Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ABIEL VILLANUEVA MENDEZ
NPI 1033797196
Hospitalist in San Antonio, TX

Active since March 31, 2021PECOS EnrolledAccepts Medicare Assignment
4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000(210) 358-8002 Get Directions Write a Review

NPPES record last updated: September 30, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 30, 2026, Oct 9, 2024, Aug 6, 2024 and 2 more (5 updates tracked since 2021).

About Abiel Villanueva Mendez NPPES

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

ABIEL VILLANUEVA MENDEZ (NPI 1033797196) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (V2846) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, is affiliated with University Health System, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1033797196
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameABIEL VILLANUEVA MENDEZ
Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402
Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (210) 358-4000 · Fax (210) 358-8002
Fax(210) 358-8002
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 31, 2021
Last NPPES UpdateSeptember 30, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2026
✔ NPI 1033797196 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in TX · V2846
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License V2846 (TX)
4502 MEDICAL DR, San Antonio, TX 78229

Secondary Practice Locations 2

Location 17400 Barlite BlvdSan Antonio, TX 78224-1308 · Phone (210) 921-2000
Location 2925 Quartz TerWest Palm Beach, FL 33413-1244 · Phone (561) 708-3292

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

Abiel Villanueva Mendez 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 ID1557801271
PECOS Enrollment IDI20240909004325
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 Abiel Villanueva Mendez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 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 2

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
63 services57 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
19 services19 patients

Hospital Affiliations CMS Care Compare

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

University Health System

Acute Care Hospitals · San Antonio, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450213
Location4502 Medical DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Physician 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.

New Patient
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
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.

Internal Medicine (Cardiovascular Disease)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physical Therapy Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pharmacist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Hospitalist
4502 MEDICAL DR
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 Abiel Villanueva Mendez's NPI number?

The NPI number for Abiel Villanueva Mendez is 1033797196. It was assigned to this individual provider in the NPPES registry on March 31, 2021.

Where is Abiel Villanueva Mendez located?

Abiel Villanueva Mendez practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.

What is Abiel Villanueva Mendez's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Abiel Villanueva Mendez enrolled in Medicare?

Yes. Abiel Villanueva Mendez 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 Abiel Villanueva Mendez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Abiel Villanueva Mendez reassigns Medicare benefits to Community Medicine Associates (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 Abiel Villanueva Mendez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Abiel Villanueva Mendez accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc. and WellPoint list Abiel Villanueva Mendez 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 Abiel Villanueva Mendez affiliated with any hospitals?

According to CMS data, Abiel Villanueva Mendez is affiliated with University Health System.

When was this NPI record last updated?

The NPPES record for Abiel Villanueva Mendez was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.