Alan Chang, M.D.
Endocrinology, Diabetes & Metabolism
Alan Chang is an Endocrinology, Diabetes & Metabolism specialist based in East Setauket, NY with over 17 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Alan Chang, M.D. runs an independent endocrinology, diabetes & metabolism specialist practice in East Setauket, NY. He has been practicing since 2009 — over 17 years. He regularly sees Medicare patients with hypertension, high cholesterol, and diabetes (per CMS claims data). CMS MIPS quality score: 98.52/100 (2023).
At a glance
- Federal MIPS score higher than 72% of MIPS-scored doctors in New York
- Virtual visits available — no app or travel required
Older · 2392dNPPES updated 2019-11-04 · verify NPI on CMS · Verify license at New York State Board for Medicine
Contact & Location
Practice Location
4 Technology Dr Ste 104, East Setauket, NY 11733-4080
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 72% of doctors in New York on federal quality measures.
MIPS Score
202398.52/100
New York avg: 87 · US avg: 83.6
✓ Higher than most doctors nationally(+14.9 pts)
Better than 72% of MIPS-scored doctors in New YorkHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better55.1%
New York avg: 82 · US avg: 82.8
⚠ Lower than most doctors nationally(-27.7 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
459
Unique beneficiaries
Standard volumePrescription Recipients
262
Patients prescribed
Prescriptions Written
1,889
Total claims
Total Medicare drug cost: $1.30M
Percentile rankings compared against 8,064 reporting peers in New York.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Diabetes.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+35%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+18%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-3%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+12%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
Excessive worry or fear that interferes with daily life
US avg: 34.1%↑ More patients than average (+1%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$671 received from industry
7 transactions reported in 2024 ·Moderate tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Alan Chang's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
17 years in practice
Experienced
Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).
Taxonomy: 207RE0101X
Mailing address
Po Box 1559, Stony Brook, NY 11790-0989
Differs from practice location
Virtual Endocrinology, Diabetes & Metabolism Care With Alan Chang
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Alan Chang for blood pressure monitoring, cholesterol management, diabetes check-ins — no travel to East Setauket required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Alan Chang
Dr. Chang is listed as active in the NPI registry with telehealth listed in East Setauket, NY. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (631) 444-0580.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Alan Chang
Practice Location
4 Technology Dr Ste 104, East Setauket, NY 11733-4080
Mailing Address
Po Box 1559, Stony Brook, NY 11790-0989
This is a provider directory. Contact the office directly to schedule appointments.
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