42 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Olson, Gastroenterologist in Modesto, CA?
Dr. Calvin Olson, MD is a Gastroenterologist, who primarily practices in Modesto, CA with 2 additional practice locations. He has been practicing for over 42 years and is board certified by the American Board of Internal Medicine. Dr. Olson graduated from University of California and completed his residency at Ucla Med Ctr, Gastroenterology; Univ Hosp-S Tx Med Ctr, Internal Medicine. Dr. Olson is fluent in English, and is currently seeing new patients. Dr. Olson’s practice accepts UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Olson’s office at (209) 550-4750.
Where did Dr. Olson go to medical school and complete their residency?
Residency: Ucla Med Ctr, Gastroenterology; Univ Hosp-S Tx Med Ctr, Internal Medicine | University of Texas Affiliated Hospitals | University of Arkansas for Medical Sciences Regional Centers (South Central) Program
Medical School: University of Ca, San Francisco, Sch of Med, San Francisco Ca | University of California
Is Dr. Olson board certified in Gastroenterologist?
Yes, Dr. Calvin Olson, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Olson speak?
Dr. Olson and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Olson treat?
As a Gastroenterologist, Dr. Olson diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Olson. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Colon Polyps
- History of Other Digestive System Disease
- Non-Infectious Gastroenteritis and Colitis
- Colonic Polyps
- Digestive Disease
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
- Past GI Disorder
- Previous Digestive Problem
- History of Gastrointestinal Illness
- Inflammation of Stomach and Intestines
- Non-Bacterial Colitis
- Gut Inflammation
ICD-10 Codes:
- Z86010: Personal history of colon polyps
- Z8719: Personal history of other diseases of the digestive system
- Z860100: Personal history of colon polyps, unspecified
- K529: Noninfective gastroenteritis and colitis, unspecified
Also known as:
- Fatty Liver Disease
- Liver Disease
- Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
- Nonalcoholic Fatty Liver Disease & NASH in Children
- NAFLD
- NASH
- Hepatic steatosis
ICD-10 Codes:
- K760: Fatty (change of) liver, not elsewhere classified
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- History of Adenomatous and Serrated Colon Polyps
- Past Colon Polyps
- Previous Adenomas
- History of Precancerous Colon Growths
ICD-10 Codes:
- Z860101: Personal history of adenomatous and serrated colon polyps
Also known as:
- Crohn's Disease
- Crohn’s Disease
- Small Bowel Crohn's with Issues', 'Ileitis with Complications', 'Complicated Small Intestine Crohn's
- Complicated Crohn's Disease', 'Inflammatory Bowel Disease (IBD) with Complications', 'Panenteric Crohn's with Complications
ICD-10 Codes:
- K50019: Crohn's disease of small intestine with unspecified complications
- K50819: Crohn's disease of both small and large intestine with unspecified complications
Also known as:
- Other Specific Abnormal Blood Chemistry Results
- Blood
- Specified Blood Chemistry Imbalance
- Unusual Blood Chemistry Findings
- Specific Blood Panel Abnormalities
ICD-10 Codes:
- R7989: Other specified abnormal findings of blood chemistry
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Abnormal Bowel Movements
- Bowel Movement
- Unusual stool
- Changes in poop
- Fecal changes
ICD-10 Codes:
- R195: Other fecal abnormalities
Also known as:
- Irritable Bowel Syndrome with Diarrhea
- Irritable Bowel Syndrome with Constipation
- Irritable Bowel Syndrome
- Irritable Bowel Syndrome (IBS)
- IBS-D
- Diarrhea-Predominant IBS
- Spastic Colon with Diarrhea
- IBS-C
- Constipation-Predominant IBS
- Spastic Colon with Constipation
ICD-10 Codes:
- K580: Irritable bowel syndrome with diarrhea
- K581: Irritable bowel syndrome with constipation
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
Also known as:
- Family History of Digestive Organ Cancer
- Cancer
- Family History
- Genetic risk for gastrointestinal cancer
- Family history of GI cancer
- Hereditary digestive cancer
ICD-10 Codes:
- Z800: Family history of malignant neoplasm of digestive organs
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Also known as:
- Hemochromatosis
- Hereditary hemochromatosis
- Iron Overload
- Iron Storage Disease
ICD-10 Codes:
- E83119: Hemochromatosis, unspecified
Which procedures does Dr. Olson perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Calvin Olson may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Olson's office.
Does Dr. Olson accept my insurance?
Dr. Olson accepts most major insurance plans. Important: Please call our office at (209) 550-4750 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Olson accept in Modesto, CA?
Dr. Olson in Modesto, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Health Plan
BCBS Unspecified
Centene
Central California Alliance for Health
CVS Health (formerly Aetna)
Department of Veterans Affairs
Elevance Health Inc. (formerly Anthem)
Health Plan of San Joaquin
UnitedHealthcare
Western Growers Association
View All Insurances
Where is Dr. Olson's office located?
Dr. Calvin Olson's Primary Practice
1409 E Briggsmore Ave
Modesto, CA 95355
(209) 550-4750
What is Dr. Olson's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Olson's National Provider Identifier (NPI) number is 1740230713.
What common questions do patients ask about Dr. Olson?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Olson
What is Dr. Calvin Olson's specialty?
Dr. Olson is a Gastroenterologist near Modesto, CA. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Olson to book an appointment today.
Is this Dr. Calvin Olson affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Olson is affiliated with Memorial Medical Center - Modesto, Ca which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Calvin Olson accepting new patients in Modesto, CA?
Yes, Dr. Calvin Olson is accepting new patients at this time.
Does Dr. Calvin Olson offer online booking?
Please contact Dr. Olson's office at (209) 550-4750 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Calvin Olson?
Please contact Dr. Olson's office at (209) 550-4750 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Calvin Olson have?
Dr. Calvin Olson is certified by the American Board of Internal Medicine.
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