1. Home
  2. Directory
  3. Texas
  4. San Antonio
  5. Pediatrics
  6. NPI Profile

KAREN GUILLORY MD
NPI 1083689780
Pediatrics - Pediatric Critical Care Medicine in San Antonio, TX

Active since February 17, 2006PECOS Enrolled
7700 FLOYD CURL DR, SAN ANTONIO, TX 78229(210) 575-6919(210) 575-4013 Get Directions Write a Review

NPPES record last updated: May 20, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Karen Guillory Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KAREN GUILLORY MD (NPI 1083689780) is an individual pediatric critical care medicine provider in San Antonio, Texas, licensed in Texas (K1828) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083689780
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameKAREN GUILLORYCredential: MD
Location Address7700 FLOYD CURL DRSan Antonio, TX 78229-3902
Mailing Address8109 Fredericksburg Rd, Physician Practice ServicesSan Antonio, TX 78229-3311 · (210) 575-6919 · Fax (210) 575-4013
Phone(210) 575-6919
Fax(210) 575-4013
Sole ProprietorNo
Enumeration DateFebruary 17, 2006
Last NPPES UpdateMay 20, 2014
✔ NPI 1083689780 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in TX · K1828
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
Also ListedPediatricsTaxonomy 208000000X · License K1828 (TX)
7700 FLOYD CURL DR, San Antonio, TX 78229
Open in Google Maps ↗

Other Identifiers 4

Other105683008TX · Csn
Medicaid105683007TX
Medicare PIN320681YLLW
Other8EA040TX · Bcbs

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karen Guillory Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Karen Guillory reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Magella Medical Associates Billing, Inc.
86 mi
Neonatal-Perinatal Medicine
2400 ROUND ROCK AVE
Round Rock, TX 78681
  • Reassigned Medicare billing, Texas enrollment
  • 432 clinicians in this Medicare group
NPI 1083631071 (512) 341-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

TIMOTHY I OSONMA MD
Internal Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4000
THOMAS REX BOSEN MD
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 233-6363
R L CARRY INC
Internal Medicine (Geriatric Medicine)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 558-6288
DR. SUMERU GHANSHYAM MEHTA M.D.
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4420
DR. MUHAMMAD ALI SYED MD
Pediatrics (Pediatric Critical Care Medicine)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (347) 993-0992
CHRISTINE KIM
Pathology (Anatomic Pathology & Clinical Pathology)
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-4000
CHRISTINA MARIE GUTIERREZ M.D.
Emergency Medicine
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 233-6363
TAHNIA MARZAN ALAUDDIN PHARMD
Pharmacist
7700 FLOYD CURL DR
SAN ANTONIO, TX 78229
Bexar County (210) 575-7220

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 Karen Guillory's NPI number?

The NPI number for Karen Guillory is 1083689780. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Karen Guillory located?

Karen Guillory practices at 7700 Floyd Curl Dr, San Antonio, TX 78229. The listed phone number is (210) 575-6919.

What is Karen Guillory's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Karen Guillory enrolled in Medicare?

Yes. Karen Guillory is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karen Guillory's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Guillory reassigns Medicare benefits to Magella Medical Associates Billing, Inc. (Round Rock, TX). The 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 Karen Guillory's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Guillory accept?

Health plans from Blue Cross and Blue Shield of Texas, Oscar Health and Oscar Insurance Company list Karen Guillory 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 Karen Guillory was last updated on May 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.