Dr. Catherine A. Liou, DO
- Medicare services, 2024
- 333
- Medicare patients, 2024
- 142
- Part D claims, 2024
- 191
- Hospital affiliations
- 1
- Industry payments
- $473
- Practice address
- 2825 Capitol Avenue, Sacramento, CA 95816
- Practice phone
- Call (916) 454-2222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Catherine A. Liou is an internist in Sacramento, California
Dr. Liou practices at Sutter Medical Center, Sacramento in Sacramento, California, part of Sutter Health.
Dr. Liou's NPI, 1255969762, was assigned on March 30, 2020. Dr. Liou holds California license 20A21569.
- NPI
- 1255969762NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850836446
- NPI enumeration date
- March 30, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 454-2222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine A. Liou practices at Sutter Medical Center, Sacramento in Sacramento, California
Dr. Liou's primary practice is Sutter Medical Center, Sacramento, at 2825 Capitol Avenue, Sacramento, CA 95816 in Sacramento County. The practice phone is (916) 454-2222.
- Sutter Medical Center, Sacramento2825 Capitol Avenue, Sacramento, CA 95816 · Sacramento CountyPhone(916) 454-2222
Source: Dmand AI Affiliation Data
Dr. Catherine A. Liou is affiliated with 3 sites of care and 1 medical group
Dr. Liou's primary practice is Sutter Medical Center, Sacramento in Sacramento, California, part of Sutter Health. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Liou to 1 more group practice or clinic and 1 hospice, 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. Catherine A. Liou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liou practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Medical Center, Sacramento | Available with a free account |
| +2 more affiliated sites | 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 Sutter Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Catherine A. Liou is one of 16,751 internists in California
Internal medicine is Dr. Liou's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Liou is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Liou
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. Catherine A. Liou billed Medicare for 333 services in 2024
CMS data shows 333 Medicare services from Dr. Liou across 4 procedure codes in 2024, for 142 Medicare patients. Medicare paid $30,358 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Liou compared with the California median for internists, 2024
- Dr. Liou
- California median
- Medicare services
- 333vs 3618% below
- Medicare patients
- 142vs 1516% below
- Part D claims
- 32vs 42192% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Liou'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. Liou and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine A. Liou treated 142 Medicare patients in 2024, average age 74
CMS counts 142 Medicare patients who saw Dr. Liou in 2024. The largest group is 65 to 74, with 49 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 2.71, 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. Liou's median patient age at 64, with 46% women.
Dr. Liou's Medicare patients by age, 2024
Dr. Liou's Medicare patients by sex, 2024
- Women7351%
- Men6949%
Chronic conditions among Dr. Liou's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease53%
- Arthritis52%
- Ischemic heart disease51%
- Heart failure47%
- Diabetes42%
- Mood disorders40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Liou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Catherine A. Liou wrote 191 Medicare Part D claims in 2024
In 2024, Dr. Liou wrote 191 Medicare Part D claims for 73 patients. 80% of them were for generic drugs. CMS names the drug for 32 of them, across 2 drugs with 11 or more claims each, at $8,558 in total drug cost.
Dr. Liou's Part D claims by kind of drug, 2024
- Generic152 claims80%
- Brand-name and other39 claims20%
Dr. Liou'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. Liou's Part D claims, 2024
- Antibiotics12%22 of 191 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Catherine A. Liou takes part in Medicare
Dr. Liou 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. Catherine A. Liou received $473 in industry payments from 2020 to 2025
CMS Open Payments shows 16 general payments to Dr. Liou from 8 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $214.
General payments to Dr. Liou by program year, 2020 to 2025
Companies that paid Dr. Liou the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Catherine A. Liou'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) |
| 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. Catherine A. Liou
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. Catherine A. Liou's NPI number?
Dr. Catherine A. Liou's NPI number is 1255969762. It was assigned on March 30, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine A. Liou?
Dr. Catherine A. Liou is an internist in Sacramento, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Catherine A. Liou practice?
Dr. Liou practices at 2825 Capitol Avenue, Sacramento, CA 95816. Dr. Liou's primary practice is Sutter Medical Center, Sacramento in Sacramento, California, part of Sutter Health. Dmand AI also links Dr. Liou to 1 group practice or clinic and 1 hospice.
What is Dr. Catherine A. Liou's office phone number?
The practice phone on file for Dr. Liou is (916) 454-2222.
What is Dr. Catherine A. Liou's medical license number?
Dr. Liou holds California license 20A21569.
Which hospitals is Dr. Catherine A. Liou affiliated with?
Dr. Liou practices at Sutter Medical Center, Sacramento in Sacramento, California.
What medical group is Dr. Catherine A. Liou part of?
Dr. Liou is linked to SGMF Radiology.
Does Dr. Catherine A. Liou accept Medicare?
Yes. CMS data shows Dr. Liou billed Medicare for 333 services in 2024, and Dr. Liou accepts Medicare assignment.
How many Medicare patients does Dr. Catherine A. Liou see?
CMS counts 142 Medicare patients who saw Dr. Liou in 2024, with an average age of 74.
What services does Dr. Catherine A. Liou bill to Medicare?
In 2024, Dr. Liou's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
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What drugs does Dr. Catherine A. Liou prescribe most?
In 2024 Medicare Part D data, Dr. Liou's most prescribed drugs by claims were Eliquis and Atorvastatin Calcium.
Has Dr. Catherine A. Liou received payments from drug or device companies?
CMS Open Payments shows $473 in general payments to Dr. Liou from 8 companies from 2020 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Catherine A. Liou been practicing?
Dr. Liou graduated from medical school in 2020, 6 years ago.
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