NPI age
20 years
Enumerated 2005-12-14
● Active
Type 1 · Individual
William O Blackstone, M.D.
Blackstone is 1 of 915 emergency medicine providers in Houston and 1 of 6039 in Texas.
Primary specialty
Emergency Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-11-11
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 6039 active emergency medicine providers in Texas.
NPI age
20 years
↑ 5 yr above median (15 yr)
State licenses
1 state
17% of peers hold multiple states
Subspecialties
0
43% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-12Enumerated in NPPES
2005
2026
Where they practice
Practice location
8850 Long Point Rd
Houston, TX 770553006
Mailing address
Po Box 200993
Houston, TX 772160993
Specialties
-
Emergency Medicine PrimaryAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department....
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 135667709 | |
| 01 (TX) | 1487639258 | TRICARE SOUTH |
| 01 (TX) | 8Z2091 | BCBSTX PROV NO |
| 01 (TX) | 1487639258 | BCBSTX |
Practice context
Part of a multi-provider practice. 23 other active providers share this practice address in NPPES.
Recently enumerated nearby: 5 new emergency medicine providers have been added in Houston 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.