Dr. Diane Christine Hermiz, DO
- Part D claims, 2024
- 159
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 11500 Brookshire Ave, Downey, CA 90241
- Practice phone
- Call (310) 900-8900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St Francis Medical Center
Downey, California
Find Dr. Hermiz'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. Diane Christine Hermiz is an internist in Downey, California
Dr. Hermiz practices at St Francis Medical Center in Downey, California.
Dr. Hermiz's NPI, 1962063925, was assigned on June 20, 2019. Dr. Hermiz graduated from Edward Via College of Osteopathic Medicine - Spartanburg in 2019. Dr. Hermiz holds California license 20A19751.
- NPI
- 1962063925NPI Registry (opens in a new tab)
- NPI enumeration date
- June 20, 2019
- NPI status
- Active
- Practice phone
- (310) 900-8900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Diane Christine Hermiz practices at St Francis Medical Center in Downey, California
Dr. Hermiz's primary practice is St Francis Medical Center, at 11500 Brookshire Ave, Downey, CA 90241 in Los Angeles County. The practice phone is (310) 900-8900.
- St Francis Medical Center11500 Brookshire Ave, Downey, CA 90241 · Los Angeles CountyPhone(310) 900-8900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Diane Christine Hermiz is affiliated with 2 sites of care and 1 medical group
Dr. Hermiz's primary practice is St Francis Medical Center in Downey, California. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Hermiz to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Diane Christine Hermiz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hermiz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St Francis Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diane Christine Hermiz is one of 16,751 internists in California
Internal medicine is Dr. Hermiz's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hermiz is board certified in internal medicine by the American Board of Internal Medicine. Dr. Hermiz is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists kidney failure among the conditions Dr. Hermiz treats.
Internists near Dr. Hermiz
Counts of internists 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. Diane Christine Hermiz's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Hermiz's median patient age at 66, with 100% women.
Dr. Hermiz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Diane Christine Hermiz wrote 159 Medicare Part D claims in 2024
In 2024, Dr. Hermiz wrote 159 Medicare Part D claims for 72 patients. 91% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $3,434 in total drug cost. In 2023, CMS named 26 claims across 2 drugs.
Dr. Hermiz's Part D claims by kind of drug, 2024
- Generic144 claims91%
- Brand-name15 claims9%
Dr. Hermiz'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. Hermiz's Part D claims, 2024
- Antibiotics41%65 of 159 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: 262024: 248%
Drugs named by CMS: 2 in 2024, 2 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. Diane Christine Hermiz graduated from Edward Via College of Osteopathic Medicine - Spartanburg
Dr. Hermiz graduated from Edward Via College of Osteopathic Medicine - Spartanburg in 2019.
- Medical school
- Board certified in internal medicine
- Board certified in 2022 - 2025
- Board certified in 2024 - 2026
- Board certified in 2025 - 2026
- Board certified in 2024 - 2026
- Board certified in 2024 - 2025
- Board certified in 2019 - 2027
- Board certified in 2024 - 2025
- Board certified in 2024 - 2025
- Board certified in 2024 - 2027
- Board certified in 2024 - 2026
- Board certified in 2024 - 2025
- Board certified in 2024 - 2025
Source: Dmand AI Professional Profile Data
Sources for Dr. Diane Christine Hermiz'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Diane Christine Hermiz
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. Diane Christine Hermiz's NPI number?
Dr. Diane Christine Hermiz's NPI number is 1962063925. It was assigned on June 20, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Diane Christine Hermiz?
Dr. Diane Christine Hermiz is an internist in Downey, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Diane Christine Hermiz practice?
Dr. Hermiz practices at 11500 Brookshire Ave, Downey, CA 90241. Dr. Hermiz's primary practice is St Francis Medical Center in Downey, California. Dmand AI also links Dr. Hermiz to 1 group practice or clinic.
What is Dr. Diane Christine Hermiz's office phone number?
The practice phone on file for Dr. Hermiz is (310) 900-8900.
What is Dr. Diane Christine Hermiz's medical license number?
Dr. Hermiz holds California license 20A19751.
What medical group is Dr. Diane Christine Hermiz part of?
Dr. Hermiz is linked to Optum - Downtown Los Angeles.
Is Dr. Diane Christine Hermiz board certified?
Yes. Dr. Hermiz is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Diane Christine Hermiz go to medical school?
Dr. Hermiz graduated from Edward Via College of Osteopathic Medicine - Spartanburg in 2019.
What drugs does Dr. Diane Christine Hermiz prescribe most?
In 2024 Medicare Part D data, Dr. Hermiz's most prescribed drugs by claims were Daptomycin and Cephalexin.
How long has Dr. Diane Christine Hermiz been practicing?
Dr. Hermiz graduated from medical school in 2019, 7 years ago.
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