DR. DAL CHUN MD
NPI 1578587135
Ophthalmology - Retina Specialist in Vienna, VA
About Dr. Dal Chun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAL CHUN MD (NPI 1578587135) is an individual retina specialist in Vienna, Virginia, licensed in Virginia (0101232470) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Inova Fair Oaks Hospital, and is a graduate of Rutgers New Jersey Medical School (2000).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Dal Chun 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 Reassignment
Medicare enrollment records show Dal Chun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Greenbelt, MD 20770
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 69 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 16
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Inova Fair Oaks Hospital
Acute Care Hospitals · Fairfax, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22182 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Dal Chun's NPI number?
The NPI number for Dal Chun is 1578587135. It was assigned to this individual provider in the NPPES registry on July 27, 2006.
Where is Dal Chun located?
Dal Chun practices at 8219 Leesburg Pike Ste 120, Vienna, VA 22182. The listed phone number is (703) 564-4300.
What is Dal Chun's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is Dal Chun enrolled in Medicare?
Yes. Dal Chun 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 organization bills Medicare for Dal Chun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dal Chun reassigns Medicare benefits to The Retina Group Of Washington, PLLC (Greenbelt, MD). The 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 Dal Chun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dal Chun accept?
Health plans from Oscar Health list Dal Chun 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 Dal Chun affiliated with any hospitals?
According to CMS data, Dal Chun is affiliated with Inova Fair Oaks Hospital.
When was this NPI record last updated?
The NPPES record for Dal Chun was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Dal Chun, MD · NPI 1578587135
Retina Specialist physician in Vienna, Virginia. Individual provider, active in the CMS NPPES registry since July 27, 2006.
## Identity
- **NPI:** 1578587135 (Entity type: Individual)
- **Enumerated:** July 27, 2006
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **State license:** 0101232470 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 8219 LEESBURG PIKE STE 120, Vienna, VA 22182-2625
- **Phone:** (703) 564-4300 · **Fax:** (703) 206-7238
## 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:** The Retina Group Of Washington, PLLC (NPI 1225001654, Greenbelt, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rutgers New Jersey Medical School, class of 2000
## Record status
- **NPPES last updated:** October 5, 2026
- **Other identifiers:** Medicaid 041273800 (DC); Medicaid 334430400 (MD); Medicaid 30015814350002 (VA)
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Source: [NPI Profile](https://npiprofile.com/npi/1578587135) · Data from the CMS NPPES public registry.