Dr. David H. Ma, MD
- Medicare services, 2024
- 40
- Medicare patients, 2024
- 52
- Part D claims, 2024
- 67
- MIPS score, 2024
- 57
- Hospital affiliations
- 4
- Practice address
- 1 General St, Lawrence, MA 01841
- Practice phone
- Call (978) 683-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Merrimack Health Lawrence Hospital
Lawrence, Massachusetts
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. David H. Ma is a general surgeon in Lawrence, Massachusetts
Dr. Ma practices at Merrimack Health Lawrence Hospital in Lawrence, Massachusetts.
Dr. Ma's NPI, 1659722312, was assigned on June 23, 2016. Dr. Ma graduated from University of Massachusetts Medical School in 2016. Dr. Ma holds Massachusetts license 268390.
- NPI
- 1659722312NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527321959
- NPI enumeration date
- June 23, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 683-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David H. Ma practices at Merrimack Health Lawrence Hospital in Lawrence, Massachusetts
Dr. Ma's primary practice is Merrimack Health Lawrence Hospital, at 1 General St, Lawrence, MA 01841 in Essex County. The practice phone is (978) 683-4000.
- Merrimack Health Lawrence Hospital1 General St, Lawrence, MA 01841 · Essex CountyPhone(978) 683-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David H. Ma is affiliated with 6 sites of care and 3 medical groups
Dr. Ma's primary practice is Merrimack Health Lawrence Hospital in Lawrence, Massachusetts. Dr. Ma is also affiliated with Merrimack Health Lawrence Hospital. The medical group on file is Merrimack Health Community Medical Associates (CMA). Dmand AI also links Dr. Ma to 3 more hospitals, 2 medical groups and 1 group practice or clinic, 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. David H. Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ma practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Merrimack Health Lawrence Hospital | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David H. Ma is one of 732 general surgeons in Massachusetts
Surgery is Dr. Ma's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Ma is licensed in Massachusetts.
Specialties and state licenses
- Surgery, MassachusettsPrimary
General surgeons near Dr. Ma
Counts of general surgeons 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. David H. Ma billed Medicare for 40 services in 2024
CMS data shows 40 Medicare services from Dr. Ma across 2 procedure codes in 2024, for 52 Medicare patients. Medicare paid $3,280 for them.
Where Dr. Ma's Medicare services took place, 2024
- In an office1128%
- In a facility2973%
Dr. Ma compared with the Massachusetts median for general surgeons, 2024
- Dr. Ma
- Massachusetts median
- Medicare services
- 40vs 20080% below
- Medicare patients
- 52vs 15266% below
- Part D claims
- 44vs 222.0 times
Medians across 688 general surgeons in Massachusetts 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ma and other general surgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David H. Ma treated 52 Medicare patients in 2024, average age 74
CMS counts 52 Medicare patients who saw Dr. Ma in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 38% are also on Medicaid. Their average risk score is 1.70, 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 69, with 53% women.
Dr. Ma's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ma's Medicare patients by sex, 2024
- Women2344%
- Men2956%
Chronic conditions among Dr. Ma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Anxiety40%
- Arthritis40%
- Diabetes37%
- Ischemic heart disease33%
- Depression31%
- Mood disorders31%
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 69
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David H. Ma wrote 67 Medicare Part D claims in 2024
In 2024, Dr. Ma wrote 67 Medicare Part D claims for 32 patients. 91% of them were for generic drugs. CMS names the drug for 44 of them, across 2 drugs with 11 or more claims each, at $197 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Dr. Ma's Part D claims by kind of drug, 2024
- Generic61 claims91%
- Brand-name and other6 claims9%
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
- Opioids42%28 of 67 claims
- Antibiotics19%13 of 67 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: 132024: 44238%
Drugs named by CMS: 2 in 2024, 1 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. David H. Ma scored 57 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 57 out of 100 for Dr. Ma for performance year 2024, reported through an alternative payment model (APM). Dr. Ma accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ma's MIPS scores, performance year 2024
- 57of 100Final score
- 59.3of 100Quality
- 0of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. David H. Ma received $236 in industry payments from 2016 to 2025
CMS Open Payments shows 5 general payments to Dr. Ma from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $148.
General payments to Dr. Ma by program year, 2016 to 2025
Companies that paid Dr. Ma the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David H. Ma graduated from University of Massachusetts Medical School
Dr. Ma graduated from University of Massachusetts Medical School in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David H. 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. David H. 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. David H. Ma's NPI number?
Dr. David H. Ma's NPI number is 1659722312. It was assigned on June 23, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. David H. Ma?
Dr. David H. Ma is a general surgeon in Lawrence, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. David H. Ma practice?
Dr. Ma practices at 1 General St, Lawrence, MA 01841. Dr. Ma's primary practice is Merrimack Health Lawrence Hospital in Lawrence, Massachusetts. Dmand AI also links Dr. Ma to 3 hospitals, 2 medical groups and 1 group practice or clinic.
What is Dr. David H. Ma's office phone number?
The practice phone on file for Dr. Ma is (978) 683-4000.
What is Dr. David H. Ma's medical license number?
Dr. Ma holds Massachusetts license 268390.
Which hospitals is Dr. David H. Ma affiliated with?
Dr. Ma is affiliated with Merrimack Health Lawrence Hospital. Dmand AI links Dr. Ma to 3 more hospitals.
What medical group is Dr. David H. Ma part of?
Dr. Ma is linked to Merrimack Health Community Medical Associates (CMA). Dmand AI links Dr. Ma to 2 more medical groups.
Does Dr. David H. Ma accept Medicare?
Yes. CMS data shows Dr. Ma billed Medicare for 40 services in 2024, and Dr. Ma accepts Medicare assignment.
What is Dr. David H. Ma's MIPS score?
Dr. Ma's MIPS final score for performance year 2024 is 57 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. David H. Ma see?
CMS counts 52 Medicare patients who saw Dr. Ma in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. David H. Ma bill to Medicare?
In 2024, Dr. Ma's most billed Medicare services were hospital inpatient care (99232) and office visit, new patient (99204).
Where did Dr. David H. Ma go to medical school?
Dr. Ma graduated from University of Massachusetts Medical School in 2016.
What drugs does Dr. David H. Ma prescribe most?
In 2024 Medicare Part D data, Dr. Ma's most prescribed drugs by claims were Oxycodone HCl and Ibuprofen.
Has Dr. David H. Ma received payments from drug or device companies?
CMS Open Payments shows $236 in general payments to Dr. Ma from 5 companies from 2016 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. David H. Ma been practicing?
Dr. Ma graduated from medical school in 2016, 10 years ago.
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