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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.

JAMES DALE WILLIAMSON JR. PA-C
NPI 1306072046
Physician Assistant - Medical in Modesto, CA

Active since June 09, 2009PECOS Enrolled
2209 COFFEE RD STE I, MODESTO, CA 95355(209) 526-6400(209) 637-2834 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About James Dale Williamson Jr. Pa-c NPPES

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

JAMES DALE WILLIAMSON JR. PA-C (NPI 1306072046) is an individual medical provider in Modesto, California and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306072046
Entity TypeIndividualMale
Primary Taxonomy363AM0700X
Provider Legal NameJAMES DALE WILLIAMSON JR.Credential: PA-C
Location Address2209 COFFEE RD STE IModesto, CA 95355-2360
Mailing Address2209 Coffee Rd Ste IModesto, CA 95355-2360 · (209) 526-6400 · Fax (209) 637-2834
Phone(209) 526-6400
Fax(209) 637-2834
Sole ProprietorNo
Enumeration DateJune 9, 2009
Last NPPES UpdateAugust 5, 2026
NPPES CertifiedAugust 5, 2026
✔ NPI 1306072046 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AM0700X
2209 COFFEE RD STE I, Modesto, CA 95355
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Dale Williamson Jr. 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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
88 services84 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
37 services37 patients

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers13 claims34 services$5.43 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers13 claims13 services$16.15 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers13 claims13 services$87.88 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

ACCESS WELLNESS SERVICES
Family Medicine
2209 COFFEE RD STE I
MODESTO, CA 95355
Stanislaus County (209) 526-6400

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 James Williamson's NPI number?

The NPI number for James Williamson is 1306072046. It was assigned to this individual provider in the NPPES registry on June 9, 2009.

Where is James Williamson located?

James Williamson practices at 2209 Coffee Rd Ste I, Modesto, CA 95355. The listed phone number is (209) 526-6400.

What is James Williamson's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Is James Williamson enrolled in Medicare?

Yes. James Williamson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for James Williamson was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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.