DR. PATRICK CULLINAN DO
NPI 1043389653
Internal Medicine - Critical Care Medicine in San Antonio, TX
About Dr. Patrick Cullinan Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PATRICK CULLINAN DO (NPI 1043389653) is an individual critical care medicine provider in San Antonio, Texas, licensed in Texas (P2845) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with University Health System, and maintains a secondary practice location in San Antonio.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Patrick Cullinan Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Patrick Cullinan reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: University Of Texas Health Science Center At San Antonio
- 2,397 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 1,452 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 149 clinicians in this Medicare group
San Antonio, TX 78249
- Reassigned Medicare billing, Texas enrollment
- 379 clinicians in this Medicare group
San Marcos, TX 78666
- Reassigned Medicare billing, Texas enrollment
- 137 clinicians in this Medicare group
Austin, TX 78704
- Reassigned Medicare billing, Texas enrollment
- 90 clinicians in this Medicare group
Houston, TX 77090
- Reassigned Medicare billing, Texas enrollment
- 88 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 4
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Health System
Acute Care Hospitals · San Antonio, TXChristus Santa Rosa Medical Center
Acute Care Hospitals · San Antonio, TXSt David's South Austin Medical Center
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78229 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.
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
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 Patrick Cullinan's NPI number?
The NPI number for Patrick Cullinan is 1043389653. It was assigned to this individual provider in the NPPES registry on November 7, 2006.
Where is Patrick Cullinan located?
Patrick Cullinan practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-8555.
What is Patrick Cullinan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Patrick Cullinan enrolled in Medicare?
Yes. Patrick Cullinan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Patrick Cullinan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Cullinan reassigns Medicare benefits to 7 organizations: Uthscsa Dental School (San Antonio, TX), Emergency Medicine Services Of Tx, PLLC (San Antonio, TX), Bexar Emergency Physicians, PLLC (San Antonio, TX), Third Coast Emergency Physicians Southwest PA (San Antonio, TX), Comal Emergency Physicians, PLLC (San Marcos, TX) and 2 more organizations, listed in the Medicare section above. 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 Patrick Cullinan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Patrick Cullinan accept?
Health plans from Antidote Health of TX, Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Community First and Harbor Health and 4 other insurers list Patrick Cullinan 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.
Is Patrick Cullinan affiliated with any hospitals?
According to CMS data, Patrick Cullinan is affiliated with University Health System, Christus Santa Rosa Medical Center and St David's South Austin Medical Center.
When was this NPI record last updated?
The NPPES record for Patrick Cullinan was last updated on June 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Patrick Cullinan, DO · NPI 1043389653
Critical Care Medicine physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since November 7, 2006.
## Identity
- **NPI:** 1043389653 (Entity type: Individual)
- **Enumerated:** November 7, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** P2845 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4502 MEDICAL DR, San Antonio, TX 78229-4402
- **Phone:** (210) 358-8555 · **Fax:** (210) 358-7579
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Uthscsa Dental School (NPI 1750403887, San Antonio, TX); Emergency Medicine Services Of Tx, PLLC (NPI 1245938729, San Antonio, TX); Bexar Emergency Physicians, PLLC (NPI 1548034994, San Antonio, TX); Third Coast Emergency Physicians Southwest PA (NPI 1497793475, San Antonio, TX); Comal Emergency Physicians, PLLC (NPI 1588438675, San Marcos, TX); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 2000
## Record status
- **NPPES last updated:** June 22, 2020
- **Other identifiers:** Other P01280063 (TX); Medicaid 307403102 (TX); Other 307403122 (TX); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1043389653) · Data from the CMS NPPES public registry.