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

MS. DARCIE ANN ARENAS PA
NPI 1083969943
Physician Assistant in Petaluma, CA

Q: What is Darcie Arenas's NPI number?

The NPI number for Darcie Arenas is 1083969943. It was assigned to this individual provider in the NPPES registry on July 17, 2012. The provider is also known as Darcie Larimore-Arenas.

Q: What is Darcie Arenas'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 Darcie Arenas was last updated on November 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since July 17, 2012PECOS Enrolled

335 S MCDOWELL BLVD, PETALUMA, CA 94954(707) 293-1110(415) 464-5445 Get Directions Write a Review

NPPES record last updated: November 3, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 3, 2026, Mar 6, 2024, Aug 3, 2021 (3 updates tracked since 2021).

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About Ms. Darcie Ann Arenas Pa NPPES

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

MS. DARCIE ANN ARENAS PA (NPI 1083969943) is an individual physician assistant in Petaluma, California, licensed in California (PA22446) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083969943

Entity TypeIndividualFemale

Primary Taxonomy363A00000X

Provider Legal NameMS. DARCIE ANN ARENASCredential: PA

Location Address335 S MCDOWELL BLVDPetaluma, CA 94954-3507

Mailing Address300 Professional Center Dr Ste 326Novato, CA 94947-4334 · (415) 897-5400 · Fax (415) 892-9506

Phone(707) 293-1110

Fax(415) 464-5445

Sole ProprietorNo

Enumeration DateJuly 17, 2012

Last NPPES UpdateNovember 3, 20263 updates tracked since enumeration

NPPES CertifiedNovember 3, 2026

✔ NPI 1083969943 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 · PA22446

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.

335 S MCDOWELL BLVD, Petaluma, CA 94954

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Other Names 1

Former Name (1)Darcie Larimore-arenas

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Darcie Ann Arenas Pa 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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

112 services12 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.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94954 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

$96.16 typical visit price

range $63.04 – $187.01

Typical copayment $24.04 (range $15.76 – $46.75)

Most-billed visit code 99203

Established Patient

$77.94 typical visit price

range $21.02 – $153.40

Typical copayment $19.48 (range $5.25 – $38.35)

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 13

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

LEAH HEINRICH NP

Nurse Practitioner (Adult Health)