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CHARLES AUSTIN FLOWERS
NPI 1346701901
Emergency Medicine in San Antonio, TX

Active since March 27, 2019PECOS Enrolled
1139 E SONTERRA BLVD, SAN ANTONIO, TX 78258(903) 452-5820 Get Directions Write a Review

NPPES record last updated: June 17, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Charles Austin Flowers NPPES

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

CHARLES AUSTIN FLOWERS (NPI 1346701901) is an individual emergency medicine provider in San Antonio, Texas, licensed in Texas (T5889) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Memphis.

NPPES Registry Identity

NPI1346701901
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameCHARLES AUSTIN FLOWERS
Location Address1139 E SONTERRA BLVDSan Antonio, TX 78258-4347
Mailing Address2222 Fawn Mist LnSan Antonio, TX 78248-1907 · (903) 452-5820
Phone(903) 452-5820
Sole ProprietorNo
Enumeration DateMarch 27, 2019
Last NPPES UpdateJune 17, 2022
NPPES CertifiedJune 17, 2022
✔ NPI 1346701901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in TX · T5889
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1139 E SONTERRA BLVD, San Antonio, TX 78258
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Secondary Practice Location 1

Location 1920 Madison Ave Ste 447Memphis, TN 38103-3438 · Phone (615) 396-6449

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Charles Austin Flowers 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 Charles Flowers reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Emergency Medicine Services Of Tx, PLLC
9.4 mi
Emergency Medicine
7700 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 1,452 clinicians in this Medicare group
NPI 1245938729 (210) 575-4000

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 3

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.
456 services451 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.
92 services92 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.
79 services78 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78258 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.

METHODIST HEALTHCARE SYSTEM OF SAN ANTONIO, LTD., L.L.P.
Rehabilitation Unit
1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258
Bexar County (210) 638-2100
KHUSRAV MIROV AGACNP
Nurse Practitioner (Acute Care)
1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258
Bexar County (210) 576-5401
TIMOTHY RYAN LENO
Physical Therapist
1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258
Bexar County (210) 638-2000
DR. STEVEN KNOTT PHARM.D.
Pharmacist (Geriatric)
1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258
Bexar County (210) 638-2100
DR. HARRISON WONHEE YOO M.D.
Internal Medicine
1139 E SONTERRA BLVD, SUITE #405
SAN ANTONIO, TX 78258
Bexar County (210) 404-0000
MATTHEW MICHAEL DWYER M.D.
Orthopaedic Surgery
1139 E SONTERRA BLVD, SUITE 500
SAN ANTONIO, TX 78258
Bexar County (210) 545-7171
ORTHOPEDIC PERFORMANCE INSTITUTE
Orthopaedic Surgery
1139 E SONTERRA BLVD, STE 500
SAN ANTONIO, TX 78258
Bexar County (210) 710-9509
NATHAN GAY AGACNP
Nurse Practitioner (Acute Care)
1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258
Bexar County (210) 638-2000

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 Charles Flowers's NPI number?

The NPI number for Charles Flowers is 1346701901. It was assigned to this individual provider in the NPPES registry on March 27, 2019.

Where is Charles Flowers located?

Charles Flowers practices at 1139 E Sonterra Blvd, San Antonio, TX 78258. The listed phone number is (903) 452-5820.

What is Charles Flowers's specialty?

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

Is Charles Flowers enrolled in Medicare?

Yes. Charles Flowers is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Charles Flowers's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Flowers reassigns Medicare benefits to Emergency Medicine Services Of Tx, PLLC (San Antonio, 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 Charles Flowers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Charles Flowers accept?

Health plans from Blue Cross and Blue Shield of Texas, Oscar Insurance Company and UnitedHealthcare list Charles Flowers 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 Charles Flowers was last updated on June 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.