Dr. Octavio J. Diaz, MD
- Hospital affiliations
- 1
- Industry payments
- $324
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 123 Summer Street, Worcester, MA 01608
- Practice phone
- Call (508) 363-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diaz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Octavio J. Diaz is an emergency medicine physician in Worcester, Massachusetts
Dr. Diaz practices at Saint Vincent Hospital in Worcester, Massachusetts, part of Tenet Healthcare.
Dr. Diaz's NPI, 1699880658, was assigned on August 20, 2006. Dr. Diaz holds Massachusetts license 60145.
- NPI
- 1699880658NPI Registry (opens in a new tab)
- NPI enumeration date
- August 20, 2006
- NPI status
- Active
- Practice phone
- (508) 363-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Octavio J. Diaz practices at Saint Vincent Hospital in Worcester, Massachusetts
Dr. Diaz's primary practice is Saint Vincent Hospital, at 123 Summer Street, Worcester, MA 01608 in Worcester County. The practice phone is (508) 363-5000.
- Saint Vincent Hospital123 Summer Street, Worcester, MA 01608 · Worcester CountyPhone(508) 363-5000
Source: Dmand AI Affiliation Data
Dr. Octavio J. Diaz is affiliated with 2 sites of care
Dr. Diaz's primary practice is Saint Vincent Hospital in Worcester, Massachusetts, part of Tenet Healthcare. Dmand AI also links Dr. Diaz to 1 hospital outpatient department, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Octavio J. Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Vincent Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Tenet Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Octavio J. Diaz is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Diaz is licensed in Massachusetts.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
Emergency medicine physicians near Dr. Diaz
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Octavio J. Diaz's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Diaz's median patient age at 63, with 0% women.
Dr. Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Octavio J. Diaz received $324 in industry payments from 2023 to 2025
CMS Open Payments shows 5 general payments to Dr. Diaz from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $207.
General payments to Dr. Diaz by program year, 2023 to 2025
Companies that paid Dr. Diaz the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Octavio J. Diaz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Octavio J. Diaz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Octavio J. Diaz's NPI number?
Dr. Octavio J. Diaz's NPI number is 1699880658. It was assigned on August 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Octavio J. Diaz?
Dr. Octavio J. Diaz is an emergency medicine physician in Worcester, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Octavio J. Diaz practice?
Dr. Diaz practices at 123 Summer Street, Worcester, MA 01608. Dr. Diaz's primary practice is Saint Vincent Hospital in Worcester, Massachusetts, part of Tenet Healthcare. Dmand AI also links Dr. Diaz to 1 hospital outpatient department.
What is Dr. Octavio J. Diaz's office phone number?
The practice phone on file for Dr. Diaz is (508) 363-5000.
What is Dr. Octavio J. Diaz's medical license number?
Dr. Diaz holds Massachusetts license 60145.
Which hospitals is Dr. Octavio J. Diaz affiliated with?
Dr. Diaz practices at Saint Vincent Hospital in Worcester, Massachusetts.
Has Dr. Octavio J. Diaz received payments from drug or device companies?
CMS Open Payments shows $324 in general payments to Dr. Diaz from 3 companies from 2023 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Octavio J. Diaz been practicing?
Dr. Diaz's NPI was assigned in 2006.
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