Catherine Liu, MS, PA-C
- Part D claims, 2024
- 20
- Industry payments
- $573
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2009
- Practice address
- 740 Nordahl Rd, San Marcos, CA 92069
- Practice phone
- Call (760) 432-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Concentra Urgent Care
San Marcos, California
Find Catherine Liu'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.
Catherine Liu is a physician assistant in San Marcos, California
Catherine Liu practices at Concentra Urgent Care in San Marcos, California.
Catherine Liu's NPI, 1285960070, was assigned on October 28, 2009. Catherine Liu holds California license PA20306.
- NPI
- 1285960070NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911188446
- NPI enumeration date
- October 28, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 432-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Catherine Liu practices at Concentra Urgent Care in San Marcos, California
Catherine Liu's primary practice is Concentra Urgent Care, at 740 Nordahl Rd, San Marcos, CA 92069 in San Diego County. The practice phone is (760) 432-9000.
- Concentra Urgent Care740 Nordahl Rd, San Marcos, CA 92069 · San Diego CountyPhone(760) 432-9000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Catherine Liu is affiliated with 1 site of care and 1 medical group
Catherine Liu's primary practice is Concentra Urgent Care in San Marcos, California. The medical group on file is Concentra Urgent Care.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Catherine Liu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Catherine Liu practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concentra Urgent Care | Available with a free account |
Source: Dmand AI Technology Install Data
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Catherine Liu is one of 11,482 physician assistants in California
Physician assistant is Catherine Liu's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Catherine Liu is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Catherine Liu
Counts of physician assistants 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
Catherine Liu's patients have a median age of 48
Across all payers, Dmand AI patient panel data puts Catherine Liu's median patient age at 48, with 59% women.
Catherine Liu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women59%
- Men40%
Source: Dmand AI Patient Panel Data
Catherine Liu wrote 20 Medicare Part D claims in 2024
In 2024, Catherine Liu wrote 20 Medicare Part D claims. 85% of them were for generic drugs.
Catherine Liu's Part D claims by kind of drug, 2024
- Generic17 claims85%
- Brand-name and other3 claims15%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Catherine Liu takes part in Medicare
Catherine Liu 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Catherine Liu received $573 in industry payments in 2025
CMS Open Payments shows 7 general payments to Catherine Liu from 6 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Axsome Therapeutics, Inc. paid the most, $140.
Companies that paid Catherine Liu the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Catherine Liu'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 (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 Catherine Liu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Catherine Liu's NPI number?
Catherine Liu's NPI number is 1285960070. It was assigned on October 28, 2009, and it is active in the NPI Registry.
What does Catherine Liu specialize in?
Catherine Liu is a physician assistant in San Marcos, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Catherine Liu practice?
Catherine Liu practices at 740 Nordahl Rd, San Marcos, CA 92069. Catherine Liu's primary practice is Concentra Urgent Care in San Marcos, California.
What is Catherine Liu's office phone number?
The practice phone on file for Catherine Liu is (760) 432-9000.
What is Catherine Liu's medical license number?
Catherine Liu holds California license PA20306.
What medical group is Catherine Liu part of?
Catherine Liu is linked to Concentra Urgent Care.
Does Catherine Liu accept Medicare?
Yes. CMS lists Catherine Liu as accepting Medicare assignment.
Has Catherine Liu received payments from drug or device companies?
CMS Open Payments shows $573 in general payments to Catherine Liu from 6 companies from 2025 to 2025. The largest total came from Axsome Therapeutics, Inc.
How long has Catherine Liu been practicing?
Catherine Liu graduated from medical school in 2008, 18 years ago.
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