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

CAROLYN DUONG
NPI 1346022167
Physician Assistant in Modesto, CA

Active since October 17, 2023PECOS Enrolled
1401 SPANOS CT STE 121, MODESTO, CA 95355(209) 550-4779 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 9, 2026, Oct 17, 2023 (2 updates tracked since 2023).

About Carolyn Duong NPPES

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

CAROLYN DUONG (NPI 1346022167) is an individual physician assistant in Modesto, California, licensed in California (PA68614) and active in the NPI registry since October 2023. She is enrolled in Medicare PECOS and maintains a secondary practice location in Vallejo.

NPPES Registry Identity

NPI1346022167
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameCAROLYN DUONG
Location Address1401 SPANOS CT STE 121Modesto, CA 95355-2812
Mailing AddressPo Box 255228Sacramento, CA 95865-5228
Phone(209) 550-4779
Sole ProprietorYes
Enumeration DateOctober 17, 2023
Last NPPES UpdateSeptember 9, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2026
✔ NPI 1346022167 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 · PA68614
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.
1401 SPANOS CT STE 121, Modesto, CA 95355
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Secondary Practice Location 1

Location 11310 Club DrVallejo, CA 94592-1187 · Phone (707) 638-5809

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Carolyn Duong 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95355 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
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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.

Other Providers at the Same Location NPPES

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

KYLEE ANN YOUNG PA-C
Physician Assistant
1401 SPANOS CT STE 121
MODESTO, CA 95355
Stanislaus County (209) 550-4779

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 Carolyn Duong's NPI number?

The NPI number for Carolyn Duong is 1346022167. It was assigned to this individual provider in the NPPES registry on October 17, 2023.

Where is Carolyn Duong located?

Carolyn Duong practices at 1401 Spanos Ct Ste 121, Modesto, CA 95355. The listed phone number is (209) 550-4779.

What is Carolyn Duong's specialty?

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

Is Carolyn Duong enrolled in Medicare?

Yes. Carolyn Duong is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Carolyn Duong was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.