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Edit this profileAt a glance
- 2793 Loma Vista Rd, Ventura, CA 93003
About Dr. Hornstein
Based in Ventura, CA, James W. Hornstein, M.D. is listed in the NPI registry under family medicine. James graduated from University of California, Geffen School of Medicine in 1980. Medicare claims data shows James provided 2,431 services to 1,180 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month. NPI 1629116587 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 643-9292
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2793 LOMA VISTA RD
Ventura, CA 93003
Conditions Commonly Evaluated or Treated
Within Family Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Bariatrics
Cancer Prevention
Cancer risk
Digestive
Environmental health
- Asbestos Exposure
- Contaminated drinking water exposure
- Heat exhaustion and heat stroke
- Radon gas exposure
- Tick bite and Lyme disease risk
- Toxic Mold Exposure
- Wildfire smoke and air pollution exposure
- Workplace Chemical Exposure
General wellness
Heart health
Infectious Disease
Infectious disease
Kidney health
Lifestyle & wellness
Lifestyle health
Longevity
Metabolic & Lifestyle
Occupational health
Occupational Health
Rashes & allergy
Sexual Health
Sexual health
Substance use
Travel health
Wellness and energy
Workplace health
Wounds & skin
Most searched conditions
Cardiometabolic
Genitourinary and reproductive
Musculoskeletal and pain
Neurologic and behavioral
Respiratory and infectious
Skin
Common childhood and ear conditions
Pain & Joints
Procedures & services
Addiction & habits
Bladder & bowel
Breathing
Cancer Screening
Cancer screening
Checkups & exams
Chronic illness
Diagnostic testing
Diagnostic Tests
- COVID-19 Rapid Test
- COVID-19 testing
- Rapid Flu Swab
- Rapid Strep and Flu Swabs
- Urine Pregnancy Test
- Urine Drug Screen
Diagnostics & screening
Environmental health
Exams
Exams & Screenings
Fitness & body composition
Foot and Leg Pain
Heart & Circulation
Heart & circulation
Immunizations
Infection & Microbiology Tests
Lifestyle & Prevention
Longevity
Lower endoscopy
Metabolic health
Minor Procedures
Occupational health
Occupational Health
Office procedures
- Minor laceration repair
- Removal of a minor skin lesion
- Superficial foreign-body removal
- Earwax removal
- Incision and drainage of an abscess
Post-Op Care
Preventive and evaluation
Preventive Care
Preventive imaging
Preventive interventions
- Vaccinations and immunizations
- Weight-management counseling
- Birth control counseling
- Smoking cessation counseling
Preventive screening
Routine Blood Tests
Screening & labs
Screening and diagnostic testing
Screening and testing
- Blood pressure screening
- Diabetes and prediabetes screening
- Point-of-care laboratory testing
- Cholesterol screening
- Depression screening
- EKG
Skin Procedures
Sleep Health
Travel Health
Travel medicine
Urgent Care Procedures
Wellness
Wellness & Screening
Wellness & Weight
Women's Health
Workplace health
Wound care
Wounds & skin
Sleep
Most searched procedures
Injections
Lungs & Breathing
- Pulmonary function test
Pain Management
Respiratory
Senior Care
Sexual & Reproductive Health
Procedures Most Often Billed to Medicare
2,431 services · 1,180 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
28 | More often than most peers in Family Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
79 | More than most peers in Family Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
33 | More often than most peers in Family Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
566 | More than most peers in Family Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
558 | More often than most peers in Family Medicine |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
420 | More often than most peers in Family Medicine |
| 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 | Office visit | 99439 |
211 | More often than most peers in Family Medicine |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
149 | More than most peers in Family Medicine |
| Advance care planning, first 30 minutes | Office visit | 99497 |
100 | More often than most peers in Family Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
80 | More often than most peers in Family Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family doctors in Ventura 8
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Removal of impacted ear wax 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does James W. Hornstein specialize in?
James W. Hornstein is a family doctor in Ventura, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
Where is James W. Hornstein located?
James W. Hornstein is listed at 2793 Loma Vista Rd, Ventura, CA 93003. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is James W. Hornstein's phone number?
The number on file is (805) 643-9292. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for James W. Hornstein?
James W. Hornstein's National Provider Identifier is 1629116587. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did James W. Hornstein train?
James W. Hornstein attended University of California, Geffen School of Medicine, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How much experience does James W. Hornstein have?
James W. Hornstein has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What does James W. Hornstein do most often?
According to Medicare billing data, James W. Hornstein performs procedures including removal of impacted ear wax; provides treatments such as influenza vaccine, inactivated and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is James W. Hornstein's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by James W. Hornstein. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.