Dr. Sandy Chai, MD
- Medicare services, 2024
- 49
- Medicare patients, 2024
- 57
- Part D claims, 2024
- 409
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 526 Main St, Acton, MA 01720
- Practice phone
- Call (508) 306-1400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Coastal Dermatology Inc
Acton, Massachusetts
Find Dr. Chai'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. Sandy Chai is a dermatologist in Acton, Massachusetts
Dr. Chai practices at Coastal Dermatology Inc in Acton, Massachusetts.
Dr. Chai's NPI, 1902035330, was assigned on July 7, 2009. Dr. Chai graduated from Warren Alpert Medical School of Brown University in 2009. Dr. Chai holds Rhode Island license MD14276.
- NPI
- 1902035330NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092932582
- NPI enumeration date
- July 7, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 306-1400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sandy Chai practices at Coastal Dermatology Inc in Acton, Massachusetts
Dr. Chai's primary practice is Coastal Dermatology Inc, at 526 Main St, Acton, MA 01720 in Middlesex County. The practice phone is (508) 306-1400.
- Coastal Dermatology Inc526 Main St, Acton, MA 01720 · Middlesex CountyPhone(508) 306-1400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Sandy Chai is affiliated with 4 sites of care and 2 medical groups
Dr. Chai's primary practice is Coastal Dermatology Inc in Acton, Massachusetts. Dr. Chai is also affiliated with The Miriam Hospital. The medical group on file is Coastal Dermatology. Dmand AI also links Dr. Chai to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Sandy Chai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chai practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Coastal Dermatology Inc | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sandy Chai is one of 562 dermatologists in Massachusetts
Dermatology is Dr. Chai's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dmand AI has Dr. Chai's licenses on file in 2 states: Rhode Island and California.
Specialties and state licenses
- Dermatology, Rhode IslandPrimary
- Internal medicine, California
Dermatologists near Dr. Chai
Counts of dermatologists 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. Sandy Chai billed Medicare for 49 services in 2024
CMS data shows 49 Medicare services from Dr. Chai across 2 procedure codes in 2024, for 57 Medicare patients. Medicare paid $3,159 for them. Every service was in an office.
Dr. Chai's Medicare services by type, 2020 to 2024
- 2020
- 2024
- Office and hospital visits
- 2020: 702024: 2959%
- Surgery
- 2020: 642024: 2069%
Dr. Chai compared with the Massachusetts median for dermatologists, 2024
- Dr. Chai
- Massachusetts median
- Medicare services
- 49vs 1,61097% below
- Medicare patients
- 57vs 48988% below
- Part D claims
- 353vs 347Close to median
Medians across 559 dermatologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Chai'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
Dr. Sandy Chai treated 57 Medicare patients in 2024, average age 77
CMS counts 57 Medicare patients who saw Dr. Chai in 2024. The largest group is 75 to 84, with 27 patients. 74% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chai's median patient age at 47, with 63% women.
Dr. Chai's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chai's Medicare patients by sex, 2024
- Women4375%
- Men1425%
Chronic conditions among Dr. Chai's Medicare patients, 2024
- High cholesterol74%
- High blood pressure58%
- Arthritis51%
- Anxiety42%
- Mood disorders30%
- Atrial fibrillation23%
- Ischemic heart disease23%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sandy Chai wrote 409 Medicare Part D claims in 2024
In 2024, Dr. Chai wrote 409 Medicare Part D claims for 125 patients. 95% of them were for generic drugs. CMS names the drug for 353 of them, across 11 drugs with 11 or more claims each, at $148,454 in total drug cost. In 2023, CMS named 265 claims across 11 drugs.
Dr. Chai's Part D claims by kind of drug, 2024
- Generic388 claims95%
- Brand-name21 claims5%
Dr. Chai'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2652024: 35333%
Drugs named by CMS: 11 in 2024, 11 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. Sandy Chai ranks in the 78th percentile for removal of skin lesions in Medicare
Dr. Chai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 174 procedures of removal of skin lesions by Dr. Chai, more than 78% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chai ranks in Medicare procedure volume
- Removal of skin lesions
- 78th percentile174 procedures
- Skin biopsy
- 71st percentile63 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Sandy Chai has 2 publications on record
Dmand AI links 2 papers to Dr. Chai, published from 2016 to 2020. Dr. Chai's most frequent co-authors are Christopher M. Dimarco, MD and Jalal Maghfour, MD.
Dr. Chai's most frequent co-authors
Recent publications by Dr. Chai
See who Dr. Chai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chai works with, so you can find a warm path to the right dermatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sandy Chai received $36 in industry payments from 2022 to 2024
CMS Open Payments shows 2 general payments to Dr. Chai from 1 drug or device company from 2022 to 2024. Food and beverage make up the largest share, 59% of the total. Pfizer Inc. paid the most, $36.
General payments to Dr. Chai by program year, 2022 to 2024
General payments to Dr. Chai by kind, 2022 to 2024
- Food and beverage$2159%
- Education$1541%
Companies that paid Dr. Chai the most, 2022 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sandy Chai graduated from Warren Alpert Medical School of Brown University
Dr. Chai graduated from Warren Alpert Medical School of Brown University in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Sandy Chai'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 DataDmand 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)Doctors and Clinicians Utilization Data (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) |
| 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. Sandy Chai
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. Sandy Chai's NPI number?
Dr. Sandy Chai's NPI number is 1902035330. It was assigned on July 7, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Sandy Chai?
Dr. Sandy Chai is a dermatologist in Acton, Massachusetts. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Sandy Chai practice?
Dr. Chai practices at 526 Main St, Acton, MA 01720. Dr. Chai's primary practice is Coastal Dermatology Inc in Acton, Massachusetts. Dmand AI also links Dr. Chai to 2 group practices and clinics and 1 medical group.
What is Dr. Sandy Chai's office phone number?
The practice phone on file for Dr. Chai is (508) 306-1400.
What is Dr. Sandy Chai's medical license number?
Dr. Chai holds Rhode Island license MD14276, one of the licenses on file in 2 states.
Which states has Dr. Sandy Chai been licensed in?
Dmand AI has state licenses on file for Dr. Chai in Rhode Island and California.
Which hospitals is Dr. Sandy Chai affiliated with?
Dr. Chai is affiliated with The Miriam Hospital.
What medical group is Dr. Sandy Chai part of?
Dr. Chai is linked to Coastal Dermatology. Dmand AI links Dr. Chai to 1 more medical group.
Does Dr. Sandy Chai accept Medicare?
Yes. CMS data shows Dr. Chai billed Medicare for 49 services in 2024, and Dr. Chai accepts Medicare assignment.
How many Medicare patients does Dr. Sandy Chai see?
CMS counts 57 Medicare patients who saw Dr. Chai in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
What services does Dr. Sandy Chai bill to Medicare?
In 2024, Dr. Chai's most billed Medicare services were office visit, established patient (99213) and surgery: skin and soft tissue (17000).
Where did Dr. Sandy Chai go to medical school?
Dr. Chai graduated from Warren Alpert Medical School of Brown University in 2009.
What drugs does Dr. Sandy Chai prescribe most?
In 2024 Medicare Part D data, Dr. Chai's most prescribed drugs by claims were Ketoconazole, Triamcinolone Acetonide and Clobetasol Propionate.
Has Dr. Sandy Chai received payments from drug or device companies?
CMS Open Payments shows $36 in general payments to Dr. Chai from 1 company from 2022 to 2024. The largest total came from Pfizer Inc.
How long has Dr. Sandy Chai been practicing?
Dr. Chai graduated from medical school in 2009, 17 years ago.
Does Dr. Sandy Chai do research?
Dmand AI links 2 publications to Dr. Chai, published from 2016 to 2020.
Who does Dr. Sandy Chai publish with?
Dr. Chai's most frequent co-authors are Christopher M. Dimarco, MD (1 shared paper) and Jalal Maghfour, MD (1 shared paper).
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