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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALEXANDER VAN ON M.D.
NPI 1225071624
Ophthalmology in Baltimore, MD

Active since June 14, 2006
2411 W BELVEDERE AVENUE, 6TH FLOOR, MORTON MOWER, M.D., MOB, BALTIMORE, MD 21215(410) 601-8283(410) 601-8273 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Alexander Van On M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER VAN ON M.D. (NPI 1225071624) is an individual ophthalmology provider in Baltimore, Maryland, licensed in Maryland (D0066271) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1225071624
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameALEXANDER VAN ONCredential: M.D.
Location Address2411 W BELVEDERE AVENUE, 6TH FLOOR, MORTON MOWER, M.D., MOBBaltimore, MD 21215
Mailing Address2401 W Belvedere Ave, Attn: CredentialingBaltimore, MD 21215-5216 · (410) 601-5524 · Fax (410) 601-8946
Phone(410) 601-8283
Fax(410) 601-8273
Sole ProprietorNo
Enumeration DateJune 14, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1225071624 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in MD · D0066271
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
2411 W BELVEDERE AVENUE, 6TH FLOOR, Baltimore, MD 21215
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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.

DR. MARC J HIRSCHBEIN M.D.
Ophthalmology
2411 W BELVEDERE AVENUE, 6TH FLOOR, MORTON MOWER, M.D. MOB
BALTIMORE, MD 21215
Baltimore City (410) 601-8283
DR. JAMES W KARESH M.D.
Ophthalmology
2411 W BELVEDERE AVENUE, 6TH FLOOR, MORTON MOWER, M.D., MOB
BALTIMORE, MD 21215
Baltimore City (410) 601-8143

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 Alexander On's NPI number?

The NPI number for Alexander On is 1225071624. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is Alexander On located?

Alexander On practices at 2411 W Belvedere Avenue, 6th Floor Morton Mower, M.D., Mob, Baltimore, MD 21215. The listed phone number is (410) 601-8283.

What is Alexander On's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

When was this NPI record last updated?

The NPPES record for Alexander On was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 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.