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Profile last updated: March 2026How we source this data
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Provider Profile

Mark Weissig, M.D.

Internal Medicine Physician

NPI: 1649266032

5

127 · Healthgrades

20

Years Exp.

Fullerton

CA

Internal Medicine

Specialty

About

Dr. Weissig has been practicing Internal Medicine for several years, with visit costs starting at approximately $176. He is committed to disease prevention and wellness, providing a holistic approach to patient health.

Practicing Since

Sep 2005

Gender

Male

Experience

20 years

CA Medical License

#G49175

Practice Type

Group Practice

NPI Number

1649266032

Additional Specialties

Internal Medicine
Avg. Self-Pay Rate

Self-pay rates shown are averages across all procedures on file for this provider, sourced from Transparency in Coverage Act data. These are cash-pay prices — what you'd typically pay without using insurance. Actual rates may vary by procedure, location, and date of service.

OFFICE/OUTPATIENT NEW HIGH MDM 60 MINUTES

CPT: 99205professional

$346

CRITICAL CARE ILL/INJURED PATIENT INIT 30-74 MIN

CPT: 99291professional

$329

1ST HOSPITAL IP/OBS CARE HIGH MDM 75 MINUTES

CPT: 99223professional

$304

Cost data sourced from insurer Transparency in Coverage Act filings. Costs shown are negotiated rates and may not reflect your actual out-of-pocket cost. Learn about our data

Local Market

Fullerton Low

$82

Fullerton Typical

$202

Fullerton High

$204

In Fullerton, a typical internal medicine physician visit costs $202, ranging from $82 to $204. This is 138% above the California state median of $85. Based on 30 providers with published pricing data.

Dr. Mark Weissig, MD's rate of $204 is 1% above the Fullerton median.

California Low

$80

California Typical

$85

California High

$250

Across California, a internal medicine physician visit ranges from $80 to $250 with a median of $85. This is 7% below the national median of $91. Based on 2,792 providers with published pricing data.

There are 26 internal medicine physicians in Fullerton and 5,319 across California on our platform.

See full internal medicine physician cost breakdown in California
Patient Reviews

5

127 reviews

Healthgrades

Dr. Mark Weissig, MD, a pulmonologist affiliated with Providence St. Jude Medical Center in Fullerton, California, has received overwhelmingly positive feedback from his patients, reflected in an impressive overall rating of 5 out of 5 based on 675 reviews. Patients frequently commend his compassionate and thorough approach to care, highlighting his ability to clearly explain conditions and treatment options. Many reviews also mention the friendly and accommodating staff, as well as the ease of scheduling appointments, including telehealth options. While the reviews are predominantly positive, there are some common criticisms that potential patients should consider. A few patients have noted longer wait times for appointments, which may be a factor for those with tight schedules. However, these concerns are generally outweighed by the high level of satisfaction expressed regarding Dr. Weissig's expertise in treating various respiratory conditions, including asthma and interstitial lung disease. Overall, Dr. Weissig is highly recommended for those seeking a knowledgeable and caring pulmonologist.

Location

Address

2141 N HARBOR BLVD

SUITE 25000

Fullerton, CA 92835

Phone

7146268610
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Momentary Lab sources provider data from the CMS NPI Registry and cost data from federal Transparency in Coverage files. Reviews aggregated from Healthgrades, Vitals, WebMD, and other public sources. Learn how we verify and update healthcare information.

This page is for informational purposes only and does not constitute medical advice. Cost estimates are based on publicly available negotiated rate data and may not reflect your actual out-of-pocket cost. Always consult with your healthcare provider and insurance company for accurate cost information and medical decisions.