Dr. Ling Xu, MD

  • Castro Valley, CA
  • Internist
NPI1073684429PAC ID1355232620
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
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Personal email
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Mobile number
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Social profiles

Primary practice

University Healthcare Alliance

Castro Valley, California

See all 12 affiliations

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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 and contact details
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
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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 Alliance
    20642 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.

See all 12 affiliations for Dr. Xu

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.

EHR by site
SiteEHR vendor and product
University Healthcare AllianceAvailable with a free account
+9 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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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, CaliforniaPrimaryLicense A69273 · 1999 to 2026 · taxonomy 207R00000X

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.

Medicare services, 20241,496
Medicare patients382
Paid by Medicare$104,235
Procedure codes14

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.

See all procedures by Dr. Xu

Need commercial claims for Dr. Xu?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Xu and other internists in California.

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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.

Medicare patients, 2024382
Average age76
Average risk score1.04
Also on Medicaid16%

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

  1. High blood pressure75%
  2. High cholesterol69%
  3. Arthritis32%
  4. Diabetes31%
  5. Chronic kidney disease24%
  6. Osteoporosis17%
  7. Mood disorders16%
  8. 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.

Part D claims, 20243,405
Drugs named by CMS63
Total drug cost$162,683
Part D patients457

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.

See all prescribing by Dr. Xu

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.

Papers13
Years published2013 to 2021

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 all 13 publications and co-authors

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.

How network discovery works

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

$628in total
  • 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.

See all payments to Dr. Xu

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

  1. 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.

  1. Medical schoolGuangzhou Medical College
  2. Board certified in internal medicineAmerican Board of 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

  1. Medicare7
  2. PPO6
  3. HMO4
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Ling Xu's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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