Dr. Daniel Chang, MD
- Medicare services, 2024
- 196
- Medicare patients, 2024
- 322
- Part D claims, 2024
- 100
- Hospital affiliations
- 4
- Industry payments
- $1,891
- Practice address
- 271 Carew St, Springfield, MA 01104
- Practice phone
- Call (413) 748-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Medical Center (MA)
Springfield, Massachusetts
Find Dr. Chang'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. Daniel Chang is a pain medicine (anesthesiology) physician in Springfield, Massachusetts
Dr. Chang practices at Mercy Medical Center (MA) in Springfield, Massachusetts.
Dr. Chang's NPI, 1659790970, was assigned on April 15, 2014. Dr. Chang graduated from State University of New York Downstate Medical Center in 2014. Dr. Chang holds Connecticut license 63725.
- NPI
- 1659790970NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234459470
- NPI enumeration date
- April 15, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (413) 748-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Chang practices at Mercy Medical Center (MA) in Springfield, Massachusetts
Dr. Chang's primary practice is Mercy Medical Center (MA), at 271 Carew St, Springfield, MA 01104 in Hampden County. The practice phone is (413) 748-9000.
- Mercy Medical Center (MA)271 Carew St, Springfield, MA 01104 · Hampden CountyPhone(413) 748-9000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daniel Chang is affiliated with 5 sites of care and 2 medical groups
Dr. Chang's primary practice is Mercy Medical Center (MA) in Springfield, Massachusetts. Dr. Chang is also affiliated with Baystate Medical Center. The medical group on file is Baystate Medical Practices. Dmand AI also links Dr. Chang to 3 more hospitals and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Medical Center (MA) | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel Chang is one of 102 pain medicine (anesthesiology) physicians in Massachusetts
Pain medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207LP2900X. Dr. Chang is licensed in Connecticut.
Specialties and state licenses
- Pain medicine (anesthesiology), ConnecticutPrimary
Pain medicine (anesthesiology) physicians near Dr. Chang
Counts of pain medicine (anesthesiology) physicians 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. Daniel Chang billed Medicare for 196 services in 2024
CMS data shows 196 Medicare services from Dr. Chang across 5 procedure codes in 2024, for 322 Medicare patients. Medicare paid $10,456 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1152024: 19670%
Dr. Chang compared with the Massachusetts median for pain medicine (anesthesiology) physicians, 2024
- Dr. Chang
- Massachusetts median
- Medicare services
- 196vs 56065% below
- Medicare patients
- 322vs 333Close to median
- Part D claims
- 26vs 11076% below
Medians across 95 pain medicine (anesthesiology) physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Chang'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. Daniel Chang treated 322 Medicare patients in 2024, average age 72
CMS counts 322 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 162 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 62, with 48% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women15849%
- Men16451%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Anxiety28%
- Diabetes26%
- Mood disorders26%
- Chronic kidney disease25%
- Ischemic heart disease25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Chang wrote 100 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 100 Medicare Part D claims for 19 patients. 88% of them were for generic drugs. CMS names the drug for 26 of them, across 2 drugs with 11 or more claims each, at $12,354 in total drug cost. In 2023, CMS named 122 claims across 6 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic88 claims88%
- Brand-name12 claims12%
Dr. Chang'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 Dr. Chang's Part D claims, 2024
- Opioids33%33 of 100 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1222024: 2679%
Drugs named by CMS: 2 in 2024, 6 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
How Dr. Daniel Chang takes part in Medicare
Dr. Chang 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. Daniel Chang received $1,891 in industry payments from 2019 to 2025
CMS Open Payments shows 64 general payments to Dr. Chang from 22 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Nevro Corp. paid the most, $322.
General payments to Dr. Chang by program year, 2019 to 2025
Companies that paid Dr. Chang the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel Chang graduated from State University of New York Downstate Medical Center
Dr. Chang graduated from State University of New York Downstate Medical Center in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Chang'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 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) |
| 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. Daniel Chang
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. Daniel Chang's NPI number?
Dr. Daniel Chang's NPI number is 1659790970. It was assigned on April 15, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Chang?
Dr. Daniel Chang is a pain medicine (anesthesiology) physician in Springfield, Massachusetts. The primary specialty in the NPI Registry is Pain Medicine (Anesthesiology) Physician (taxonomy code 207LP2900X).
Where does Dr. Daniel Chang practice?
Dr. Chang practices at 271 Carew St, Springfield, MA 01104. Dr. Chang's primary practice is Mercy Medical Center (MA) in Springfield, Massachusetts. Dmand AI also links Dr. Chang to 3 hospitals and 1 medical group.
What is Dr. Daniel Chang's office phone number?
The practice phone on file for Dr. Chang is (413) 748-9000.
What is Dr. Daniel Chang's medical license number?
Dr. Chang holds Connecticut license 63725.
Which hospitals is Dr. Daniel Chang affiliated with?
Dr. Chang is affiliated with Baystate Medical Center. Dmand AI links Dr. Chang to 3 more hospitals.
What medical group is Dr. Daniel Chang part of?
Dr. Chang is linked to Baystate Medical Practices. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Daniel Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 196 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Daniel Chang see?
CMS counts 322 Medicare patients who saw Dr. Chang in 2024, with an average age of 72.
What services does Dr. Daniel Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were anesthesia (00811), anesthesia (00812) and anesthesia (00731).
Show 4 more questionsShow fewer questions
Where did Dr. Daniel Chang go to medical school?
Dr. Chang graduated from State University of New York Downstate Medical Center in 2014.
What drugs does Dr. Daniel Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Meloxicam and Belbuca.
Has Dr. Daniel Chang received payments from drug or device companies?
CMS Open Payments shows $1,891 in general payments to Dr. Chang from 22 companies from 2019 to 2025. The largest total came from Nevro Corp.
How long has Dr. Daniel Chang been practicing?
Dr. Chang graduated from medical school in 2014, 12 years ago.
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