JAMES HENRY ROUM MD
NPI 1477633626
Internal Medicine - Critical Care Medicine in Orange, CA
About James Henry Roum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES HENRY ROUM MD (NPI 1477633626) is an individual critical care medicine provider in Orange, California, licensed in California (G62370) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
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
James Henry Roum Md 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
5Medicare enrollment records show James Roum reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 250 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 187 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 525 clinicians in this Medicare group
Torrance, CA 90503
- Reassigned Medicare billing, California enrollment
- 13 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 3
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 92868 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.
Reported Quality Measures
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
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 James Roum's NPI number?
The NPI number for James Roum is 1477633626. It was assigned to this individual provider in the NPPES registry on October 16, 2006.
Where is James Roum located?
James Roum practices at 1010 W La Veta Ave Ste 750, Orange, CA 92868. The listed phone number is (714) 639-9401.
What is James Roum's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is James Roum enrolled in Medicare?
Yes. James Roum 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 James Roum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Roum reassigns Medicare benefits to 5 organizations: Integrated Critical Care And Pulmonary Specialists Inc. (Orange, CA), The Regents Of The University Of California-Irvine (Orange, CA), Southern California Hospitalist Network Medical Group Inc (Orange, CA), Uc Regents (Orange, CA) and Southbay Critical Care A Medical Partnership (Torrance, 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 James Roum'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 James Roum was last updated on July 21, 2022. 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.
# James Henry Roum, MD · NPI 1477633626
Critical Care Medicine physician in Orange, California. Individual provider, active in the CMS NPPES registry since October 16, 2006.
## Identity
- **NPI:** 1477633626 (Entity type: Individual)
- **Enumerated:** October 16, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** G62370 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1010 W LA VETA AVE STE 750, Orange, CA 92868-4312
- **Phone:** (714) 639-9401 · **Fax:** (714) 919-8804
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Integrated Critical Care And Pulmonary Specialists Inc. (NPI 1902313919, Orange, CA); The Regents Of The University Of California-Irvine (NPI 1154479723, Orange, CA); Southern California Hospitalist Network Medical Group Inc (NPI 1790880458, Orange, CA); Uc Regents (NPI 1003864174, Orange, CA); Southbay Critical Care A Medical Partnership (NPI 1568174282, Torrance, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 1986
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Other CG5665 (CA); Other G62370 (CA); Medicaid 1912919804 (CA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1477633626) · Data from the CMS NPPES public registry.