KATY ALEXY PA-C
NPI 1629544556
Physician Assistant in Antioch, CA

Q: What is Katy Alexy's NPI number?

The NPI number for Katy Alexy is 1629544556. It was assigned to this individual provider in the NPPES registry on October 18, 2018.

Q: What is Katy Alexy's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Q: When was this NPI record last updated?

The NPPES record for Katy Alexy was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.

Active since October 18, 2018PECOS Enrolled

94.62/100

CMS Quality Rating

3901 LONE TREE WAY, ANTIOCH, CA 94509(925) 779-7200 Get Directions Write a Review

NPPES record last updated: May 21, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 21, 2026, Nov 14, 2018, Oct 18, 2018 (3 updates tracked since 2018).

On this page

About Katy Alexy Pa-c NPPES

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

KATY ALEXY PA-C (NPI 1629544556) is an individual physician assistant in Antioch, California, licensed in California (56211) and active in the NPI registry since October 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629544556

Entity TypeIndividualFemale

Primary Taxonomy363A00000X

Provider Legal NameKATY ALEXYCredential: PA-C

Location Address3901 LONE TREE WAYAntioch, CA 94509-6200

Mailing Address4356 Oakdale PlPittsburg, CA 94565-6256

Phone(925) 779-7200

Sole ProprietorYes

Enumeration DateOctober 18, 2018

Last NPPES UpdateMay 21, 20263 updates tracked since enumeration

NPPES CertifiedMay 21, 2026

✔ NPI 1629544556 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in CA · 56211

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

3901 LONE TREE WAY, Antioch, CA 94509

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katy Alexy Pa-c 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.

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

27 services27 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

23 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94509 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

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

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.

94.62/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

76.67

Improvement Activities

Cost

97.14

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. DUNG THINGOC NGUYEN PHARM. D.

Pharmacist