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OMAR AYALA M.D.
NPI 1972786176
Internal Medicine in San Angelo, TX

Active since December 11, 2007PECOS EnrolledAccepts Medicare Assignment
95.75/100
CMS Quality Rating
120 E HARRIS AVE, SAN ANGELO, TX 76903(325) 653-6741 Get Directions Write a Review

NPPES record last updated: June 11, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Omar Ayala M.d. NPPES

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

OMAR AYALA M.D. (NPI 1972786176) is an individual internal medicine provider in San Angelo, Texas, licensed in Texas (N4925) and active in the NPI registry since December 2007. He is enrolled in Medicare PECOS, is affiliated with Shannon Medical Center, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1972786176
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameOMAR AYALACredential: M.D.
Location Address120 E HARRIS AVESan Angelo, TX 76903-5904
Mailing AddressPo Box 22000San Angelo, TX 76902-7200 · (325) 658-1511
Phone(325) 653-6741
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateDecember 11, 2007
Last NPPES UpdateJune 11, 2013
✔ NPI 1972786176 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · N4925
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
120 E HARRIS AVE, San Angelo, TX 76903
Open in Google Maps ↗

Other Identifiers 1

OtherN4925TX · Texas Medical Board

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

Omar Ayala M.d. 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 ID941342760
PECOS Enrollment IDI20100116000219
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 Omar Ayala reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Shannon Clinic
0.4 mi
Family Medicine
120 E BEAUREGARD AVE
San Angelo, TX 76903
  • Reassigned Medicare billing, Texas enrollment
  • 671 clinicians in this Medicare group
NPI 1770587149 (325) 658-1511

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.

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.
163 services160 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.
51 services50 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.
17 services16 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Shannon Medical Center

Acute Care Hospitals · San Angelo, TX
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450571
Location120 E Harris Ave.San Angelo, TX 76903 · Tom Green County
Emergency services Birthing friendly

Scenic Mountain Medical Center, A Steward Family H

Acute Care Hospitals · Big Spring, TX
OwnershipProprietary
CMS Certification Number450653
Location1601 W 11th PlaceBig Spring, TX 79720 · Howard County
Emergency services Birthing friendly

Schleicher County Medical Center

Critical Access Hospitals · Eldorado, TX
OwnershipProprietary
CMS Certification Number451304
Location102 North Us Highway 277Eldorado, TX 76936 · Schleicher County
Emergency services

Ballinger Memorial Hospital

Critical Access Hospitals · Ballinger, TX
OwnershipGovernment - Hospital District or Authority
CMS Certification Number451310
Location608 Avenue BBallinger, TX 76821 · Runnels County
Emergency services

Heart Of Texas Memorial Hospital

Critical Access Hospitals · Brady, TX
OwnershipVoluntary non-profit - Private
CMS Certification Number451348
Location2008 Nine RoadBrady, TX 76825 · Mc Culloch County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 76903 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.

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.

95.75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability95
Improvement Activities40

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.

DR. STEPHANIE WALLS MCCANN PHARM. D.
Pharmacist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 657-5214
DR. YASEEN SALEH MD
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 747-6741
SHANNON MEDICAL CENTER
Psychiatric Hospital
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 657-5031
DR. LANCE ELIOT HAFTER D.O.
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 747-6741
JAVIER LEONCIO BAEZ PRESSER MD
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 481-6410
DR. EKEMINI BENEDICT USORO DO
Hospitalist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 747-6741
CHIAMAKA SYLVIA DIALA MD
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 747-6741
DR. SHELLY DENISE WEISE EDD
Physical Therapist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Tom Green County (325) 653-6741

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 Omar Ayala's NPI number?

The NPI number for Omar Ayala is 1972786176. It was assigned to this individual provider in the NPPES registry on December 11, 2007.

Where is Omar Ayala located?

Omar Ayala practices at 120 E Harris Ave, San Angelo, TX 76903. The listed phone number is (325) 653-6741.

What is Omar Ayala's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Omar Ayala enrolled in Medicare?

Yes. Omar Ayala 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 Omar Ayala's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Omar Ayala reassigns Medicare benefits to Shannon Clinic (San Angelo, 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 Omar Ayala's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Omar Ayala accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Omar Ayala 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 Omar Ayala affiliated with any hospitals?

According to CMS data, Omar Ayala is affiliated with Shannon Medical Center, Scenic Mountain Medical Center, A Steward Family H, Schleicher County Medical Center, Ballinger Memorial Hospital and Heart Of Texas Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Omar Ayala was last updated on June 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.