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BYRON CADWALLADER FREEMYER M.D.
NPI 1841280740
Emergency Medicine in San Antonio, TX

Active since October 24, 2005PECOS Enrolled
111 DALLAS ST, EMERGENCY ROOM, SAN ANTONIO, TX 78205(210) 614-0180(210) 615-7170 Get Directions Write a Review

NPPES record last updated: December 7, 2009. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Byron Cadwallader Freemyer M.d. NPPES

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

BYRON CADWALLADER FREEMYER M.D. (NPI 1841280740) is an individual emergency medicine provider in San Antonio, Texas, licensed in Texas (H1961) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841280740
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameBYRON CADWALLADER FREEMYERCredential: M.D.
Location Address111 DALLAS ST, EMERGENCY ROOMSan Antonio, TX 78205-1201
Mailing AddressPo Box 12740Westminster, CA 92685-2740 · (562) 809-3527
Phone(210) 614-0180
Fax(210) 615-7170
Sole ProprietorYes
Enumeration DateOctober 24, 2005
Last NPPES UpdateDecember 7, 2009
✔ NPI 1841280740 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in TX · H1961
Definition
An 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. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
111 DALLAS ST, San Antonio, TX 78205
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Other Identifiers 6

Medicare PIN8L16985TX
Medicare PIN00D34ZTX
Other8N2593TX · Bcbs
Medicaid097844704TX
Medicare PIN010029300TX
Medicaid097844701TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Byron Cadwallader Freemyer M.d. 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 Reassignments

2

Medicare enrollment records show Byron Freemyer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Third Coast Emergency Physicians Southwest PA
7.7 mi
Emergency Medicine
4103 NORTH LOOK 1604 W
San Antonio, TX 78249
  • Reassigned Medicare billing, Texas enrollment
  • 379 clinicians in this Medicare group
NPI 1497793475 (330) 493-4443
Travis County Emergency Physicians PA
75 mi
Emergency Medicine
1201 W 38TH ST
Austin, TX 78705
  • Reassigned Medicare billing, Texas enrollment
  • 1,511 clinicians in this Medicare group
NPI 1962440933 (330) 493-4443

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
87 services87 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
76 services73 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
23 services22 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

CHRISTIAN JOSEPH REITANO M.D.
Radiology (Diagnostic Radiology)
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-7780
DR. LENOY GALVEZ MD
Psychiatry & Neurology (Psychiatry)
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-7000
DR. KIMBERLY A. MALLERY M.D.
Internal Medicine
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-6500
MANJUSHA GUNUGANTI
Physical Medicine & Rehabilitation
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 618-6623
MS. BRIANA ROCHELLE GARZA OTR
Occupational Therapist
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-8195
MRS. MARY ANN APOPOT ANP
Nurse Practitioner (Family)
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-7011
BRANDON BAROFF DO
Emergency Medicine
111 DALLAS ST
SAN ANTONIO, TX 78205
Bexar County (210) 297-7000
SELECT SPECIALTY HOSPITAL - SAN ANTONIO INC
Long Term Care Hospital
111 DALLAS ST, 4TH FL
SAN ANTONIO, TX 78205
Bexar County (210) 297-7188

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 Byron Freemyer's NPI number?

The NPI number for Byron Freemyer is 1841280740. It was assigned to this individual provider in the NPPES registry on October 24, 2005.

Where is Byron Freemyer located?

Byron Freemyer practices at 111 Dallas St Emergency Room, San Antonio, TX 78205. The listed phone number is (210) 614-0180.

What is Byron Freemyer's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Byron Freemyer enrolled in Medicare?

Yes. Byron Freemyer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Byron Freemyer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Byron Freemyer reassigns Medicare benefits to 2 organizations: Third Coast Emergency Physicians Southwest PA (San Antonio, TX) and Travis County Emergency Physicians PA (Austin, 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 Byron Freemyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Byron Freemyer accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Molina Healthcare and Sendero Health Plans, Local Nonprofit list Byron Freemyer 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 Byron Freemyer was last updated on December 7, 2009. 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.