Dr. Ling Xu, MD
- Medicare services, 2024
- 1,496
- Medicare patients, 2024
- 382
- Part D claims, 2024
- 3,405
- Publications
- 13
- Hospital affiliations
- 3
- Practice address
- 20642 John Dr, Castro Valley, CA 94546
- Practice phone
- Call (510) 974-8297
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Healthcare Alliance
Castro Valley, California
Find Dr. Xu'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. Ling Xu is an internist in Castro Valley, California
Dr. Xu practices at University Healthcare Alliance in Castro Valley, California.
Dr. Xu's NPI, 1073684429, was assigned on November 9, 2006. Dr. Xu graduated from Guangzhou Medical College in 1983. Dr. Xu holds California license A69273.
- NPI
- 1073684429NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355232620
- NPI enumeration date
- November 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 974-8297
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ling Xu practices at University Healthcare Alliance in Castro Valley, California
Dr. Xu's primary practice is University Healthcare Alliance, at 20642 John Dr, Castro Valley, CA 94546 in Alameda County. The practice phone is (510) 974-8297.
- University Healthcare Alliance20642 John Dr, Castro Valley, CA 94546 · Alameda CountyPhone(510) 974-8297
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ling Xu is affiliated with 10 sites of care and 2 medical groups
Dr. Xu's primary practice is University Healthcare Alliance in Castro Valley, California. Dr. Xu is also affiliated with Sutter Eden Medical Center. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Xu to 2 more hospitals, 4 home health agencies, 2 group practices and clinics and 1 medical group, each 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. Ling Xu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Xu practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Healthcare Alliance | Available with a free account |
| +9 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ling Xu is one of 16,751 internists in California
Internal medicine is Dr. Xu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Xu is board certified in internal medicine by the American Board of Internal Medicine. Dr. Xu is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute kidney failure, alzheimer's disease, aneurysm, anxiety, aortic atherosclerois, arthritis and asthma among the conditions Dr. Xu treats.
Internists near Dr. Xu
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. Ling Xu billed Medicare for 1,496 services in 2024
CMS data shows 1,496 Medicare services from Dr. Xu across 14 procedure codes in 2024, for 382 Medicare patients. Medicare paid $104,235 for them. Every service was in an office.
Dr. Xu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 2092024: 660216%
- Office and hospital visits
- 2023: 6132024: 6506%
- Tests and treatments
- 2023: 1592024: 18617%
Dr. Xu compared with the California median for internists, 2024
- Dr. Xu
- California median
- Medicare services
- 1,496vs 3614.1 times
- Medicare patients
- 382vs 1512.5 times
- Part D claims
- 2,776vs 4216.6 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Xu'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ling Xu treated 382 Medicare patients in 2024, average age 76
CMS counts 382 Medicare patients who saw Dr. Xu in 2024. The largest group is 65 to 74, with 164 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Xu's median patient age at 63, with 66% women.
Dr. Xu's Medicare patients by age, 2024
Dr. Xu's Medicare patients by sex, 2024
- Women26269%
- Men12031%
Chronic conditions among Dr. Xu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis32%
- Diabetes31%
- Chronic kidney disease24%
- Osteoporosis17%
- Mood disorders16%
- Cancer15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Xu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women66%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ling Xu wrote 3,405 Medicare Part D claims in 2024
In 2024, Dr. Xu wrote 3,405 Medicare Part D claims for 457 patients. 89% of them were for generic drugs. CMS names the drug for 2,776 of them, across 63 drugs with 11 or more claims each, at $162,683 in total drug cost. In 2023, CMS named 3,261 claims across 65 drugs.
Dr. Xu's Part D claims by kind of drug, 2024
- Generic3,020 claims89%
- Brand-name369 claims11%
- Other16 claims0%
Dr. Xu'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. Xu's Part D claims, 2024
- Antibiotics0%13 of 3,405 claims
- Antipsychotics, patients 65 and over1%21 of 3,405 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: 3,2612024: 2,77615%
Drugs named by CMS: 63 in 2024, 65 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
Dr. Ling Xu offers telehealth to Medicare patients
Dr. Xu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Xu as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ling Xu has 13 publications on record
Dmand AI links 13 papers to Dr. Xu, published from 2013 to 2021. 2013 was the busiest year, with 2. The most frequent topics are China, Caregivers and Rural Population. Dr. Xu has published most often in Aging Ment Health. Dr. Xu's most frequent co-author is Xinqi Dong, MD.
Dr. Xu's papers by year, 2013 to 2021
Topics Dr. Xu writes about most
- China
- Caregivers
- Rural Population
- Depression
- Intergenerational Relations
- Dementia
- Geriatric Assessment
- Health Personnel
Dr. Xu's most frequent co-authors
Recent publications by Dr. Xu
See who Dr. Xu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Xu 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. Ling Xu received $628 in industry payments from 2016 to 2020
CMS Open Payments shows 22 general payments to Dr. Xu from 15 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 98% of the total. St. Jude Medical, Inc. paid the most, $162.
General payments to Dr. Xu by program year, 2016 to 2020
General payments to Dr. Xu by kind, 2016 to 2020
- Food and beverage$61898%
- Education$102%
Companies that paid Dr. Xu the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ling Xu has 1 award and honors on record
Dmand AI lists 1 award for Dr. Xu, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Xu
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Ling Xu graduated from Guangzhou Medical College
Dr. Xu graduated from Guangzhou Medical College in 1983.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ling Xu accepts plans from 9 insurance carriers
Dr. Xu is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- +1 more carriersWith a free account
Plan types Dr. Xu accepts, by number of carriers
- Medicare7
- PPO6
- HMO4
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ling Xu'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Ling Xu
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. Ling Xu's NPI number?
Dr. Ling Xu's NPI number is 1073684429. It was assigned on November 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ling Xu?
Dr. Ling Xu is an internist in Castro Valley, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ling Xu practice?
Dr. Xu practices at 20642 John Dr, Castro Valley, CA 94546. Dr. Xu's primary practice is University Healthcare Alliance in Castro Valley, California. Dmand AI also links Dr. Xu to 2 hospitals, 4 home health agencies, 2 group practices and clinics and 1 medical group.
What is Dr. Ling Xu's office phone number?
The practice phone on file for Dr. Xu is (510) 974-8297.
What is Dr. Ling Xu's medical license number?
Dr. Xu holds California license A69273.
Which hospitals is Dr. Ling Xu affiliated with?
Dr. Xu is affiliated with Sutter Eden Medical Center. Dmand AI links Dr. Xu to 2 more hospitals.
What medical group is Dr. Ling Xu part of?
Dr. Xu is linked to Stanford Health Care. Dmand AI links Dr. Xu to 1 more medical group.
Does Dr. Ling Xu accept Medicare?
Yes. CMS data shows Dr. Xu billed Medicare for 1,496 services in 2024, and Dr. Xu accepts Medicare assignment.
Does Dr. Ling Xu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Xu as offering telehealth services.
How many Medicare patients does Dr. Ling Xu see?
CMS counts 382 Medicare patients who saw Dr. Xu in 2024, with an average age of 76.
Show 9 more questionsShow fewer questions
Is Dr. Ling Xu board certified?
Yes. Dr. Xu is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Ling Xu bill to Medicare?
In 2024, Dr. Xu's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Ling Xu go to medical school?
Dr. Xu graduated from Guangzhou Medical College in 1983.
What drugs does Dr. Ling Xu prescribe most?
In 2024 Medicare Part D data, Dr. Xu's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Ling Xu received payments from drug or device companies?
CMS Open Payments shows $628 in general payments to Dr. Xu from 15 companies from 2016 to 2020. The largest total came from St. Jude Medical, Inc.
How long has Dr. Ling Xu been practicing?
Dr. Xu graduated from medical school in 1983, 43 years ago.
Does Dr. Ling Xu do research?
Dmand AI links 13 publications to Dr. Xu, published from 2013 to 2021.
Who does Dr. Ling Xu publish with?
Dr. Xu's most frequent co-authors are Xinqi Dong, MD (1 shared paper).
What insurance does Dr. Ling Xu accept?
Dr. Xu is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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