DR. REN M ARIIZUMI MD
NPI 1255832762
Anesthesiology in Bethesda, MD
About Dr. Ren M Ariizumi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REN M ARIIZUMI MD (NPI 1255832762) is an individual anesthesiology provider in Bethesda, Maryland, licensed in Wisconsin (72402-20) and active in the NPI registry since February 2018. He is enrolled in Medicare PECOS, is affiliated with Cleveland Clinic, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
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. Ren M Ariizumi 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
14Medicare enrollment records show Ren Ariizumi reassigns Medicare billing to 14 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20016
- Reassigned Medicare billing, Virginia enrollment
- 119 clinicians in this Medicare group
Kensington, MD 20895
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- Also billed through NPI 1225156367 (Virginia), NPI 1114677572 (Virginia)
- 2,492 clinicians in this Medicare group
Arlington, VA 22205
- Reassigned Medicare billing, District of Columbia enrollment
- 158 clinicians in this Medicare group
Fairfax, VA 22033
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 318 clinicians in this Medicare group
Woodbridge, VA 22191
- Reassigned Medicare billing, Virginia enrollment
- 170 clinicians in this Medicare group
Ranson, WV 25438
- Reassigned Medicare billing, West Virginia enrollment
- 2,471 clinicians in this Medicare group
Virginia Beach, VA 23456
- Reassigned Medicare billing, Virginia enrollment
- 707 clinicians in this Medicare group
Cleveland, OH 44195
- Reassigned Medicare billing, Ohio enrollment
- 7,608 clinicians in this Medicare group
Juneau, WI 53039
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 clinicians in this Medicare group
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cleveland Clinic
Acute Care Hospitals · Cleveland, OHHillcrest Hospital
Acute Care Hospitals · Mayfield Heights, OHSentara Northern Virginia Medical Center
Acute Care Hospitals · Woodbridge, VAMarshfield Medical Center - Minocqua
Acute Care Hospitals · Minocqua, WIMedicare 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.
BETHESDA, MD 20889
BETHESDA, MD 20889
BETHESDA, MD 20889
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 Ren Ariizumi's NPI number?
The NPI number for Ren Ariizumi is 1255832762. It was assigned to this individual provider in the NPPES registry on February 21, 2018.
Where is Ren Ariizumi located?
Ren Ariizumi practices at 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (301) 295-0537.
What is Ren Ariizumi's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ren Ariizumi enrolled in Medicare?
Yes. Ren Ariizumi 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 Ren Ariizumi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ren Ariizumi reassigns Medicare benefits to 14 organizations: Surgical Anesthesia Associates, PLLC (Washington, DC), Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Kensington, MD), Dominion Anesthesia, PLLC (Arlington, VA), Inova Cares - Community (Fairfax, VA), Premier Anesthesia Of Virginia LLC (Woodbridge, VA) and 9 more organizations, listed in the Medicare section above. 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 Ren Ariizumi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ren Ariizumi accept?
Health plans from Oscar Health and Peak Health Insurance list Ren Ariizumi 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.
Is Ren Ariizumi affiliated with any hospitals?
According to CMS data, Ren Ariizumi is affiliated with Cleveland Clinic, Hillcrest Hospital, Sentara Northern Virginia Medical Center and Marshfield Medical Center - Minocqua.
When was this NPI record last updated?
The NPPES record for Ren Ariizumi was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Ren M Ariizumi, MD · NPI 1255832762
Anesthesiology physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since February 21, 2018.
## Identity
- **NPI:** 1255832762 (Entity type: Individual)
- **Enumerated:** February 21, 2018
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 72402-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 8901 WISCONSIN AVE, Bethesda, MD 20889-0004
- **Phone:** (301) 295-0537
## 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:** 14 organizations under Medicare reassignment (form CMS-855R): Surgical Anesthesia Associates, PLLC (NPI 1811930647, Washington, DC); Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1376601872, Kensington, MD); Dominion Anesthesia, PLLC (NPI 1073554952, Arlington, VA); Inova Cares - Community (NPI 1861131906, Fairfax, VA); Premier Anesthesia Of Virginia LLC (NPI 1255986147, Woodbridge, VA); and 9 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1255832762) · Data from the CMS NPPES public registry.