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

Douglas Hay, MD

Internal Medicine Physician

NPI: 1386690980

4

13 · US News

19

Years Exp.

Colton

CA

Internal Medicine

Specialty

About

Dr. Douglas Hay, MD, is an experienced internal medicine physician based in Colton, CA. He specializes in providing comprehensive care for adolescents, adults, and the elderly, managing a wide range of common and complex illnesses. His expertise includes the diagnosis and treatment of various conditions affecting the heart, kidneys, digestive system, and more.

Practicing Since

May 2006

Gender

Male

Experience

19 years

CA Medical License

#G47396

Practice Type

Group Practice

NPI Number

1386690980
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.

1ST HOSPITAL IP/OBS CARE MODERATE MDM 55 MINUTES

CPT: 99222professional

$166

SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES

CPT: 99233professional

$126

OFFICE/OUTPATIENT ESTABLISHED LOW MDM 20 MIN

CPT: 99213professional

$114

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

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 5 internal medicine physicians in Colton and 5,319 across California on our platform.

See full internal medicine physician cost breakdown in California
Patient Reviews

4

13 reviews

US News

Overall, patient sentiment towards Dr. Douglas Hay, MD, is predominantly positive, with an average rating of 4 out of 5 based on 13 reviews. Patients appreciate his ability to answer questions thoroughly and his friendly demeanor, which contributes to a sense of trust and loyalty. Many reviewers noted that they would recommend him to others and are likely to return for future care. Common themes in praise include Dr. Hay's excellent communication skills, as patients feel he effectively addresses their concerns and explains medical issues clearly. His experience, having practiced for over 20 years, also instills confidence in his expertise, particularly in internal medicine. However, some patients expressed mixed feelings regarding the amount of time spent during appointments and the follow-up care, indicating that while they felt well-informed, they sometimes desired more time for discussion. Criticism primarily revolves around the perceived time constraints during visits and the follow-up process, which some patients felt could be improved. Despite these concerns, the overall feedback suggests that Dr. Hay is a competent and caring physician, making him a viable option for those seeking internal medicine care, especially for patients aged 65 and older.

Location

Address

1300 E COOLEY DR

Colton, CA 92324

Phone

9093704100
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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.