2026 NPPES data Allergy & Immunology Physician NPI 1154184943 PA-C
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KAITLYN DIAZ, PA-C

Allergy & Immunology Physician in SAN ANTONIO, Texas. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Industry payments
$3.5K
125 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KAITLYN DIAZ, PA-C is a Allergy & Immunology Physician ([object Object]) practicing in SAN ANTONIO, Texas . Industry payments of $3.5K across 125 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KAITLYN DIAZ, PA-C specializes in Allergy & Immunology Physician and practices in SAN ANTONIO, Texas, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KAITLYN DIAZ, PA-C practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KAITLYN DIAZ, PA-C at a glance

Quality data not reported

NPI registry status

Active

Issued 02/05/2024

NPI 1154184943

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Specialty distribution in Texas

How Allergy & Immunology Physician compares to other specialties among Texas providers

Texas providers

Allergy & Immunology Physician share within Texas

1. Allergy & Immunology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy & Immunology Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Allergy & Immunology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Allergy & Immunology Physician ABMS/AOA estimate

Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

KAITLYN DIAZ, PA-C is a Allergy & Immunology Physician provider practicing in SAN ANTONIO, Texas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1154184943. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KAITLYN DIAZ, PA-C appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding PA-C credentials at 2424 BABCOCK RD STE 301, SAN ANTONIO, TX, 78229, with a listed phone of (210) 538-7678. NPI 1154184943 was issued on 02/05/2024. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Allergy & Immunology Physician providers operate outside Part D entirely.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2424 BABCOCK RD STE 301
SAN ANTONIO, TX 78229

Provider Details

NPI 1154184943
Specialty Allergy & Immunology Physician
Credentials PA-C
Gender Female
NPI Issued 02/05/2024

Hospital and facility affiliations

Facilities where KAITLYN DIAZ, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ALLERGY ASTHMA AND IMMUNOLOGY ASSOCIATES OF SOUTH TEXAS, P.A.
SAN ANTONIO, TX

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for KAITLYN DIAZ, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$3.5K

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Texas TMB 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 — they are NOT specific to KAITLYN DIAZ, PA-C. To verify KAITLYN DIAZ, PA-C's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Allergy & Immunology Physician Overview

How KAITLYN DIAZ, PA-C fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

Nearby Allergy & Immunology Physician Providers in Texas

Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as DIAZ.

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAITLYN DIAZ, PA-C's specialty?
KAITLYN DIAZ, PA-C specializes in Allergy & Immunology Physician and practices in SAN ANTONIO, Texas. Credentials: PA-C.
Where is KAITLYN DIAZ, PA-C located?
KAITLYN DIAZ, PA-C is located at 2424 BABCOCK RD STE 301, SAN ANTONIO, TX, 78229. Phone: (210) 538-7678.
What is KAITLYN DIAZ, PA-C's NPI number?
KAITLYN DIAZ, PA-C's National Provider Identifier (NPI) is 1154184943, issued on 02/05/2024.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
Does KAITLYN DIAZ, PA-C accept Medicare?
KAITLYN DIAZ, PA-C appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAITLYN DIAZ, PA-C's credentials?
KAITLYN DIAZ, PA-C's NPI is 1154184943 with credentials PA-C. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology