DR. DOROTHEA CLAYTON M.D.
NPI 1053596395
Internal Medicine in Oxnard, CA

Q: What is Dorothea Clayton's NPI number?

The NPI number for Dorothea Clayton is 1053596395. It was assigned to this individual provider in the NPPES registry on January 6, 2008. The provider is also known as Dorothea Clayton M.D..

Q: What is Dorothea Clayton's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Dorothea Clayton was last updated on July 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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 January 06, 2008PECOS EnrolledAccepts Medicare Assignment

3641 W 5TH ST, OXNARD, CA 93030(805) 985-5505 Get Directions Write a Review

NPPES record last updated: July 11, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Dorothea Clayton M.d. NPPES

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

DR. DOROTHEA CLAYTON M.D. (NPI 1053596395) is an individual internal medicine provider in Oxnard, California, licensed in California (A103688) and active in the NPI registry since January 2008. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2005).

NPPES Registry Identity

NPI1053596395

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. DOROTHEA CLAYTONCredential: M.D.

Location Address3641 W 5TH STOxnard, CA 93030

Mailing Address5855 Olivas Park DrVentura, CA 93003-7672 · (805) 667-2801

Phone(805) 985-5505

Sole ProprietorYes

Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2005

Enumeration DateJanuary 6, 2008

Last NPPES UpdateJuly 11, 2018

✔ NPI 1053596395 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in CA · A103688✔ Licensed in IL · 125-048954

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

3641 W 5TH ST, Oxnard, CA 93030

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Other Names 1

Former Name (1)Dorothea Clayton M.d.

Secondary Practice Locations 2

Location 15800 Santa Rosa Rd Ste 149Camarillo, CA 93012-7061 · Phone (805) 465-8900

Location 27301 Medical Center Dr, 500West Hills, CA 91307-1904 · Phone (818) 226-1211 · Fax (818) 992-6853

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

Dr. Dorothea Clayton M.d. 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 ID5496813842

PECOS Enrollment IDI20081029000243

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

Medicare enrollment records show Dorothea Clayton reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community Memorial Health System

Same address

Multi-Specialty

3641 W 5TH ST
Oxnard, CA 93030

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

NPI 1346288875 (805) 985-5505

Healthcare Partners Affiliates Medical Group

55 mi

Internal Medicine

1120 W WASHINGTON BLVD
Los Angeles, CA 90015

Reassigned Medicare billing, California enrollment
2,052 clinicians in this Medicare group

NPI 1659312593 (213) 623-2225

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 8

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.

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

378 services55 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.

229 services106 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

82 services82 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

80 services55 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

33 services24 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

25 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93030 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.

Referred Medical Equipment & Supplies CMS DME claims

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

7 suppliers14 claims27 services$6.67 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 10

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

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