Dr. Lizette Denise Ruiz, MD
- Medicare services, 2024
- 288
- Medicare patients, 2024
- 179
- Part D claims, 2024
- 140
- Hospital affiliations
- 3
- Industry payments
- $20
- Practice address
- 1401 South Grand Avenue, Los Angeles, CA 90015
- Practice phone
- Call (213) 748-2411
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ruiz's professional email, personal email and mobile number
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Dr. Lizette Denise Ruiz is an emergency medicine physician in Los Angeles, California
Dr. Ruiz practices at Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health.
Dr. Ruiz's NPI, 1639512668, was assigned on April 9, 2013. Dr. Ruiz graduated from University of Southern California Keck School of Medicine in 2013. Dr. Ruiz holds California license A147989.
- NPI
- 1639512668NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739459769
- NPI enumeration date
- April 9, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 748-2411
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lizette Denise Ruiz practices at Dignity Health - California Hospital Medical Center in Los Angeles, California
Dr. Ruiz's primary practice is Dignity Health - California Hospital Medical Center, at 1401 South Grand Avenue, Los Angeles, CA 90015 in Los Angeles County. The practice phone is (213) 748-2411.
- Dignity Health - California Hospital Medical Center1401 South Grand Avenue, Los Angeles, CA 90015 · Los Angeles CountyPhone(213) 748-2411
Source: Dmand AI Affiliation Data
Dr. Lizette Denise Ruiz is affiliated with 3 sites of care and 5 medical groups
Dr. Ruiz's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. Dr. Ruiz is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is TeamHealth. Dmand AI also links Dr. Ruiz to 1 more hospital and 4 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lizette Denise Ruiz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ruiz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - California Hospital Medical Center | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lizette Denise Ruiz is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Ruiz's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Ruiz is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Ruiz
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. Lizette Denise Ruiz billed Medicare for 288 services in 2024
CMS data shows 288 Medicare services from Dr. Ruiz across 5 procedure codes in 2024, for 179 Medicare patients. Medicare paid $24,633 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ruiz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2102024: 1957%
- Tests and treatments
- 2023: 832024: 9312%
Dr. Ruiz compared with the California median for emergency medicine physicians, 2024
- Dr. Ruiz
- California median
- Medicare services
- 288vs 2659% above
- Medicare patients
- 179vs 24326% below
- Part D claims
- 65vs 62Close to median
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Ruiz's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ruiz and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lizette Denise Ruiz treated 179 Medicare patients in 2024, average age 65
CMS counts 179 Medicare patients who saw Dr. Ruiz in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have high blood pressure, and 64% have high cholesterol. 93% are also on Medicaid. Their average risk score is 2.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ruiz's median patient age at 37, with 56% women.
Dr. Ruiz's Medicare patients by age, 2024
Dr. Ruiz's Medicare patients by sex, 2024
- Women8045%
- Men9955%
Chronic conditions among Dr. Ruiz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol64%
- Diabetes59%
- Arthritis51%
- Chronic kidney disease42%
- Heart failure42%
- Mood disorders42%
- Ischemic heart disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ruiz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lizette Denise Ruiz wrote 140 Medicare Part D claims in 2024
In 2024, Dr. Ruiz wrote 140 Medicare Part D claims for 92 patients. 96% of them were for generic drugs. CMS names the drug for 65 of them, across 4 drugs with 11 or more claims each, at $210 in total drug cost. In 2023, CMS named 41 claims across 3 drugs.
Dr. Ruiz's Part D claims by kind of drug, 2024
- Generic135 claims96%
- Brand-name and other5 claims4%
Dr. Ruiz'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. Ruiz's Part D claims, 2024
- Opioids9%12 of 140 claims
- Antibiotics25%35 of 140 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: 412024: 6559%
Drugs named by CMS: 4 in 2024, 3 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
How Dr. Lizette Denise Ruiz takes part in Medicare
Dr. Ruiz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lizette Denise Ruiz received $20 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Ruiz from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $20.
Companies that paid Dr. Ruiz the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lizette Denise Ruiz graduated from University of Southern California Keck School of Medicine
Dr. Ruiz graduated from University of Southern California Keck School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lizette Denise Ruiz'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Lizette Denise Ruiz
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. Lizette Denise Ruiz's NPI number?
Dr. Lizette Denise Ruiz's NPI number is 1639512668. It was assigned on April 9, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Lizette Denise Ruiz?
Dr. Lizette Denise Ruiz is an emergency medicine physician in Los Angeles, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Lizette Denise Ruiz practice?
Dr. Ruiz practices at 1401 South Grand Avenue, Los Angeles, CA 90015. Dr. Ruiz's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. Dmand AI also links Dr. Ruiz to 1 hospital and 4 medical groups.
What is Dr. Lizette Denise Ruiz's office phone number?
The practice phone on file for Dr. Ruiz is (213) 748-2411.
What is Dr. Lizette Denise Ruiz's medical license number?
Dr. Ruiz holds California license A147989.
Which hospitals is Dr. Lizette Denise Ruiz affiliated with?
Dr. Ruiz practices at Dignity Health - California Hospital Medical Center in Los Angeles, California. Dr. Ruiz is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. Dmand AI links Dr. Ruiz to 1 more hospital.
What medical group is Dr. Lizette Denise Ruiz part of?
Dr. Ruiz is linked to TeamHealth. Dmand AI links Dr. Ruiz to 4 more medical groups.
Does Dr. Lizette Denise Ruiz accept Medicare?
Yes. CMS data shows Dr. Ruiz billed Medicare for 288 services in 2024, and Dr. Ruiz accepts Medicare assignment.
How many Medicare patients does Dr. Lizette Denise Ruiz see?
CMS counts 179 Medicare patients who saw Dr. Ruiz in 2024, with an average age of 65.
What services does Dr. Lizette Denise Ruiz bill to Medicare?
In 2024, Dr. Ruiz's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and critical care (99291).
Show 4 more questionsShow fewer questions
Where did Dr. Lizette Denise Ruiz go to medical school?
Dr. Ruiz graduated from University of Southern California Keck School of Medicine in 2013.
What drugs does Dr. Lizette Denise Ruiz prescribe most?
In 2024 Medicare Part D data, Dr. Ruiz's most prescribed drugs by claims were Ibuprofen, Cephalexin and Famotidine.
Has Dr. Lizette Denise Ruiz received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Ruiz from 1 company from 2018 to 2018. The largest total came from Abbvie Inc.
How long has Dr. Lizette Denise Ruiz been practicing?
Dr. Ruiz graduated from medical school in 2013, 13 years ago.
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