1. Home
  2. Directory
  3. California
  4. Simi Valley
  5. Preventive Medicine
  6. NPI Profile

DR. JAMES A. PIERRE JR. MD, MPH
NPI 1003194309
Preventive Medicine - Addiction Medicine in Simi Valley, CA

Active since August 03, 2011PECOS EnrolledAccepts Medicare Assignment
3855 ALAMO ST STE A, SIMI VALLEY, CA 93063(504) 813-3864 Get Directions Write a Review

NPPES record last updated: January 19, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jan 19, 2023, Sep 29, 2022, Sep 7, 2021 and 1 more (4 updates tracked since 2020).

About Dr. James A. Pierre Jr. Md, Mph NPPES

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

DR. JAMES A. PIERRE JR. MD, MPH (NPI 1003194309) is an individual addiction medicine provider in Simi Valley, California, licensed in California (C180637) and active in the NPI registry since August 2011. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1003194309
Entity TypeIndividualMale
Primary Taxonomy2083A0300X
Provider Legal NameDR. JAMES A. PIERRE JR.Credential: MD, MPH
Location Address3855 ALAMO ST STE ASimi Valley, CA 93063-2104
Mailing Address8500 W Sunset Blvd Apt E509West Hollywood, CA 90069-2378 · (504) 813-3864
Phone(504) 813-3864
Sole ProprietorYes
Medical School CMSOtherGraduated 2007
Enumeration DateAugust 3, 2011
Last NPPES UpdateJanuary 19, 20234 updates tracked since enumeration
NPPES CertifiedJanuary 19, 2023
✔ NPI 1003194309 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPreventive Medicine · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2083A0300X
License✔ Licensed in CA · C180637
Definition

A physician engaged in the subspecialty practice of Addiction Medicine who specializes in the prevention, evaluation, diagnosis, treatment, and recovery of persons with the disease of addiction.

Also ListedPreventive Medicine · Public Health & General Preventive MedicineTaxonomy 2083P0901X · License 287401 (MA)
Also ListedGeneral PracticeTaxonomy 208D00000X · License 4301501025 (MI)
3855 ALAMO ST STE A, Simi Valley, CA 93063
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1636 Waymarket DrAnn Arbor, MI 48103-6441 · Phone (504) 813-3864
Location 2100 Sudbury St Unit 2710Boston, MA 02114-2941 · Phone (504) 813-3864

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. James A. Pierre Jr. Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8729499223
PECOS Enrollment IDI20221018002821
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 93063 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
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
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 5

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

MRS. ROSA SINGER MSW, LCSW
Social Worker (Clinical)
3855 ALAMO ST STE A
SIMI VALLEY, CA 93063
Ventura County (805) 587-8471
RACHELE MARIE CATLETT GOMEZ LCSW
Social Worker (Clinical)
3855 ALAMO ST STE A
SIMI VALLEY, CA 93063
Ventura County (213) 620-5712
LETICIA JULIETTE DELLING LMFT
Marriage & Family Therapist
3855 ALAMO ST STE A
SIMI VALLEY, CA 93063
Ventura County (855) 701-7955
TRISTAN DANIELLE SANCHEZ MS
Marriage & Family Therapist
3855 ALAMO ST STE A
SIMI VALLEY, CA 93063
Ventura County (855) 701-7955
MRS. JENNIFER SANTILLO LMFT
Counselor
3855 ALAMO ST STE A
SIMI VALLEY, CA 93063
Ventura County (805) 577-2655

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 Pierre's NPI number?

The NPI number for James Pierre is 1003194309. It was assigned to this individual provider in the NPPES registry on August 3, 2011.

Where is James Pierre located?

James Pierre practices at 3855 Alamo St Ste A, Simi Valley, CA 93063. The listed phone number is (504) 813-3864.

What is James Pierre's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Addiction Medicine, with taxonomy code 2083A0300X.

Is James Pierre enrolled in Medicare?

Yes. James Pierre is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for James Pierre was last updated on January 19, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.