GRAHAM JAMES ELLIS DO
NPI 1215556667
Psychiatry & Neurology - Psychiatry in Ventura, CA

Q: What is Graham Ellis's NPI number?

The NPI number for Graham Ellis is 1215556667. It was assigned to this individual provider in the NPPES registry on April 15, 2020.

Q: What is Graham Ellis's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Graham Ellis was last updated on October 30, 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.

Active since April 15, 2020PECOS Enrolled

300 HILLMONT AVE, VENTURA, CA 93003(310) 924-1413 Get Directions Write a Review

NPPES record last updated: October 30, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Graham James Ellis Do NPPES

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

GRAHAM JAMES ELLIS DO (NPI 1215556667) is an individual psychiatry provider in Ventura, California, licensed in California (20A24149) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1215556667

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameGRAHAM JAMES ELLISCredential: DO

Location Address300 HILLMONT AVEVentura, CA 93003-1651

Mailing Address330 E Roosevelt St Apt 4091Phoenix, AZ 85004-4312 · (310) 924-1413

Phone(310) 924-1413

Sole ProprietorYes

Enumeration DateApril 15, 2020

Last NPPES UpdateOctober 30, 2025

NPPES CertifiedOctober 30, 2025

✔ NPI 1215556667 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · 20A24149

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

300 HILLMONT AVE, Ventura, CA 93003

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Secondary Practice Locations 2

Location 1200 Hillmont AveVentura, CA 93003-1647 · Phone (805) 652-6729

Location 27400 Barlite BlvdSan Antonio, TX 78224-1308 · Phone (210) 921-2000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Graham James Ellis Do 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.

Medicare Billing Reassignment

Medicare enrollment records show Graham Ellis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Ventura

Same address

Federally Qualified Health Center (FQHC)

300 HILLMONT AVE STE 302
Ventura, CA 93003

Reassigned Medicare billing, California enrollment
710 clinicians in this Medicare group

NPI 1619118569 (805) 652-6255

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

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

$185.36 typical visit price

range $62.32 – $185.36

Typical copayment $46.34 (range $15.58 – $46.34)

Most-billed visit code 99205

Established Patient

$77.11 typical visit price

range $20.68 – $151.85

Typical copayment $19.27 (range $5.17 – $37.96)

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 20

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

LEIDEE DE LEON

Registered Nurse (Pediatrics)

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-6000

DANIEL FREITAS

Case Manager/Care Coordinator

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-6161

LINDSAY ANN LOFT FNP

Nurse Practitioner (Family)

300 HILLMONT AVE, BLDG 340, STE 401
VENTURA, CA 93003

Ventura County (805) 641-0141

DENNIS J WATSON

Counselor (Mental Health)

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 562-5907

NATHAN BRODIE

Case Manager/Care Coordinator

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-6161

SEEMA SETH FNP-BC

Nurse Practitioner (Family)

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-3280

MARY E. RASMUSSEN REG.NURSE

Registered Nurse

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-3200

KAYLEE MICHELLE JONES HANTKE

Student in an Organized Health Care Education/Training Program

300 HILLMONT AVE
VENTURA, CA 93003

Ventura County (805) 652-6000

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 Graham Ellis's NPI number?

The NPI number for Graham Ellis is 1215556667. It was assigned to this individual provider in the NPPES registry on April 15, 2020.

Where is Graham Ellis located?

Graham Ellis practices at 300 Hillmont Ave, Ventura, CA 93003. The listed phone number is (310) 924-1413.

What is Graham Ellis's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Graham Ellis enrolled in Medicare?

Yes. Graham Ellis is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Graham Ellis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Graham Ellis reassigns Medicare benefits to County Of Ventura (Ventura, CA). The 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 Graham Ellis'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 Graham Ellis was last updated on October 30, 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.