DERRICK BARRERA FIAN PMHNP-BC
NPI 1417734658
Nurse Practitioner - Psychiatric/Mental Health in Ventura, CA

Active since September 12, 2023PECOS EnrolledAccepts Medicare Assignment
1001 PARTRIDGE DR STE 110, VENTURA, CA 93003(925) 282-1778 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Derrick Barrera Fian Pmhnp-bc NPPES

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

DERRICK BARRERA FIAN PMHNP-BC (NPI 1417734658) is an individual psychiatric/mental health provider in Ventura, California, licensed in California (95026269) and active in the NPI registry since September 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1417734658
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameDERRICK BARRERA FIANCredential: PMHNP-BC
Location Address1001 PARTRIDGE DR STE 110Ventura, CA 93003-0714
Mailing Address1001 Partridge Dr Ste 110Ventura, CA 93003-0714 · (925) 282-1778
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateSeptember 12, 2023
Last NPPES UpdateNovember 10, 2025
NPPES CertifiedNovember 10, 2025
✔ NPI 1417734658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · 95026269
Also ListedRegistered NurseTaxonomy 163W00000X · License 95123337 (CA)
1001 PARTRIDGE DR STE 110, Ventura, CA 93003

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Derrick Barrera Fian Pmhnp-bc 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 ID8820449432
PECOS Enrollment IDI20240108006246
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.

Medicare Billing Reassignments

7

Medicare enrollment records show Derrick Fian reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Internal Medicine
8445 CAMINO SANTA FE STE 215
San Diego, CA 92121
  • Reassigned Medicare billing, California enrollment
  • 60 clinicians in this Medicare group
Clinic/Center
8445 CAMINO SANTA FE STE 215
San Diego, CA 92121
  • Reassigned Medicare billing, California enrollment
  • 72 clinicians in this Medicare group
Family Medicine
15644 POMERADO RD STE 202
Poway, CA 92064
  • Reassigned Medicare billing, California enrollment
  • 71 clinicians in this Medicare group
Geriatric Medicine
2810 CAMINO DEL RIO S, STE 102
San Diego, CA 92108
  • Reassigned Medicare billing, California enrollment
  • 98 clinicians in this Medicare group
Geriatric Medicine
436 S MAGNOLIA AVE
El Cajon, CA 92020
  • Reassigned Medicare billing, California enrollment
  • 71 clinicians in this Medicare group
Geriatric Medicine
1999 S BASCOM AVENUE, STE 700
Campbell, CA 95008
  • Reassigned Medicare billing, California enrollment
  • 42 clinicians in this Medicare group
Clinical
7373 N SCOTTSDALE RD STE A199
Scottsdale, AZ 85253
  • Reassigned Medicare billing, California enrollment
  • 766 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

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.

Measurement of brain wave activity (eeg), awake and drowsy 95816
Measurement of brain wave activity, also known as an EEG, is a non-invasive test that records electrical patterns in your brain. This procedure is done when you're awake and drowsy to understand how your brain functions during different states of consciousness.
1,262 services43 patients
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
1,116 services35 patients
Biofeedback training 90901
Biofeedback training is a technique that helps you learn to control certain body functions, like heart rate or blood pressure. Through this, you can improve your health by gaining more control over these functions. It's often used to manage stress, anxiety, or chronic pain.
888 services35 patients
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348
An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.
679 services33 patients
Therapy procedure for a range of mental processes, initial 15 minutes 97129
This therapy session, lasting 15 minutes, focuses on improving your mental processes. It's an initial step towards understanding your mental health needs. The therapist will engage in conversation, listen to your concerns, and help identify areas for improvement.
645 services33 patients
Therapy procedure using sensory experiences 97533
This therapy procedure utilizes sensory experiences to help improve your cognitive functions and emotional regulation. It involves activities like listening to music, touching objects, or doing exercises, to stimulate your senses and support your healing process.
423 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 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
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
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 20

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

Marriage & Family Therapist
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Marriage & Family Therapist
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Psychologist (Clinical)
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Social Worker (Clinical)
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Marriage & Family Therapist
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Marriage & Family Therapist
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Marriage & Family Therapist
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003
Counselor (Professional)
1001 PARTRIDGE DR STE 110
VENTURA, CA 93003

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 Derrick Fian's NPI number?

The NPI number for Derrick Fian is 1417734658. It was assigned to this individual provider in the NPPES registry on September 12, 2023.

Where is Derrick Fian located?

Derrick Fian practices at 1001 Partridge Dr Ste 110, Ventura, CA 93003. The listed phone number is (925) 282-1778.

What is Derrick Fian's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Derrick Fian enrolled in Medicare?

Yes. Derrick Fian 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.

Which organizations bill Medicare for Derrick Fian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derrick Fian reassigns Medicare benefits to 7 organizations: Myndfull Care California PC (San Diego, CA), Myndfull Care Management California PC (San Diego, CA), Geri Connection (Poway, CA), Senior Medical Associates, Inc. (San Diego, CA), Del Sur Healthcare (El Cajon, CA) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Derrick Fian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Derrick Fian was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.