Dr. May Puiyan Chan, MD
- Medicare services, 2024
- 1,488
- Medicare patients, 2024
- 671
- Hospital affiliations
- 2
- Industry payments
- $19
- Medical group
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Dr. Chan'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. May Puiyan Chan is a pathologist in Ann Arbor, Michigan
Dr. Chan practices at University Hospital in Ann Arbor, Michigan.
Dr. Chan's NPI, 1639318223, was assigned on February 5, 2009. Dr. Chan graduated from State Un of NY, Buffalo School of Dental Medicine in 2007. Dr. Chan holds Michigan license 4301099342.
- NPI
- 1639318223NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557529922
- NPI enumeration date
- February 5, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. May Puiyan Chan practices at University Hospital in Ann Arbor, Michigan
Dr. Chan's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Dr. May Puiyan Chan is affiliated with 3 sites of care and 1 medical group
Dr. Chan's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Chan is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dmand AI also links Dr. Chan to 1 more hospital, named with a free account. Dr. Chan's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. May Puiyan Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. May Puiyan Chan is one of 73 pathologists in Michigan
Anatomic pathology is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. Dmand AI has Dr. Chan's licenses on file in 2 states: Michigan and Massachusetts.
Specialties and state licenses
- Anatomic pathology, MichiganPrimary
- Massachusetts license
Pathologists near Dr. Chan
Counts of pathologists 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. May Puiyan Chan billed Medicare for 1,488 services in 2024
CMS data shows 1,488 Medicare services from Dr. Chan across 10 procedure codes in 2024, for 671 Medicare patients. Medicare paid $46,452 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,1682024: 1,48831%
Dr. Chan compared with the Michigan median for pathologists, 2024
- Dr. Chan
- Michigan median
- Medicare services
- 1,488vs 7202.1 times
- Medicare patients
- 671vs 3092.2 times
Medians across 73 pathologists in Michigan with Dmand AI profiles that report each measure.
Dr. 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chan and other pathologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. May Puiyan Chan treated 671 Medicare patients in 2024, average age 75
CMS counts 671 Medicare patients who saw Dr. Chan in 2024. The largest group is 65 to 74, with 302 patients. 72% of them have high blood pressure, and 69% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 63, with 51% women.
Dr. Chan's Medicare patients by age, 2024
Dr. Chan's Medicare patients by sex, 2024
- Women28242%
- Men38958%
Chronic conditions among Dr. Chan's Medicare patients, 2024
- High blood pressure72%
- High cholesterol69%
- Arthritis42%
- Diabetes28%
- Ischemic heart disease28%
- Chronic kidney disease26%
- Atrial fibrillation23%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 63
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. May Puiyan Chan takes part in Medicare
Dr. Chan 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)
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Dr. May Puiyan Chan received $19 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Chan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $19.
Companies that paid Dr. Chan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. May Puiyan Chan graduated from State Un of NY, Buffalo School of Dental Medicine
Dr. Chan graduated from State Un of NY, Buffalo School of Dental Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. May Puiyan 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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. May Puiyan 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 Dr. May Puiyan Chan's NPI number?
Dr. May Puiyan Chan's NPI number is 1639318223. It was assigned on February 5, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. May Puiyan Chan?
Dr. May Puiyan Chan is a pathologist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does Dr. May Puiyan Chan practice?
Dr. Chan practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Chan's primary practice is University Hospital in Ann Arbor, Michigan. Dmand AI also links Dr. Chan to 1 hospital.
What is Dr. May Puiyan Chan's office phone number?
The practice phone on file for Dr. Chan is (734) 936-4000.
What is Dr. May Puiyan Chan's medical license number?
Dr. Chan holds Michigan license 4301099342, one of the licenses on file in 2 states.
Which states has Dr. May Puiyan Chan been licensed in?
Dmand AI has state licenses on file for Dr. Chan in Michigan and Massachusetts.
Which hospitals is Dr. May Puiyan Chan affiliated with?
Dr. Chan is affiliated with University Hospital. Dmand AI links Dr. Chan to 1 more hospital.
What medical group is Dr. May Puiyan Chan part of?
Dr. Chan is linked to University of Michigan Health.
Does Dr. May Puiyan Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 1,488 services in 2024, and Dr. Chan accepts Medicare assignment.
How many Medicare patients does Dr. May Puiyan Chan see?
CMS counts 671 Medicare patients who saw Dr. Chan in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. May Puiyan Chan bill to Medicare?
In 2024, Dr. Chan's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88321) and lab and pathology test (88341).
Where did Dr. May Puiyan Chan go to medical school?
Dr. Chan graduated from State Un of NY, Buffalo School of Dental Medicine in 2007.
Has Dr. May Puiyan Chan received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Chan from 1 company from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Dr. May Puiyan Chan been practicing?
Dr. Chan graduated from medical school in 2007, 19 years ago.
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