NPI age
11 years
Enumerated 2015-01-10
● Active
Type 1 · Individual
Stephen Alcos, DO
Alcos is 1 of 1645 anesthesiology providers in Dallas and 1 of 6023 in Texas.
Primary specialty
Anesthesiology
Plus 2 subspecialties
Licensed in
TX, AZ
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-12-30
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 6023 active anesthesiology providers in Texas.
NPI age
11 years
↓ 7 yr below median (18 yr)
State licenses
2 states
Top 87% — 12% of peers are multi-state
Subspecialties
1
In the 31% of peers with subspecialties
NPI lifetime · 2015 → 2026
2015-01Enumerated in NPPES
2015
2026
Where they practice
Practice location
12222 Merit Dr Ste 600
Dallas, TX 752513294
Mailing address
2108 E Thomas Rd Ste 130
Phoenix, AZ 850160008
Additional practice locations
1 secondary location on file with NPPES.
Location 2
1919 E Thomas Rd
Phoenix, AZ 850167710
Specialties
-
Anesthesiology PrimaryAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk...
-
AnesthesiologyAn anesthesiologist who has had additional skill and experience in and is primarily concerned with the anesthesia, sedation, and pain management needs of infants and children. A pediatric anesthesiologist generally provides services...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (AZ) | 558431 |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 942 other active providers share this practice address in NPPES.
Recently enumerated nearby: 4 new anesthesiology providers have been added in Dallas in the last 180 days.
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Request a quote →How to verify this provider
- 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.