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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DOUGLAS J. HAY MD
NPI 1386690980
Internal Medicine in Colton, CA

Active since May 25, 2006PECOS Enrolled
1300 E COOLEY DR, COLTON, CA 92324(909) 370-4100(909) 796-4158 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Douglas J. Hay Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DOUGLAS J. HAY MD (NPI 1386690980) is an individual internal medicine provider in Colton, California, licensed in California (G47396) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1386690980
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DOUGLAS J. HAYCredential: MD
Location Address1300 E COOLEY DRColton, CA 92324-3905
Mailing AddressPo Box 2200Redlands, CA 92373-0722 · (909) 793-3311 · Fax (909) 796-4158
Phone(909) 370-4100
Fax(909) 796-4158
Sole ProprietorNo
Enumeration DateMay 25, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1386690980 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G47396
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1300 E COOLEY DR, Colton, CA 92324
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Other Identifiers 1

Medicaid00G473960CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Douglas J. Hay Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92324 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GLEN R. GAERTE O.D.
Optometrist
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100
BEAVER MEDICAL GROUP, LP
Optometrist
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100
ARTURO SANTIAGO VAZQUEZ M.D.
Internal Medicine
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100
DR. KELVIN MA D.O.
Family Medicine
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 970-4100
DR. CALVIN MINH DUONG M.D.
Internal Medicine
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100
CHRISTINE J RENTZ P.A.
Physician Assistant
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100
MRS. FRANCESCA AMANDA HARPER
Marriage & Family Therapist
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 580-3714
USMAN SIDDIQUI
Family Medicine
1300 E COOLEY DR
COLTON, CA 92324
San Bernardino County (909) 370-4100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Douglas Hay's NPI number?

The NPI number for Douglas Hay is 1386690980. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Where is Douglas Hay located?

Douglas Hay practices at 1300 E Cooley Dr, Colton, CA 92324. The listed phone number is (909) 370-4100.

What is Douglas Hay's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Douglas Hay enrolled in Medicare?

Yes. Douglas Hay is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Douglas Hay was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.