DR. DEREK STUART WELSBIE MD, PHD
NPI 1588869945
Ophthalmology in Baltimore, MD
About Dr. Derek Stuart Welsbie Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DEREK STUART WELSBIE MD, PHD (NPI 1588869945) is an individual ophthalmology provider in Baltimore, Maryland, licensed in Maryland (D70539) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. Derek Stuart Welsbie Md, Phd 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 Derek Welsbie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 129 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 4
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 21287 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
BALTIMORE, MD 21287
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 Derek Welsbie's NPI number?
The NPI number for Derek Welsbie is 1588869945. It was assigned to this individual provider in the NPPES registry on June 17, 2007.
Where is Derek Welsbie located?
Derek Welsbie practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (410) 614-1342.
What is Derek Welsbie's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Derek Welsbie enrolled in Medicare?
Yes. Derek Welsbie 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 Derek Welsbie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Welsbie reassigns Medicare benefits to Regents Of The University Of California (San Diego, CA). 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 Derek Welsbie'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 Derek Welsbie was last updated on February 20, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Derek Stuart Welsbie, MD, PHD · NPI 1588869945
Ophthalmology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 17, 2007.
## Identity
- **NPI:** 1588869945 (Entity type: Individual)
- **Enumerated:** June 17, 2007
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** D70539 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 N WOLFE ST, Baltimore, MD 21287-0005
- **Phone:** (410) 614-1342 · **Fax:** (410) 502-8837
## 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:** Regents Of The University Of California (NPI 1699877621, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** February 20, 2013
- **Other identifiers:** Medicare PIN 206649ZASP (MD); Other 21986 (MD); Medicaid 038456900 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1588869945) · Data from the CMS NPPES public registry.