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Dr. Gabriela Diaz Sullivan, MD
NPI1275620023
- Part D claims, 2024
- 651
- Publications
- 1
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sullivan's professional email, personal email and mobile number
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Dr. Gabriela Diaz Sullivan is an internist in Martinez, California
Dr. Sullivan practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Sullivan's NPI, 1275620023, was assigned on October 5, 2006. Dr. Sullivan graduated from UCSF School of Medicine in 2000. Dr. Sullivan's California license number on file is A77056.
NPI and contact details
- NPI
- 1275620023NPI Registry (opens in a new tab)
- NPI enumeration date
- October 5, 2006
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gabriela Diaz Sullivan practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Sullivan's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Dr. Gabriela Diaz Sullivan is affiliated with 1 site of care and 1 medical group
Dr. Sullivan's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is West County Adult Mental Health Services. Dr. Sullivan's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gabriela Diaz Sullivan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sullivan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gabriela Diaz Sullivan is one of 16,751 internists in California
Internal medicine is Dr. Sullivan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Sullivan is board certified in internal medicine by the American Board of Internal Medicine. Dr. Sullivan has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Sullivan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
16,751internists in California35internists in Martinez17internists at Contra Costa Regional Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gabriela Diaz Sullivan's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Sullivan's median patient age at 65, with 61% women.
Dr. Sullivan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women61%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Gabriela Diaz Sullivan wrote 651 Medicare Part D claims in 2024
In 2024, Dr. Sullivan wrote 651 Medicare Part D claims for 50 patients. 84% of them were for generic drugs. CMS names the drug for 392 of them, across 23 drugs with 11 or more claims each, at $42,738 in total drug cost. In 2023, CMS named 302 claims across 16 drugs.
Part D claims, 2024651
Drugs named by CMS23
Total drug cost$42,738
Part D patients50
Dr. Sullivan's Part D claims by kind of drug, 2024
- Generic548 claims84%
- Brand-name and other103 claims16%
Dr. Sullivan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Sullivan's Part D claims, 2024
- Opioids4%23 of 651 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3022024: 39230%
Drugs named by CMS: 23 in 2024, 16 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Gabriela Diaz Sullivan has 1 publication on record
Dmand AI links 1 paper to Dr. Sullivan. Dr. Sullivan's most frequent co-authors are Andrew B. Bindman, MD, Kevin Lawrence Grumbach, MD and Dean David Schillinger, MD.
Papers1
Dr. Sullivan's most frequent co-authors
- Andrew B. Bindman, MD1 shared paper
- Kevin Lawrence Grumbach, MD1 shared paper
- Dean David Schillinger, MD1 shared paper
Recent publications by Dr. Sullivan
See who Dr. Sullivan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sullivan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gabriela Diaz Sullivan graduated from UCSF School of Medicine
Dr. Sullivan graduated from UCSF School of Medicine in 2000.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Gabriela Diaz Sullivan'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Gabriela Diaz Sullivan
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. Gabriela Diaz Sullivan's NPI number?
Dr. Gabriela Diaz Sullivan's NPI number is 1275620023. It was assigned on October 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gabriela Diaz Sullivan?
Dr. Gabriela Diaz Sullivan is an internist in Martinez, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gabriela Diaz Sullivan practice?
Dr. Sullivan practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Sullivan's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California.
What is Dr. Gabriela Diaz Sullivan's office phone number?
The practice phone on file for Dr. Sullivan is (925) 370-5000.
What is Dr. Gabriela Diaz Sullivan's medical license number?
Dr. Sullivan's California license number on file is A77056.
Which hospitals is Dr. Gabriela Diaz Sullivan affiliated with?
Dr. Sullivan practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. Gabriela Diaz Sullivan part of?
Dr. Sullivan is linked to West County Adult Mental Health Services.
Is Dr. Gabriela Diaz Sullivan board certified?
Yes. Dr. Sullivan is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Gabriela Diaz Sullivan go to medical school?
Dr. Sullivan graduated from UCSF School of Medicine in 2000.
What drugs does Dr. Gabriela Diaz Sullivan prescribe most?
In 2024 Medicare Part D data, Dr. Sullivan's most prescribed drugs by claims were Amlodipine Besylate, Metoprolol Succinate and Losartan Potassium.
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How long has Dr. Gabriela Diaz Sullivan been practicing?
Dr. Sullivan graduated from medical school in 2000, 26 years ago.
Does Dr. Gabriela Diaz Sullivan do research?
Dmand AI links 1 publication to Dr. Sullivan.
Who does Dr. Gabriela Diaz Sullivan publish with?
Dr. Sullivan's most frequent co-authors are Andrew B. Bindman, MD (1 shared paper), Kevin Lawrence Grumbach, MD (1 shared paper) and Dean David Schillinger, MD (1 shared paper).
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