DONALD R MASSEE MD
NPI 1801897731
Radiology - Diagnostic Radiology in Riverside, CA
About Donald R Massee Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DONALD R MASSEE MD (NPI 1801897731) is an individual diagnostic radiology provider in Riverside, California, licensed in California (G60908) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 8
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
Donald R Massee 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
13Medicare enrollment records show Donald Massee reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Redlands, CA 92374
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1649599085 (California), NPI 1972826774 (California)
- 335 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Palm Desert, CA 92260
- Reassigned Medicare billing, California enrollment
- 278 clinicians in this Medicare group
Encino, CA 91436
- Reassigned Medicare billing, California enrollment
- 329 clinicians in this Medicare group
Tehachapi, CA 93561
- Reassigned Medicare billing, California enrollment
- 252 clinicians in this Medicare group
Fresno, CA 93710
- Reassigned Medicare billing, California enrollment
- 232 clinicians in this Medicare group
Modesto, CA 95350
- Reassigned Medicare billing, California enrollment
- 219 clinicians in this Medicare group
Gilbert, AZ 85234
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 219 clinicians in this Medicare group
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 238 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 54
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 92501 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
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 Donald Massee's NPI number?
The NPI number for Donald Massee is 1801897731. It was assigned to this individual provider in the NPPES registry on August 2, 2005.
Where is Donald Massee located?
Donald Massee practices at 4445 Magnolia Ave, Riverside, CA 92501. The listed phone number is (951) 788-3400.
What is Donald Massee's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Donald Massee enrolled in Medicare?
Yes. Donald Massee 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 Donald Massee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donald Massee reassigns Medicare benefits to 13 organizations: Beverly Radiology Medical Group III (Redlands, CA), Cedars-Sinai Medical Care Foundation (Los Angeles, CA), Desert Advanced Imaging Medical Center (Palm Desert, CA), San Fernando Valley Interventional Radiology And Imaging Center (Encino, CA), Kern Radiology Medical Group, Inc (Tehachapi, CA) and 8 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 Donald Massee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Donald Massee accept?
Health plans from Blue Cross Blue Shield of Arizona list Donald Massee 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 Donald Massee was last updated on June 16, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.