NORTHWEST RHEUMATOLOGY PLLC
NPI 1083669949
Internal Medicine - Rheumatology in Tucson, AZ
About Northwest Rheumatology Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NORTHWEST RHEUMATOLOGY PLLC (NPI 1083669949) is a healthcare organization registered as a rheumatology in Tucson, Arizona and active in the NPI registry since May 2006. The organization lists Ulker Tok, Owner/president, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Northwest Rheumatology Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Northwest Rheumatology PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (2)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Northwest Rheumatology PLLC's NPI number?
The NPI number for Northwest Rheumatology PLLC is 1083669949. It was assigned to this organization in the NPPES registry on May 22, 2006.
Where is Northwest Rheumatology PLLC located?
Northwest Rheumatology PLLC is located at 403 W Cool Dr Ste 107, Tucson, AZ 85704. The listed phone number is (520) 792-2199.
What is Northwest Rheumatology PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Northwest Rheumatology PLLC enrolled in Medicare?
Yes. Northwest Rheumatology PLLC is registered in the Medicare PECOS enrollment system.
When is Northwest Rheumatology PLLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Arizona, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Northwest Rheumatology PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Northwest Rheumatology PLLC, in Nurse Practitioner and Rheumatology. A 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 the clinician's services. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Northwest Rheumatology PLLC accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Imperial Insurance Companies, Inc. list Northwest Rheumatology PLLC 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 Northwest Rheumatology PLLC was last updated on June 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Northwest Rheumatology Pllc · NPI 1083669949
Rheumatology organization in Tucson, Arizona. Organization record, active in the CMS NPPES registry since May 22, 2006.
## Identity
- **NPI:** 1083669949 (Entity type: Organization)
- **Enumerated:** May 22, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **Organization subpart:** No
- **Authorized official:** Ulker Tok, OWNER/PRESIDENT
## Practice location
- **Address:** 403 W COOL DR STE 107, Tucson, AZ 85704-6551
- **Phone:** (520) 792-2199
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (Non-DME Part B, Arizona, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (1), Rheumatology (1); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083669949) · Data from the CMS NPPES public registry.