Derek Stuart Welsbie, MD, PHD
Ophthalmology Physician · Baltimore, MD
Derek Stuart Welsbie, MD, PHD is an ophthalmology physician with a practice address in Baltimore, Maryland, and NPI 1588869945, issued on Jun 17, 2007. Check the license (Maryland D70539, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Derek Stuart Welsbie
- Credential
- MD, PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- D70539 MD
21986 MD
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolfe St, Baltimore, MD 21287
- Phone
- (410) 614-1342
- Enumerated
- Jun 17, 2007
- Record last updated
- Feb 20, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (410) 502-8837
- Medicaid ID
- 038456900 MD
- Medicare enrollment
- Enrolled (PECOS I20160831000738); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 588 in Maryland → Look up another NPI →
Also registered at 600 N Wolfe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Derek Stuart Welsbie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D70539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average ophthalmology physician in 2024
617 Medicare Part D claims for 156 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Latanoprost242 claims
- Dorzolamide-Timolol79 claims
- Rhopressa61 claims
- Timolol Maleate35 claims
- Prednisolone Acetate33 claims
- Brimonidine Tartrate28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $142.33
1 payment: food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derek Stuart Welsbie among 588 ophthalmology physician records in Maryland
Derek Stuart Welsbie, MD, PHD is one of 588 ophthalmology physician records with a practice address in Maryland. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 34% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2002 among the 369 with a school on file
- Record last updated2013 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Maryland
There are 588 ophthalmology physician records in Maryland.
All 588 in Maryland → Every provider in Baltimore → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Esen Akpek, M.D.Baltimore, MD 212871851356943
- John Baer, M.D.Baltimore, MD 212871013984848
- Heather Bartlett Casparis, M.D.Baltimore, MD 212871629033147
- Neil Bressler, M.D.Baltimore, MD 212871790742245
- Peter Campochiaro, M.D.Baltimore, MD 212871598723850
- Marianne Cowley, MDBaltimore, MD 212871811964448
- Earl Craven, MDBaltimore, MD 212871457354821
- Morton Goldberg, M.D.Baltimore, MD 212871578516696
Common questions
What is Derek Stuart Welsbie, MD, PHD's NPI number?
Derek Stuart Welsbie, MD, PHD's National Provider Identifier (NPI) is 1588869945, issued on Jun 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Derek Stuart Welsbie, MD, PHD located?
The NPPES record lists a practice address at 600 N Wolfe St, Baltimore, MD, 21287. Phone: (410) 614-1342. Providers update this record themselves, so call before visiting.
How can I verify Derek Stuart Welsbie, MD, PHD's license?
NPPES lists Maryland license number D70539, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Derek Stuart Welsbie, MD, PHD prescribe under Medicare Part D?
In 2024, Derek Stuart Welsbie, MD, PHD had 617 Medicare Part D claims for 156 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.