Dr. Donald Mang-Sum Lai, MD
- Medicare services, 2024
- 3,934
- Medicare patients, 2024
- 1,393
- Part D claims, 2024
- 4,474
- Hospital affiliations
- 2
- Industry payments
- $7,070
- Practice address
- 5565 W Las Positas Blvd, Pleasanton, CA 94588
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Stanford Care Digestive Health Center of Pleasanton - HOPD
Acute Care Hospital outpatient department · Pleasanton, California
Find Dr. Lai'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. Donald Mang-Sum Lai is a cardiologist in Pleasanton, California
Dr. Lai practices at Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California.
Dr. Lai's NPI, 1093797557, was assigned on November 18, 2005. Dr. Lai graduated from University of Maryland School of Medicine - Baltimore in 1982. Dr. Lai holds California license G54833.
- NPI
- 1093797557NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698857498
- NPI enumeration date
- November 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Donald Mang-Sum Lai practices at Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California
Dr. Lai's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD, at 5565 W Las Positas Blvd, Pleasanton, CA 94588.
- Stanford Care Digestive Health Center of Pleasanton - HOPD5565 W Las Positas Blvd, Pleasanton, CA 94588
Source: Dmand AI Affiliation Data
Dr. Donald Mang-Sum Lai is affiliated with 5 sites of care and 2 medical groups
Dr. Lai's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California. Dr. Lai is also affiliated with Stanford Health Care Tri-Valley. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Lai to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Donald Mang-Sum Lai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lai practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Care Digestive Health Center of Pleasanton - HOPD | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Donald Mang-Sum Lai is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Lai's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Lai is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Lai's licenses on file in 2 states: California and Maryland.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
- Maryland license
Clinical focus
Dmand AI lists aneurysm, angioplasty, aortic atherosclerois, atrial fibrillation and flutter, cardiac catheterization, cardiomyopathy, chronic hypertension and coronary artery disease among the conditions Dr. Lai treats.
Cardiologists near Dr. Lai
Counts of cardiologists 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. Donald Mang-Sum Lai billed Medicare for 3,934 services in 2024
CMS data shows 3,934 Medicare services from Dr. Lai across 19 procedure codes in 2024, for 1,393 Medicare patients. Medicare paid $210,955 for them.
Dr. Lai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,0082024: 1,9085%
- Office and hospital visits
- 2023: 2,0172024: 1,44029%
- Other services
- 2023: 1182024: 586397%
Where Dr. Lai's Medicare services took place, 2024
- In an office2,54465%
- In a facility1,39035%
Dr. Lai compared with the California median for cardiologists, 2024
- Dr. Lai
- California median
- Medicare services
- 3,934vs 1,5602.5 times
- Medicare patients
- 1,393vs 6442.2 times
- Part D claims
- 4,240vs 1,4103.0 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Lai'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.
Need commercial claims for Dr. Lai?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lai and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Donald Mang-Sum Lai treated 1,393 Medicare patients in 2024, average age 77
CMS counts 1,393 Medicare patients who saw Dr. Lai in 2024. The largest group is 75 to 84, with 535 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.93, 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. Lai's median patient age at 65, with 47% women.
Dr. Lai's Medicare patients by age, 2024
Dr. Lai's Medicare patients by sex, 2024
- Women71952%
- Men67448%
Chronic conditions among Dr. Lai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease46%
- Arthritis45%
- Ischemic heart disease45%
- Diabetes38%
- Atrial fibrillation37%
- Heart failure32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Donald Mang-Sum Lai wrote 4,474 Medicare Part D claims in 2024
In 2024, Dr. Lai wrote 4,474 Medicare Part D claims for 549 patients. 83% of them were for generic drugs. CMS names the drug for 4,240 of them, across 43 drugs with 11 or more claims each, at $968,883 in total drug cost. In 2023, CMS named 4,007 claims across 42 drugs.
Dr. Lai's Part D claims by kind of drug, 2024
- Generic3,726 claims83%
- Brand-name748 claims17%
Dr. Lai'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. Lai's Part D claims, 2024
- Antibiotics0%13 of 4,474 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: 4,0072024: 4,2406%
Drugs named by CMS: 43 in 2024, 42 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. Donald Mang-Sum Lai offers telehealth to Medicare patients
Dr. Lai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lai as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Donald Mang-Sum Lai received $7,070 in industry payments from 2016 to 2025
CMS Open Payments shows 193 general payments to Dr. Lai from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 69% of the total. Abbott Laboratories paid the most, $3,062.
General payments to Dr. Lai by program year, 2016 to 2025
General payments to Dr. Lai by kind, 2016 to 2025
- Food and beverage$4,89669%
- Travel and lodging$1,96028%
- Education$2153%
Companies that paid Dr. Lai the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Donald Mang-Sum Lai has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Lai, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Lai
- 2013
- CMS Stage 1 EHR
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Donald Mang-Sum Lai graduated from University of Maryland School of Medicine - Baltimore
Dr. Lai graduated from University of Maryland School of Medicine - Baltimore in 1982. Dr. Lai is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Donald Mang-Sum Lai accepts plans from 10 insurance carriers
Dr. Lai is in network with 10 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- +2 more carriersWith a free account
Plan types Dr. Lai accepts, by number of carriers
- Medicare8
- PPO7
- HMO5
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Donald Mang-Sum Lai'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 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) |
| 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. Donald Mang-Sum Lai
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. Donald Mang-Sum Lai's NPI number?
Dr. Donald Mang-Sum Lai's NPI number is 1093797557. It was assigned on November 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Donald Mang-Sum Lai?
Dr. Donald Mang-Sum Lai is a cardiologist in Pleasanton, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Donald Mang-Sum Lai practice?
Dr. Lai practices at 5565 W Las Positas Blvd, Pleasanton, CA 94588. Dr. Lai's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California. Dmand AI also links Dr. Lai to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Donald Mang-Sum Lai's medical license number?
Dr. Lai holds California license G54833, one of the licenses on file in 2 states.
Which states has Dr. Donald Mang-Sum Lai been licensed in?
Dmand AI has state licenses on file for Dr. Lai in California (1985 to 2027) and Maryland (1984 to 1988).
Which hospitals is Dr. Donald Mang-Sum Lai affiliated with?
Dr. Lai is affiliated with Stanford Health Care Tri-Valley. Dmand AI links Dr. Lai to 1 more hospital.
What medical group is Dr. Donald Mang-Sum Lai part of?
Dr. Lai is linked to Stanford Health Care. Dmand AI links Dr. Lai to 1 more medical group.
Does Dr. Donald Mang-Sum Lai accept Medicare?
Yes. CMS data shows Dr. Lai billed Medicare for 3,934 services in 2024, and Dr. Lai accepts Medicare assignment.
Does Dr. Donald Mang-Sum Lai offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lai as offering telehealth services.
How many Medicare patients does Dr. Donald Mang-Sum Lai see?
CMS counts 1,393 Medicare patients who saw Dr. Lai in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Donald Mang-Sum Lai board certified?
Yes. Dr. Lai is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Donald Mang-Sum Lai bill to Medicare?
In 2024, Dr. Lai's most billed Medicare services were heart test or procedure (93010), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Donald Mang-Sum Lai go to medical school?
Dr. Lai graduated from University of Maryland School of Medicine - Baltimore in 1982.
What drugs does Dr. Donald Mang-Sum Lai prescribe most?
In 2024 Medicare Part D data, Dr. Lai's most prescribed drugs by claims were Atorvastatin Calcium, Eliquis and Metoprolol Succinate.
Has Dr. Donald Mang-Sum Lai received payments from drug or device companies?
CMS Open Payments shows $7,070 in general payments to Dr. Lai from 36 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Donald Mang-Sum Lai been practicing?
Dr. Lai graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Donald Mang-Sum Lai accept?
Dr. Lai is in network with 10 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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