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ALISON UNZEITIG BARRON MD
NPI 1790041085
Surgery - Surgical Oncology in San Antonio, TX

Active since April 11, 2012PECOS EnrolledAccepts Medicare Assignment
89.44/100
CMS Quality Rating
18707 HARDY OAK BLVD STE 320, SAN ANTONIO, TX 78258(210) 277-6255(210) 277-6256 Get Directions Write a Review

NPPES record last updated: September 18, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 11, 2022, Jul 2, 2019, Jan 2, 2019 and 3 more (6 updates tracked since 2017).

About Alison Unzeitig Barron Md NPPES

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

ALISON UNZEITIG BARRON MD (NPI 1790041085) is an individual surgical oncology provider in San Antonio, Texas, licensed in Texas (R6971) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Methodist Hospital Atascosa, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1790041085
Entity TypeIndividualFemale
Primary Taxonomy2086X0206X
Provider Legal NameALISON UNZEITIG BARRONCredential: MD
Location Address18707 HARDY OAK BLVD STE 320San Antonio, TX 78258-4890
Mailing AddressPo Box 911230Dallas, TX 75391-1230 · (972) 997-8000 · Fax (972) 234-0813
Phone(210) 277-6255
Fax(210) 277-6256
Sole ProprietorNo
Medical School CMSUniversity Of Texas Southwestern Medical School At DallasGraduated 2012
Enumeration DateApril 11, 2012
Last NPPES UpdateSeptember 18, 20236 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2023
✔ NPI 1790041085 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Surgical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2086X0206X
License✔ Licensed in TX · R6971
Definition
A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.
Also ListedSurgeryTaxonomy 208600000X · License 61965 (MN), R6971 (TX)
18707 HARDY OAK BLVD STE 320, San Antonio, TX 78258
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1200 1st St SWRochester, MN 55905-0001 · Phone (507) 284-2511
Location 24352 N Josey LnCarrollton, TX 75010-4602 · Phone (972) 394-4368 · Fax (972) 394-4368
Location 33410 Worth St Ste 160Dallas, TX 75246 · Phone (214) 826-9797 · Fax (214) 826-2573

Other Identifiers 2

Medicaid390718001TX
Medicaid390718002TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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 and accepts Medicare assignment

Alison Unzeitig Barron Md 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.

PECOS PAC ID9931486453
PECOS Enrollment IDI20181113002583
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 Alison Barron reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Texas Oncology PA
60 mi
Medical Oncology
4101 JAMES CASEY ST STE 100
Austin, TX 78745
  • Reassigned Medicare billing, Texas enrollment
  • 1,054 clinicians in this Medicare group
NPI 1972770303 (972) 997-8000

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 11

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.

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
44 services44 patients
X-ray of surgical specimen 76098
An X-ray of a surgical specimen involves taking detailed images of the tissue or organ removed during surgery. This helps in examining the specimen more closely to understand the disease better. It's a safe, non-invasive procedure, providing valuable insights to your healthcare team.
40 services36 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
32 services29 patients
Partial removal of breast 19301
A partial removal of the breast, also known as a lumpectomy, involves taking out a portion of the breast tissue to eliminate concerning cells. It's typically performed when the problem area is limited in size. This procedure helps to preserve most of the breast's appearance while aiming to remove all the unhealthy cells.
30 services27 patients
Imaging of lymph nodes during surgery 38900
Imaging of lymph nodes during surgery involves taking detailed pictures of your lymph nodes to help surgeons see and assess them in real-time. This procedure can aid in detecting disease, guiding treatment, and improving surgical precision.
28 services28 patients
Biopsy or removal of deep lymph nodes of underarm 38525
A biopsy or removal of deep underarm lymph nodes is a procedure where a small sample of lymph node tissue is taken for testing. This helps in diagnosing or ruling out conditions like infections or cancers. It involves a small incision and is typically done under local or general anesthesia.
27 services27 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Methodist Hospital Atascosa

Acute Care Hospitals · Jourdanton, TX
OwnershipProprietary
CMS Certification Number450165
Location1905 Hwy 97 EastJourdanton, TX 78026 · Atascosa County
Emergency services

Methodist Hospital

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450388
Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number670055
Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County
Emergency services Birthing friendly

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
$166.88 typical visit price
range $54.84 – $166.88
Typical copayment $41.72 (range $13.71 – $41.72)
Most-billed visit code 99205
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.44/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality75.85
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. GUSTAVO E. GUAJARDO SALINAS MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
18707 HARDY OAK BLVD STE 320
SAN ANTONIO, TX 78258
Bexar County (210) 614-0880
NAYEL KHAN M.D.
Otolaryngology (Plastic Surgery within the Head & Neck)
18707 HARDY OAK BLVD STE 320
SAN ANTONIO, TX 78258
Bexar County (210) 245-2000
DR. JOHN OGDEN MD
Internal Medicine (Hematology & Oncology)
18707 HARDY OAK BLVD STE 320
SAN ANTONIO, TX 78258
Bexar County (210) 545-6972

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 Alison Barron's NPI number?

The NPI number for Alison Barron is 1790041085. It was assigned to this individual provider in the NPPES registry on April 11, 2012.

Where is Alison Barron located?

Alison Barron practices at 18707 Hardy Oak Blvd Ste 320, San Antonio, TX 78258. The listed phone number is (210) 277-6255.

What is Alison Barron's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

Is Alison Barron enrolled in Medicare?

Yes. Alison Barron 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 organization bills Medicare for Alison Barron's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alison Barron reassigns Medicare benefits to Texas Oncology PA (Austin, 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 Alison Barron's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alison Barron accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 9 other insurers list Alison Barron 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 Alison Barron affiliated with any hospitals?

According to CMS data, Alison Barron is affiliated with Methodist Hospital Atascosa, Methodist Hospital and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for Alison Barron was last updated on September 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.