NPI age
20 years
Enumerated 2006-01-25
● Active
Type 1 · Individual
Denise M Ryan, MD
Ryan 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
2010-04-23
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 · 2006 → 2026
2006-01Enumerated in NPPES
2006
2026
Where they practice
Practice location
12141 Richmond Ave
Houston, TX 770822408
Mailing address
1302 Waugh Dr, #625
Houston, TX 770193908
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 |
|---|---|---|
| 01 (TX) | 8G4114 | BC/BS PROVIDER NUMBER |
| 05 (TX) | 162091602 | |
| 01 (TX) | 1528038163 | TRICARE SOUTH |
| 01 (TX) | P00157289 | RAILROAD MEDICARE PROV # |
Practice context
Part of a multi-provider practice. 105 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.