NPI age
20 years
Enumerated 2006-03-18
● Active
Type 1 · Individual
Marcus L Allen, MD
Allen is 1 of 14 ophthalmology providers in Dallas and 1 of 139 in Texas.
Primary specialty
Ophthalmology
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2024-07-23
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 139 active ophthalmology providers in Texas.
NPI age
20 years
↑ 4 yr above median (16 yr)
State licenses
1 state
28% of peers hold multiple states
Subspecialties
1
In the 77% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-03Enumerated in NPPES
2006
2026
Where they practice
Practice location
3414 Oak Grove Ave
Dallas, TX 752042375
Mailing address
3414 Oak Grove Ave
Dallas, TX 752042375
Additional practice locations
3 secondary locations on file with NPPES.
Location 2
1010 E Interstate 20
Arlington, TX 760182107
Location 3
400 W Lyndon B Johnson Fwy Ste 320
Irving, TX 750633717
Location 4
3331 Unicorn Lake Blvd
Denton, TX 762100102
Specialties
-
Ophthalmology PrimaryAn ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.
-
OphthalmologyAn 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...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 166084702 | |
| 05 (TX) | 166084703 | |
| 01 (TX) | P00361960 | RR MEDICARE GRP CJ5857 |
| 05 (TX) | 166084704 | |
| 01 (TX) | 8V2070 | BCBS TX GRP 00T587 |
Practice context
Part of a multi-provider practice. 7 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.