DR. JUSTIN AARON SIEGAL MD
NPI 1639184518
Radiology - Diagnostic Radiology in Oakland, CA
About Dr. Justin Aaron Siegal Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JUSTIN AARON SIEGAL MD (NPI 1639184518) is an individual diagnostic radiology provider in Oakland, California, licensed in California (C168787) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Asante Rogue Regional Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 7
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. Justin Aaron Siegal 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
23Medicare enrollment records show Justin Siegal reassigns Medicare billing to 23 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Santa Rosa, CA 95405
- Reassigned Medicare billing, Washington enrollment
- 72 clinicians in this Medicare group
Medford, OR 97504
- Reassigned Medicare billing, Washington enrollment
- 55 clinicians in this Medicare group
Medford, OR 97504
- Reassigned Medicare billing, Washington enrollment
- 69 clinicians in this Medicare group
Vancouver, WA 98662
- Reassigned Medicare billing, Washington enrollment
- 204 clinicians in this Medicare group
Kennewick, WA 99336
- Reassigned Medicare billing, Washington enrollment
- 589 clinicians in this Medicare group
Yakima, WA 98902
- Reassigned Medicare billing, Washington enrollment
- 565 clinicians in this Medicare group
Olympia, WA 98506
- Reassigned Medicare billing, Washington enrollment
- 186 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 22
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Asante Rogue Regional Medical Center
Acute Care Hospitals · Medford, ORSwedish Medical Center / Cherry Hill
Acute Care Hospitals · Seattle, WAYakima Valley Memorial
Acute Care Hospitals · Yakima, WAOverlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAOlympic Medical Center
Acute Care Hospitals · Port Angeles, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94609 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.
OAKLAND, CA 94609
OAKLAND, CA 94609
OAKLAND, CA 94609
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 Justin Siegal's NPI number?
The NPI number for Justin Siegal is 1639184518. It was assigned to this individual provider in the NPPES registry on July 29, 2006.
Where is Justin Siegal located?
Justin Siegal practices at 747 52nd St, Oakland, CA 94609. The listed phone number is (510) 428-3000.
What is Justin Siegal's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Justin Siegal enrolled in Medicare?
Yes. Justin Siegal 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 Justin Siegal's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Siegal reassigns Medicare benefits to 23 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), County Of Santa Clara (Palo Alto, CA), Radia California Radiology Medical Group Inc (Santa Rosa, CA), Medford Radiological Group, PC (Medford, OR) and 18 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 Justin Siegal's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Justin Siegal accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Health Advantage, Octave and Premera Blue Cross Blue Shield of Alaska list Justin Siegal 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 Justin Siegal affiliated with any hospitals?
According to CMS data, Justin Siegal is affiliated with Asante Rogue Regional Medical Center, Swedish Medical Center / Cherry Hill, Yakima Valley Memorial, Overlake Hospital Medical Center and Olympic Medical Center.
When was this NPI record last updated?
The NPPES record for Justin Siegal was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Justin Aaron Siegal, MD · NPI 1639184518
Diagnostic Radiology physician in Oakland, California. Individual provider, active in the CMS NPPES registry since July 29, 2006.
## Identity
- **NPI:** 1639184518 (Entity type: Individual)
- **Enumerated:** July 29, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** C168787 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 747 52ND ST, Oakland, CA 94609-1809
- **Phone:** (510) 428-3000
## 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:** 23 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); County Of Santa Clara (NPI 1285228080, Palo Alto, CA); Radia California Radiology Medical Group Inc (NPI 1740982032, Santa Rosa, CA); Medford Radiological Group, PC (NPI 1407938111, Medford, OR); and 18 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** May 21, 2026
- **Other identifiers:** Other US7398683 (WA); Other 234770 (WA); Other 341472 (WA); and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1639184518) · Data from the CMS NPPES public registry.