Academic Medical CentersBiasCooperative Behavior
Dr. Samuel Chan, MD
NPI1972538841
- Medicare services, 2022
- 1,774
- Part D claims, 2023
- 1,030
- Publications
- 48
- Industry payments
- $92
- State license
- 1
- Practice address
- 16505 Virginia Ave, Williamsport, MD 21795
- Practice phone
- Call (301) 582-1628
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Homewood Living Williamsport, Inc.
Williamsport, Maryland
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Dr. Samuel Chan is an internist in Williamsport, Maryland
Dr. Chan practices at Homewood Living Williamsport, Inc. in Williamsport, Maryland.
Dr. Chan's NPI, 1972538841, was assigned on July 11, 2006. Dr. Chan holds Maryland license D36655.
NPI and contact details
- NPI
- 1972538841NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Practice phone
- (301) 582-1628
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Samuel Chan practices at Homewood Living Williamsport, Inc. in Williamsport, Maryland
Dr. Chan's primary practice is Homewood Living Williamsport, Inc., at 16505 Virginia Ave, Williamsport, MD 21795 in Washington County. The practice phone is (301) 582-1628.
- Homewood Living Williamsport, Inc.16505 Virginia Ave, Williamsport, MD 21795 · Washington CountyPhone(301) 582-1628
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Samuel Chan is affiliated with 1 site of care
Dr. Chan's primary practice is Homewood Living Williamsport, Inc. in Williamsport, Maryland.
Homewood Living Williamsport, Inc.Primary
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Samuel Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Homewood Living Williamsport, Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Samuel Chan is one of 3,320 internists in Maryland
Internal medicine is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chan is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Chan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
3,320internists in Maryland
4internists in Williamsport
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Samuel Chan billed Medicare for 1,774 services in 2022
CMS data shows 1,774 Medicare services from Dr. Chan across 9 procedure codes in 2022. Medicare paid $127,491 for them. Every service was in an office.
Medicare services, 20221,774
Paid by Medicare$127,491
Procedure codes9
Dr. Chan's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1,3912022: 1,3007%
- Other services
- 2021: 3992022: 30723%
- Tests and treatments
- 2021: 2222022: 16725%
Dr. Chan compared with the Maryland median for internists, 2022
- Dr. Chan
- Maryland median
- Medicare services
- 1,774vs 6562.7 times
- Part D claims
- 1,030vs 3093.3 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Chan's most billed Medicare procedure codes, 2022
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. Chan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chan and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel Chan's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 72, with 50% women.
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 72
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Samuel Chan wrote 1,030 Medicare Part D claims in 2023
In 2023, Dr. Chan wrote 1,030 Medicare Part D claims. They cover 25 drugs, with $19,347 in total drug cost. In 2022, CMS named 6,654 claims across 105 drugs.
Part D claims, 20231,030
Drugs named by CMS25
Total drug cost$19,347
Dr. Chan's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 6,6542023: 1,03085%
Drugs named by CMS: 25 in 2023, 105 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Samuel Chan has 48 publications on record
Dmand AI links 48 papers to Dr. Chan, published from 2010 to 2023. 2014 was the busiest year, with 4. The most frequent topics are Rats, Sprague-Dawley, Brain Stem and Oxidative Stress. Dr. Chan has published most often in J Biomed Sci.
Papers48
Years published2010 to 2023
Dr. Chan's papers by year, 2014 to 2023
Topics Dr. Chan writes about most
- Rats, Sprague-Dawley
- Brain Stem
- Oxidative Stress
- Baroreflex
- Hypertension
- Medulla Oblongata
- Blood Pressure
- Reactive Oxygen Species
Recent publications by Dr. Chan
Hepatic EncephalopathyLiver Failure, AcuteMembrane Potential, Mitochondrial
BaroreflexBlood PressureHeart Rate
See who Dr. Chan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chan 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. Samuel Chan received $92 in industry payments from 2016 to 2022
CMS Open Payments shows 6 general payments to Dr. Chan from 4 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $34.
General payments to Dr. Chan by program year, 2016 to 2022
Companies that paid Dr. Chan the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Samuel 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 | 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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| 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. Samuel 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. Samuel Chan's NPI number?
Dr. Samuel Chan's NPI number is 1972538841. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel Chan?
Dr. Samuel Chan is an internist in Williamsport, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Samuel Chan practice?
Dr. Chan practices at 16505 Virginia Ave, Williamsport, MD 21795. Dr. Chan's primary practice is Homewood Living Williamsport, Inc. in Williamsport, Maryland.
What is Dr. Samuel Chan's office phone number?
The practice phone on file for Dr. Chan is (301) 582-1628.
What is Dr. Samuel Chan's medical license number?
Dr. Chan holds Maryland license D36655.
Does Dr. Samuel Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 1,774 services in 2022.
What services does Dr. Samuel Chan bill to Medicare?
In 2022, Dr. Chan's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. Samuel Chan prescribe most?
In 2023 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Hydrochlorothiazide.
Has Dr. Samuel Chan received payments from drug or device companies?
CMS Open Payments shows $92 in general payments to Dr. Chan from 4 companies from 2016 to 2022. The largest total came from Abbott Laboratories.
How long has Dr. Samuel Chan been practicing?
Dr. Chan graduated from medical school in 1984, 42 years ago.
Does Dr. Samuel Chan do research?
Dmand AI links 48 publications to Dr. Chan, published from 2010 to 2023.
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