GRANT JUSTIN M.D.
NPI 1891144515
Ophthalmology - Retina Specialist in Bethesda, MD
About Grant Justin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRANT JUSTIN M.D. (NPI 1891144515) is an individual retina specialist in Bethesda, Maryland, licensed in Maryland (D0098715) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (2016).
NPPES Registry Identity
Specialties & Licenses 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
Grant Justin M.d. 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
2Medicare enrollment records show Grant Justin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 1,417 clinicians in this Medicare group
Hagerstown, MD 21740
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Robert E Parnes MD LLC
- 4 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20889 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Grant Justin's NPI number?
The NPI number for Grant Justin is 1891144515. It was assigned to this individual provider in the NPPES registry on June 3, 2016.
Where is Grant Justin located?
Grant Justin practices at 104 Wood Rd, Bethesda, MD 20889. The listed phone number is (609) 468-2468.
What is Grant Justin's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is Grant Justin enrolled in Medicare?
Yes. Grant Justin 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 Grant Justin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Justin reassigns Medicare benefits to 2 organizations: Children's Hospital (Washington, DC) and Robert E. Parnes, M.D., LLC (Hagerstown, MD). 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 Grant Justin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grant Justin accept?
Health plans from Highmark Blue Cross Blue Shield West Virginia list Grant Justin 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 Grant Justin was last updated on May 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Grant Justin, M.D. · NPI 1891144515
Retina Specialist physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since June 3, 2016.
## Identity
- **NPI:** 1891144515 (Entity type: Individual)
- **Enumerated:** June 3, 2016
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **State license:** D0098715 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 104 WOOD RD, Bethesda, MD 20889-0001
- **Phone:** (609) 468-2468
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Hospital (NPI 1780800128, Washington, DC); Robert E. Parnes, M.D., LLC (NPI 1205857349, Hagerstown, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Uniformed Services Uhs Fe Hebert School Of Med, class of 2016
## Record status
- **NPPES last updated:** May 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891144515) · Data from the CMS NPPES public registry.