DR. KAREN SIMON M.D.
NPI 1548384167
Internal Medicine - Gastroenterology in Oxnard, CA

Q: What is Karen Simon's NPI number?

The NPI number for Karen Simon is 1548384167. It was assigned to this individual provider in the NPPES registry on March 19, 2007.

Q: What is Karen Simon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Karen Simon was last updated on December 9, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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 March 19, 2007PECOS EnrolledAccepts Medicare Assignment

83.99/100

CMS Quality Rating

2241 WANKEL WAY, SUITE A, OXNARD, CA 93030(805) 983-0521(805) 485-1484 Get Directions Write a Review

NPPES record last updated: December 9, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 9, 2015, Nov 30, 2015 (2 updates tracked since 2015).

On this page

About Dr. Karen Simon M.d. NPPES

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

DR. KAREN SIMON M.D. (NPI 1548384167) is an individual gastroenterology provider in Oxnard, California, licensed in California (A81831) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (2001).

NPPES Registry Identity

NPI1548384167

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. KAREN SIMONCredential: M.D.

Location Address2241 WANKEL WAY, SUITE AOxnard, CA 93030

Mailing AddressP.o. Box 50640, Ventura County GastroenterologyOxnard, CA 93031 · (805) 983-0521 · Fax (805) 485-1484

Phone(805) 983-0521

Fax(805) 485-1484

Sole ProprietorNo

Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2001

Enumeration DateMarch 19, 2007

Last NPPES UpdateDecember 9, 20152 updates tracked since enumeration

✔ NPI 1548384167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A81831

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedSpecialistTaxonomy 174400000X · License A81831 (CA)

Also ListedInternal MedicineTaxonomy 207R00000X · License A81831 (CA)

2241 WANKEL WAY, Oxnard, CA 93030

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Other Identifiers 1

Medicare UPINI24016CA

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. Karen Simon 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 ID5294785614

PECOS Enrollment IDI20050124000914

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 19

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 for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

1,172 services116 patients

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.

644 services117 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.

220 services189 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.

171 services137 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

141 services80 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

140 services139 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

119 services119 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

103 services103 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

91 services91 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

89 services89 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

88 services15 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

79 services15 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

55 services54 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

27 services27 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

25 services25 patients

Ultrasound scan of organ tissue for measuring elasticity 76981

An ultrasound scan of organ tissue measures elasticity, or flexibility. This non-invasive procedure uses sound waves to create images of the inside of your body. It helps in assessing the health of various organs by detecting changes in their stiffness or softness.

18 services18 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

15 services15 patients

Imaging of digestive tract done from the inside of the digestive tract 91110

This procedure, known as an endoscopy, involves a small camera being passed into the digestive tract. It helps doctors to see the inside of your digestive system in detail. This can aid in diagnosing conditions or planning treatments. It's generally safe and can provide valuable information.

14 services13 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

13 services13 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.99/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

79.4

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy skin barrier, pectin-based, paste, per ounce A4406

DME-Orthotic Devices · category DF010N

2 suppliers11 claims36 services$5.24 avg. paid by Medicare

Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150

Other-Enteral and Parenteral · category OB006N

1 supplier19 claims10,197 services$0.30 avg. paid by Medicare

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185

Other-Enteral and Parenteral · category OB005N

1 supplier49 claims1,005 services$11.26 avg. paid by Medicare

Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements and vitamins, including preparation, any strength, 74 to 100 grams of protein - premix B4197

Other-Enteral and Parenteral · category OB005N

1 supplier50 claims336 services$280.32 avg. paid by Medicare

Parenteral nutrition supply kit; premix, per day B4220

Other-Enteral and Parenteral · category OB005N

1 supplier50 claims336 services$8.02 avg. paid by Medicare

Parenteral nutrition administration kit, per day B4224

Other-Enteral and Parenteral · category OB005N

1 supplier50 claims336 services$25.06 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 12

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

TESSA LEONE SHULER FNP-C

Internal Medicine

2241 WANKEL WAY
OXNARD, CA 93030

Ventura County (805) 983-0425

VENTURA COUNTY GASTROENTEROLOGY MEDICAL GRP INC

Internal Medicine (Gastroenterology)

2241 WANKEL WAY, STE A
OXNARD, CA 93030

Ventura County (805) 983-0521

DR. JOHN C. BILLESDON M.D.

Internal Medicine (Gastroenterology)

2241 WANKEL WAY, STE. A.
OXNARD, CA 93030

Ventura County (805) 983-0521

KHAMAJ DAVE MD

Internal Medicine (Cardiovascular Disease)

2241 WANKEL WAY, STE C
OXNARD, CA 93030

Ventura County (805) 983-0922

DR. SUKHPREET SINGH WALIA M.D.

Internal Medicine

2241 WANKEL WAY, STE A
OXNARD, CA 93030

Ventura County (805) 983-0521

DR. PAUL M. SANCHEZ M.D.

Internal Medicine (Gastroenterology)

2241 WANKEL WAY, STE. A.
OXNARD, CA 93030

Ventura County (805) 983-0521

DAVID E SCHMIDT MD

Internal Medicine (Cardiovascular Disease)

2241 WANKEL WAY, STE C
OXNARD, CA 93030

Ventura County (805) 983-0922

SCOTT A ZAGER MD

Internal Medicine (Cardiovascular Disease)

2241 WANKEL WAY, STE C
OXNARD, CA 93030

Ventura County (805) 983-0922

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 Karen Simon's NPI number?

The NPI number for Karen Simon is 1548384167. It was assigned to this individual provider in the NPPES registry on March 19, 2007.

Where is Karen Simon located?

Karen Simon practices at 2241 Wankel Way Suite A, Oxnard, CA 93030. The listed phone number is (805) 983-0521.

What is Karen Simon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Karen Simon enrolled in Medicare?

Yes. Karen Simon 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 Karen Simon was last updated on December 9, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.