JEFFREY MERRICK DYM MD
NPI 1124129788
Radiology - Diagnostic Radiology in Rancho Mission Viejo, CA
About Jeffrey Merrick Dym Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JEFFREY MERRICK DYM MD (NPI 1124129788) is an individual diagnostic radiology provider in Rancho Mission Viejo, California, licensed in California (A93960) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Laguna Niguel, and is a graduate of Georgetown University School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
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
Jeffrey Merrick Dym 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 Jeffrey Dym reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mission Viejo, CA 92691
- Reassigned Medicare billing, California enrollment
- 28 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 38 clinicians in this Medicare group
Fallbrook, CA 92028
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Beverly Radiology Medical Group Iii
- Also billed through NPI 1649599085 (California)
- 349 clinicians in this Medicare group
Los Angeles, CA 90025
- Reassigned Medicare billing, California enrollment
- 311 clinicians in this Medicare group
Encino, CA 91436
- Reassigned Medicare billing, California enrollment
- 329 clinicians in this Medicare group
Palm Desert, CA 92260
- Reassigned Medicare billing, California enrollment
- 278 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
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 238 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 219 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 69
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 92694 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RANCHO MISSION VIEJO, CA 92694
RANCHO MISSION VIEJO, CA 92694
RANCHO MISSION VIEJO, CA 92694
RANCHO MISSION VIEJO, CA 92694
RANCHO MISSION VIEJO, CA 92694
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 Jeffrey Dym's NPI number?
The NPI number for Jeffrey Dym is 1124129788. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is Jeffrey Dym located?
Jeffrey Dym practices at 28881 Airoso St Unit 110, Rancho Mission Viejo, CA 92694. The listed phone number is (949) 682-2600.
What is Jeffrey Dym's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Jeffrey Dym enrolled in Medicare?
Yes. Jeffrey Dym 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 Jeffrey Dym's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Dym reassigns Medicare benefits to 13 organizations: Coast Radiology Imaging And Intervention Inc (Mission Viejo, CA), Moran Rowen And Dorsey Inc (Orange, CA), Beverly Radiology Medical Group (Fallbrook, CA), Pronet Imaging Medical Group, Inc. (Los Angeles, CA), San Fernando Valley Interventional Radiology And Imaging Center (Encino, 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 Jeffrey Dym'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 Jeffrey Dym was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days 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.