OSLER JAY J. GUZON MD – NPI #1285683888
Internal Medicine

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Health Care Provider Taxonomy Code for Internal Medicine

OSLER JAY GUZON is a physician located in SAINT LOUIS, MO. NPPES has assigned the NPI number 1285683888 to OSLER JAY GUZON on May 09, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207RC0000X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Cardiovascular Disease

The NPI profile was last updated on Aug 13, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for OSLER JAY GUZON below.

NPI Profile for
OSLER JAY J. GUZON

NPI Number
1285683888
Enumeration Date

(more than 20 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
OSLER JAY J. GUZON
Credentials
MD
Primary location
5201 MID AMERICA PLZ
DIV IM CARDIOLOGY, STE 2300
SAINT LOUIS, MO 63129-0002
Phone: (314) 362-1291 Fax: (314) 362-4278
1 Other location(s):
1101 W Liberty St
Farmington, MO 63640-1921
Phone: (573) 705-1272
Mailing address
PO BOX 7412011
CHICAGO, IL 60674-2011
Phone: (314) 362-1291 Fax: (314) 362-4278
Sole Proprietor
No
Updated
Certification Date
May 23, 2023

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Identifiers

Identifiers for OSLER JAY GUZON

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
medicaidMO204403802
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RC0000X
- Internal Medicine / Cardiovascular Disease (Primary)		 MO 2005013486
207R00000X
- Internal Medicine		 MO 2005013486

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Endpoint

Health Information Exchange (HEI)

HEI is the mobilization of health care information electronically across organizations within a region, community or hospital system. Endpoints provide a simple and secure way for participants to send authenticated, encrypted health information directly to known, trusted recipients over the internet such as primary care physicians, specialists, hospitals, labs, etc.

Endpoint
https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
Endpoint type
FHIR URL
Endpoint Description
Content Type
Affiliation
Y
Endpoint Location
5201 MID AMERICA PLZ,
SAINT LOUIS, MO 77025-1669

Additional Information

Education
UNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE - Graduated 2001
Offers Telehealth Services
Yes - Telehealth services allows you to talk to your health care provider using audio/video communications, such as Zoom, without actually going in to the doctor's office
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
OSLER JAY GUZON is affiliated with the following medical group(s):
  • HOSPITAL
    • CENTRAL DUPAGE HOSPITAL
      25 NORTH WINFIELD ROAD
      WINFIELD, IL 60190
    • MERCY HOSPITAL JEFFERSON
      1400 US HIGHWAY 61
      FESTUS, MO 63028
    • MISSOURI BAPTIST MEDICAL CENTER
      3015 N BALLAS RD
      TOWN AND COUNTRY, MO 63131
    • PARKLAND HEALTH CENTER
      1101 W LIBERTY
      FARMINGTON, MO 63640
    • WASHINGTON COUNTY MEMORIAL HOSPITAL
      300 HEALTH WAY
      POTOSI, MO 63664

Why is my NPI data (personal information) being displayed publicly?
If you have an active NPI profile, your profile is required to be disclosed according to the FOIA and eFOIA. HIPAA also requires covered providers to share their NPI with other providers, health plans, clearinghouses and any entity that may need it for billing purposes.

How do I correct or change the NPI data displayed here?
At any time, providers can make changes to their NPI profile at NPPES. Login to NPPES to make changes online or call (800) 465-3203 for assistance. Changes made at NPPES will be reflected on this web site within a few days.

Can I hide my NPI profile from the public?
Unfortunately, No. The NPPES discloses health care provider data under the Freedom of Information Act to the public, which means anyone may request such information directly from the National Plan & Provider Enumeration System. See the complete CMS Data Dissemination Notice here.