Mark Janssen, MD
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- NPI Number
- 1407923345
- Provider Type
- Individual Practitioner
- Credential
- MD
- Primary Specialty
- Pathology - Anatomic Pathology & Clinical Pathology
- License Number
- A24214
- Practice Address
- 441 N Lakeview AVE
- City, State ZIP
- Anaheim, CA 92807
- Phone
- (888) 988-2800
- Last Updated
- June 8, 2026
- Source
- Publicly available data
Mark Janssen, MD is a pathology - anatomic pathology & clinical pathology provider located in Anaheim, CA. They offer pathology - anatomic pathology & clinical pathology services to patients in the Anaheim area.
As a pathology - anatomic pathology & clinical pathology provider in Anaheim, this clinician evaluates and treats patients for a range of common conditions seen in Anaheim and throughout CA.
The practice is located at 441 N Lakeview AVE, Anaheim, CA 92807. Patients can call 8889882800 to schedule an appointment or use the directions link above to find the office from anywhere in the area.
Patients typically visit this provider for common reasons to schedule a visit include annual checkups, new or worsening symptoms, medication refills, lab work, preventive screenings, chronic condition management, and second opinions.
If you plan to see this provider, it is a good idea to confirm that the practice accepts your insurance and is in-network before scheduling. Coverage details vary by plan, and our quote tool can help you compare options in CA.
This profile was last verified on June 8, 2026. Provider information is sourced from publicly available data and may not reflect recent changes. Please confirm details directly with the practice before scheduling.
Call for hours and appointments. Hours may vary by provider and location.
A patient’s guide to pathology - anatomic pathology & clinical pathology care in Anaheim, CA.
What a Pathology - Anatomic Pathology & Clinical Pathology provider does
Healthcare providers diagnose, treat, and help prevent illness and injury. They work with patients to manage ongoing conditions, interpret test results, prescribe medications when appropriate, and coordinate care with other specialists. Most providers accept both insured and self-pay patients, and many offer telehealth visits for routine concerns.
Common conditions treated
Common conditions evaluated include high blood pressure, diabetes, respiratory infections, allergies, skin conditions, digestive complaints, headaches, and musculoskeletal pain. Providers also handle preventive screenings and routine lab work.
Common reasons to schedule a visit
Common reasons to schedule a visit include annual checkups, new or worsening symptoms, medication refills, lab work, preventive screenings, chronic condition management, and second opinions.
What to expect during a visit
During a typical visit, the provider will review your medical history, ask about current concerns, perform a relevant examination, and recommend next steps such as lifestyle changes, prescriptions, additional testing, or specialist referrals. Bring a list of current medications, recent test results, and questions you would like answered.
Insurance coverage considerations
Most major insurance plans cover preventive care and medically necessary visits, but copays, deductibles, and network restrictions vary. Contact your insurance carrier or use our quote tool to confirm a provider is in-network before scheduling.
How to choose the right pathology - anatomic pathology & clinical pathology provider in Anaheim
When choosing a healthcare provider, look for board certification, convenient location and hours, accepted insurance plans, and a communication style that fits your preferences. Patient reviews and hospital affiliations can also help you make a confident decision.
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Insurance acceptance not listed
The public NPI registry does not include insurance acceptance data. Contact the office directly to ask if they accept your insurance plan. You can also use our quote tool to find health plans in CA.
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Common questions about Mark Janssen, MD in Anaheim, CA.
How do I make an appointment with Mark Janssen, MD?
Call Mark Janssen, MD directly at their Anaheim office to schedule a visit. You can also use the contact form on this page to send a message and the practice will respond.
Does Mark Janssen, MD accept insurance?
Provider insurance information is not included in the public NPI registry data that powers this directory. Contact the office directly to ask whether they accept your specific insurance plan. You can also use our quote tool to find health plans in CA.
What are the office hours for Mark Janssen, MD in Anaheim?
Office hours for Mark Janssen, MD in Anaheim are not currently published. Call the practice directly to confirm hours before your visit.
Is parking available at Mark Janssen, MD's Anaheim location?
Most provider offices in Anaheim offer on-site or nearby street parking. Call Mark Janssen, MD in Anaheim ahead of time to confirm parking options and accessibility accommodations.
Does Mark Janssen, MD accept walk-in appointments?
Walk-in availability for pathology - anatomic pathology & clinical pathology providers varies by location and day. Call ahead to confirm same-day availability before visiting.
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Claim ProfileData is sourced from publicly available records. Public records do not confirm active license status, quality of care, insurance acceptance, or network participation. Please verify details directly with the provider before scheduling. Last updated June 8, 2026.