DENISE M RYAN MD
NPI 1528038163
Emergency Medicine in Houston, TX
About Denise M Ryan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DENISE M RYAN MD (NPI 1528038163) is an individual emergency medicine provider in Houston, Texas, licensed in Texas (L7148) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Denise M Ryan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Denise Ryan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77024
- Reassigned Medicare billing, Texas enrollment
- 408 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 1,452 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77082 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HOUSTON, TX 77082
HOUSTON, TX 77082
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 Denise Ryan's NPI number?
The NPI number for Denise Ryan is 1528038163. It was assigned to this individual provider in the NPPES registry on January 25, 2006.
Where is Denise Ryan located?
Denise Ryan practices at 12141 Richmond Ave, Houston, TX 77082. The listed phone number is (281) 558-3444.
What is Denise Ryan's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Denise Ryan enrolled in Medicare?
Yes. Denise Ryan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Denise Ryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Denise Ryan reassigns Medicare benefits to 2 organizations: Memorial Hermann Hospital Based Physician Group (Houston, TX) and Emergency Medicine Services Of Tx, PLLC (San Antonio, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Denise Ryan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Denise Ryan accept?
Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Denise Ryan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Denise Ryan was last updated on April 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.
# Denise M Ryan, MD · NPI 1528038163
Emergency Medicine physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since January 25, 2006.
## Identity
- **NPI:** 1528038163 (Entity type: Individual)
- **Enumerated:** January 25, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** L7148 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 12141 RICHMOND AVE, Houston, TX 77082-2408
- **Phone:** (281) 558-3444
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Memorial Hermann Hospital Based Physician Group (NPI 1295363497, Houston, TX); Emergency Medicine Services Of Tx, PLLC (NPI 1245938729, San Antonio, TX) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 23, 2010
- **Other identifiers:** Other 8G4114 (TX); Other 1528038163 (TX); Medicare PIN 8B6243 (TX); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1528038163) · Data from the CMS NPPES public registry.