NPI number?
The NPI number for Irene Hou is 1891724589. It was assigned to this individual provider in the NPPES registry on July 3, 2006. The provider is also known as Irene Marie Orzano MD.
Where is Irene Hou located?
Irene Hou practices at 100 Hitchcock Way, Manchester, NH 03104. The listed phone number is (603) 695-2550.
What is Irene Hou's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Irene Hou enrolled in Medicare?
Yes. Irene Hou is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Irene Hou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Irene Hou reassigns Medicare benefits to 2 organizations: Mary Hitchcock Memorial Hospital (Hampstead, NH) and Dartmouth-Hitchcock Clinic (Keene, NH). 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 Irene Hou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Irene Hou accept?
Health plans from Harvard Pilgrim Health Care and Taro Health list Irene Hou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Irene Hou was last updated on March 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Irene O Hou, MD · NPI 1891724589
Rheumatology physician in Manchester, New Hampshire. Individual provider, active in the CMS NPPES registry since July 3, 2006.
## Identity
- **NPI:** 1891724589 (Entity type: Individual)
- **Enumerated:** July 3, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 13075 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 HITCHCOCK WAY, Manchester, NH 03104
- **Phone:** (603) 695-2550
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mary Hitchcock Memorial Hospital (NPI 1699584219, Hampstead, NH); Dartmouth-Hitchcock Clinic (NPI 1174176861, Keene, NH) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 28, 2021
- **Other identifiers:** Medicaid 30206033 (NH)
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Source: [NPI Profile](https://npiprofile.com/npi/1891724589) · Data from the CMS NPPES public registry.