Mark A. Chan
- Medicare services, 2024
- 208
- Medicare patients, 2024
- 225
- Part D claims, 2024
- 231
- MIPS score, 2024
- 95
- Hospital affiliations
- 2
- Practice address
- 5555 West Las Positas Boulevard, Pleasanton, CA 94588
- Practice phone
- Call (925) 847-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mark Chan's professional email, personal email and mobile number
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Mark A. Chan is a physician assistant in Pleasanton, California
Mark Chan practices at Stanford Health Care Tri-Valley in Pleasanton, California, part of Stanford University.
Mark Chan's NPI, 1740639442, was assigned on June 3, 2016. Mark Chan holds California license 53443.
- NPI
- 1740639442NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951695840
- NPI enumeration date
- June 3, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 847-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark A. Chan practices at Stanford Health Care Tri-Valley in Pleasanton, California
Mark Chan's primary practice is Stanford Health Care Tri-Valley, at 5555 West Las Positas Boulevard, Pleasanton, CA 94588 in Alameda County. The practice phone is (925) 847-3000.
- Stanford Health Care Tri-Valley5555 West Las Positas Boulevard, Pleasanton, CA 94588 · Alameda CountyPhone(925) 847-3000
Source: Dmand AI Affiliation Data
Mark A. Chan is affiliated with 2 sites of care and 3 medical groups
Mark Chan's primary practice is Stanford Health Care Tri-Valley in Pleasanton, California, part of Stanford University. Mark Chan is also affiliated with St. Rose Hospital. The medical group on file is Pleasanton Emergency Medical Group. Dmand AI also links Mark Chan to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark A. Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Chan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Health Care Tri-Valley | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark A. Chan is one of 2,381 physician assistants in California
Medical is Mark Chan's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Mark Chan is licensed in California.
Specialties and state licenses
- Medical physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists facial skin infection, hives, lower back pain, minor injury on trunk, muscle pain, fibromyalgia, and limb pain, rash, swimmer's ear and upper respiratory infection (URI) among the conditions Mark Chan treats.
Physician assistants near Mark Chan
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
Mark A. Chan billed Medicare for 208 services in 2024
CMS data shows 208 Medicare services from Mark Chan across 4 procedure codes in 2024, for 225 Medicare patients. Medicare paid $18,116 for them.
Where Mark Chan's Medicare services took place, 2024
- In an office3617%
- In a facility17283%
Mark Chan compared with the California median for physician assistants, 2024
- Mark Chan
- California median
- Medicare services
- 208vs 27825% below
- Medicare patients
- 225vs 11694% above
- Part D claims
- 73vs 44083% below
Medians across 1,473 physician assistants in California with Dmand AI profiles that report each measure.
Mark Chan'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
Mark A. Chan treated 225 Medicare patients in 2024, average age 69
CMS counts 225 Medicare patients who saw Mark Chan in 2024. The largest group is 65 to 74, with 87 patients. 72% of them have high blood pressure, and 67% have high cholesterol. 65% are also on Medicaid. Their average risk score is 1.68, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mark Chan's median patient age at 43, with 57% women.
Mark Chan's Medicare patients by age, 2024
Mark Chan's Medicare patients by sex, 2024
- Women13058%
- Men9542%
Chronic conditions among Mark Chan's Medicare patients, 2024
- High blood pressure72%
- High cholesterol67%
- Arthritis46%
- Diabetes38%
- Mood disorders32%
- Depression30%
- Anxiety29%
- Chronic kidney disease27%
Share of Medicare patients with each condition. A patient can have several.
Mark Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women57%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark A. Chan wrote 231 Medicare Part D claims in 2024
In 2024, Mark Chan wrote 231 Medicare Part D claims for 164 patients. 91% of them were for generic drugs. CMS names the drug for 73 of them, across 4 drugs with 11 or more claims each, at $352 in total drug cost.
Mark Chan's Part D claims by kind of drug, 2024
- Generic210 claims91%
- Brand-name and other21 claims9%
Mark Chan'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 Mark Chan's Part D claims, 2024
- Opioids9%21 of 231 claims
- Antibiotics31%71 of 231 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
Mark A. Chan scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Mark Chan for performance year 2024, reported as part of a group. Mark Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mark Chan's MIPS scores, performance year 2024
- 95of 100Final score
- 86.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Sources for Mark A. Chan'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)Clinician Public Reporting: Overall MIPS Performance (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 Mark A. Chan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark A. Chan's NPI number?
Mark A. Chan's NPI number is 1740639442. It was assigned on June 3, 2016, and it is active in the NPI Registry.
What does Mark A. Chan specialize in?
Mark A. Chan is a physician assistant in Pleasanton, California. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Mark A. Chan practice?
Mark Chan practices at 5555 West Las Positas Boulevard, Pleasanton, CA 94588. Mark Chan's primary practice is Stanford Health Care Tri-Valley in Pleasanton, California, part of Stanford University. Dmand AI also links Mark Chan to 2 medical groups.
What is Mark A. Chan's office phone number?
The practice phone on file for Mark Chan is (925) 847-3000.
What is Mark A. Chan's medical license number?
Mark Chan holds California license 53443.
Which hospitals is Mark A. Chan affiliated with?
Mark Chan practices at Stanford Health Care Tri-Valley in Pleasanton, California. Mark Chan is also affiliated with St. Rose Hospital.
What medical group is Mark A. Chan part of?
Mark Chan is linked to Pleasanton Emergency Medical Group. Dmand AI links Mark Chan to 2 more medical groups.
Does Mark A. Chan accept Medicare?
Yes. CMS data shows Mark Chan billed Medicare for 208 services in 2024, and Mark Chan accepts Medicare assignment.
What is Mark A. Chan's MIPS score?
Mark Chan's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.
How many Medicare patients does Mark A. Chan see?
CMS counts 225 Medicare patients who saw Mark Chan in 2024, with an average age of 69.
Show 3 more questionsShow fewer questions
What services does Mark A. Chan bill to Medicare?
In 2024, Mark Chan's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
What drugs does Mark A. Chan prescribe most?
In 2024 Medicare Part D data, Mark Chan's most prescribed drugs by claims were Ibuprofen, Hydrocodone-Acetaminophen and Doxycycline Monohydrate.
How long has Mark A. Chan been practicing?
Mark Chan graduated from medical school in 2016, 10 years ago.
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