Head Neck Tumor Segm MR Guid Appl (2024)
Dr. Eric Chongze Ma, MD
- Medicare services, 2024
- 1,783
- Medicare patients, 2024
- 392
- Part D claims, 2024
- 1,408
- Publications
- 5
- Hospital affiliations
- 1
- Practice address
- 100 Reserve Rd, Danbury, CT 06810
- Practice phone
- Call (203) 739-7742
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nuvance Health Medical Practice CT, Inc.
Danbury, Connecticut
Find Dr. Ma'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. Eric Chongze Ma is a hematologist and oncologist in Danbury, Connecticut
Dr. Ma practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut.
Dr. Ma's NPI, 1205078862, was assigned on March 29, 2009. Dr. Ma holds Connecticut license 61788.
- NPI
- 1205078862NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244452803
- NPI enumeration date
- March 29, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 739-7742
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eric Chongze Ma practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut
Dr. Ma's primary practice is Nuvance Health Medical Practice CT, Inc., at 100 Reserve Rd, Danbury, CT 06810 in Western Ct County. The practice phone is (203) 739-7742.
- Nuvance Health Medical Practice CT, Inc.100 Reserve Rd, Danbury, CT 06810 · Western Ct CountyPhone(203) 739-7742
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Eric Chongze Ma is affiliated with 3 sites of care and 1 medical group
Dr. Ma's primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dr. Ma is also affiliated with Northwell Danbury Hospital. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. Ma to 1 more hospice, 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. Eric Chongze Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ma practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nuvance Health Medical Practice CT, Inc. | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Eric Chongze Ma is one of 175 hematologists and oncologists in Connecticut
Hematology and oncology is Dr. Ma's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Ma is licensed in Connecticut.
Specialties and state licenses
- Hematology and oncology, ConnecticutPrimary
Hematologists and oncologists near Dr. Ma
Counts of hematologists and oncologists 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. Eric Chongze Ma billed Medicare for 1,783 services in 2024
CMS data shows 1,783 Medicare services from Dr. Ma across 10 procedure codes in 2024, for 392 Medicare patients. Medicare paid $124,560 for them.
Dr. Ma's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3362024: 1,12616%
- Lab and pathology
- 2023: 6472024: 47327%
- Surgery
- 2023: 3022024: 18439%
Where Dr. Ma's Medicare services took place, 2024
- In an office1,65693%
- In a facility1277%
Dr. Ma compared with the Connecticut median for hematologists and oncologists, 2024
- Dr. Ma
- Connecticut median
- Medicare services
- 1,783vs 5413.3 times
- Medicare patients
- 392vs 20888% above
- Part D claims
- 1,128vs 4512.5 times
Medians across 168 hematologists and oncologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Ma'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.
Need commercial claims for Dr. Ma?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ma and other hematologists and oncologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eric Chongze Ma treated 392 Medicare patients in 2024, average age 76
CMS counts 392 Medicare patients who saw Dr. Ma in 2024. The largest group is 75 to 84, with 152 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.14, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ma's median patient age at 74, with 40% women.
Dr. Ma's Medicare patients by age, 2024
Dr. Ma's Medicare patients by sex, 2024
- Women16241%
- Men23059%
Chronic conditions among Dr. Ma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Cancer39%
- Ischemic heart disease38%
- Chronic kidney disease37%
- Anxiety32%
- Diabetes30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ma's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women40%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Eric Chongze Ma wrote 1,408 Medicare Part D claims in 2024
In 2024, Dr. Ma wrote 1,408 Medicare Part D claims for 253 patients. 67% of them were for generic drugs. CMS names the drug for 1,128 of them, across 34 drugs with 11 or more claims each, at $4,254,380 in total drug cost. In 2023, CMS named 1,097 claims across 30 drugs.
Dr. Ma's Part D claims by kind of drug, 2024
- Generic938 claims67%
- Brand-name and other470 claims33%
Dr. Ma'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. Ma's Part D claims, 2024
- Opioids6%79 of 1,408 claims
- Antibiotics2%30 of 1,408 claims
- Antipsychotics, patients 65 and over2%26 of 1,408 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: 1,0972024: 1,1283%
Drugs named by CMS: 34 in 2024, 30 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. Eric Chongze Ma offers telehealth to Medicare patients
Dr. Ma accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ma as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Eric Chongze Ma has 5 publications on record
Dmand AI links 5 papers to Dr. Ma, published from 2022 to 2025. 2023 was the busiest year, with 3. The most frequent topics are CD47 Antigen, Diet, High-Fat and Liver. Dr. Ma has published most often in Cureus. Dr. Ma's most frequent co-authors are Nisha Nepal, MD, Prabasha Ranmini Weeraddana, MD and Mehndi Dandwani, MD.
Dr. Ma's papers by year, 2022 to 2025
Topics Dr. Ma writes about most
- CD47 Antigen
- Diet, High-Fat
- Liver
- Mice, Inbred C57BL
Dr. Ma's most frequent co-authors
- Nisha Nepal, MD2 shared papers
- Prabasha Ranmini Weeraddana, MD2 shared papers
- Mehndi Dandwani, MD1 shared paper
Recent publications by Dr. Ma
See who Dr. Ma researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ma works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eric Chongze Ma received $11,429 in industry payments from 2017 to 2025
CMS Open Payments shows 404 general payments to Dr. Ma from 46 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 74% of the total. Deciphera Pharmaceuticals Inc. paid the most, $2,662.
General payments to Dr. Ma by program year, 2017 to 2025
General payments to Dr. Ma by kind, 2017 to 2025
- Food and beverage$8,41474%
- Honoraria$1,65014%
- Travel and lodging$8628%
- Education$5034%
Companies that paid Dr. Ma the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Eric Chongze Ma'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) |
| 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. Eric Chongze Ma
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. Eric Chongze Ma's NPI number?
Dr. Eric Chongze Ma's NPI number is 1205078862. It was assigned on March 29, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Chongze Ma?
Dr. Eric Chongze Ma is a hematologist and oncologist in Danbury, Connecticut. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Eric Chongze Ma practice?
Dr. Ma practices at 100 Reserve Rd, Danbury, CT 06810. Dr. Ma's primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dmand AI also links Dr. Ma to 1 hospice.
What is Dr. Eric Chongze Ma's office phone number?
The practice phone on file for Dr. Ma is (203) 739-7742.
What is Dr. Eric Chongze Ma's medical license number?
Dr. Ma holds Connecticut license 61788.
Which hospitals is Dr. Eric Chongze Ma affiliated with?
Dr. Ma is affiliated with Northwell Danbury Hospital.
What medical group is Dr. Eric Chongze Ma part of?
Dr. Ma is linked to Danbury Medical Group.
Does Dr. Eric Chongze Ma accept Medicare?
Yes. CMS data shows Dr. Ma billed Medicare for 1,783 services in 2024, and Dr. Ma accepts Medicare assignment.
Does Dr. Eric Chongze Ma offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ma as offering telehealth services.
How many Medicare patients does Dr. Eric Chongze Ma see?
CMS counts 392 Medicare patients who saw Dr. Ma in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
What services does Dr. Eric Chongze Ma bill to Medicare?
In 2024, Dr. Ma's most billed Medicare services were office visit, established patient (99214), lab and pathology test (85025) and surgery: heart and blood vessels (36415).
What drugs does Dr. Eric Chongze Ma prescribe most?
In 2024 Medicare Part D data, Dr. Ma's most prescribed drugs by claims were Revlimid, Ondansetron HCl and Acyclovir.
Has Dr. Eric Chongze Ma received payments from drug or device companies?
CMS Open Payments shows $11,429 in general payments to Dr. Ma from 46 companies from 2017 to 2025. The largest total came from Deciphera Pharmaceuticals Inc.
How long has Dr. Eric Chongze Ma been practicing?
Dr. Ma graduated from medical school in 1998, 28 years ago.
Does Dr. Eric Chongze Ma do research?
Dmand AI links 5 publications to Dr. Ma, published from 2022 to 2025.
Who does Dr. Eric Chongze Ma publish with?
Dr. Ma's most frequent co-authors are Nisha Nepal, MD (2 shared papers), Prabasha Ranmini Weeraddana, MD (2 shared papers) and Mehndi Dandwani, MD (1 shared paper).
Selling to hematology and oncology practices?
See hematologists and oncologists in Connecticut by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card