Peter Ma
- Medicare services, 2024
- 442
- Medicare patients, 2024
- 366
- Part D claims, 2021
- 38
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 820 W Diamond Ave, Gaithersburg, MD 20878
- Practice phone
- Call (301) 315-3826
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventist Medical Group
Gaithersburg, Maryland
Find Peter 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.
Peter Ma is an internist in Gaithersburg, Maryland
Peter Ma practices at Adventist Medical Group in Gaithersburg, Maryland.
Peter Ma's NPI, 1811316359, was assigned on April 14, 2014. Peter Ma graduated from Arizona College of Osteopathic Medicine Mid Western University in 2014. Peter Ma holds Alabama license 1600.
- NPI
- 1811316359NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779873211
- NPI enumeration date
- April 14, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 315-3826
- 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)
Peter Ma practices at Adventist Medical Group in Gaithersburg, Maryland
Peter Ma's primary practice is Adventist Medical Group, at 820 W Diamond Ave, Gaithersburg, MD 20878 in Montgomery County. The practice phone is (301) 315-3826.
- Adventist Medical Group820 W Diamond Ave, Gaithersburg, MD 20878 · Montgomery CountyPhone(301) 315-3826
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Peter Ma is affiliated with 3 sites of care and 3 medical groups
Peter Ma's primary practice is Adventist Medical Group in Gaithersburg, Maryland. Peter Ma is also affiliated with Suburban Hospital. The medical group on file is Johns Hopkins Community Physicians. Dmand AI also links Peter Ma to 2 more medical groups and 1 group practice or clinic, 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 Peter Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Peter Ma practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Medical Group | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Peter Ma is one of 3,320 internists in Maryland
Internal medicine is Peter Ma's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Peter Ma is licensed in Alabama.
Specialties and state licenses
- Internal medicine, AlabamaPrimary
Internists near Peter Ma
Counts of internists 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
Peter Ma billed Medicare for 442 services in 2024
CMS data shows 442 Medicare services from Peter Ma across 3 procedure codes in 2024, for 366 Medicare patients. Medicare paid $59,561 for them. Every service was in a facility, such as a hospital, rather than an office.
Peter Ma's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4622024: 4424%
Peter Ma compared with the Maryland median for internists, 2024
- Peter Ma
- Maryland median
- Medicare services
- 442vs 65633% below
- Medicare patients
- 366vs 25146% above
- Part D claims
- 38vs 30988% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Peter 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Peter Ma treated 366 Medicare patients in 2024, average age 80
CMS counts 366 Medicare patients who saw Peter Ma in 2024. The largest group is 85 and over, with 137 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 2.02, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Peter Ma's median patient age at 74, with 53% women.
Peter Ma's Medicare patients by age, 2024
Peter Ma's Medicare patients by sex, 2024
- Women21458%
- Men15242%
Chronic conditions among Peter Ma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Chronic kidney disease47%
- Mood disorders45%
- Ischemic heart disease43%
- Depression40%
- Stroke or TIA40%
Share of Medicare patients with each condition. A patient can have several.
Peter 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
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Peter Ma wrote 38 Medicare Part D claims in 2021
In 2021, Peter Ma wrote 38 Medicare Part D claims. They cover 3 drugs, with $6,395 in total drug cost. In 2020, CMS named 25 claims across 2 drugs.
Peter Ma's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 252021: 3852%
Drugs named by CMS: 3 in 2021, 2 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Peter Ma scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Peter Ma for performance year 2024, reported as part of a group. Peter Ma accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Peter Ma's MIPS scores, performance year 2024
- 87of 100Final score
- 80.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Peter Ma received $252 in industry payments from 2016 to 2019
CMS Open Payments shows 9 general payments to Peter Ma from 4 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Amarin Pharma Inc. paid the most, $119.
General payments to Peter Ma by program year, 2016 to 2019
Companies that paid Peter Ma the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Peter Ma graduated from Arizona College of Osteopathic Medicine Mid Western University
Peter Ma graduated from Arizona College of Osteopathic Medicine Mid Western University in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Peter 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 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) |
| 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) |
| 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 Peter 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 Peter Ma's NPI number?
Peter Ma's NPI number is 1811316359. It was assigned on April 14, 2014, and it is active in the NPI Registry.
What does Peter Ma specialize in?
Peter Ma is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Peter Ma practice?
Peter Ma practices at 820 W Diamond Ave, Gaithersburg, MD 20878. Peter Ma's primary practice is Adventist Medical Group in Gaithersburg, Maryland. Dmand AI also links Peter Ma to 2 medical groups and 1 group practice or clinic.
What is Peter Ma's office phone number?
The practice phone on file for Peter Ma is (301) 315-3826.
What is Peter Ma's medical license number?
Peter Ma holds Alabama license 1600.
Which hospitals is Peter Ma affiliated with?
Peter Ma is affiliated with Suburban Hospital.
What medical group is Peter Ma part of?
Peter Ma is linked to Johns Hopkins Community Physicians. Dmand AI links Peter Ma to 2 more medical groups.
Does Peter Ma accept Medicare?
Yes. CMS data shows Peter Ma billed Medicare for 442 services in 2024, and Peter Ma accepts Medicare assignment.
What is Peter Ma's MIPS score?
Peter Ma's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Peter Ma see?
CMS counts 366 Medicare patients who saw Peter Ma in 2024, with an average age of 80.
Show 5 more questionsShow fewer questions
What services does Peter Ma bill to Medicare?
In 2024, Peter Ma's most billed Medicare services were hospital inpatient care (99223), care management and other visits (99497) and critical care (99291).
Where did Peter Ma go to medical school?
Peter Ma graduated from Arizona College of Osteopathic Medicine Mid Western University in 2014.
What drugs does Peter Ma prescribe most?
In 2021 Medicare Part D data, Peter Ma's most prescribed drugs by claims were Combigan, Divalproex Sodium and Azopt.
Has Peter Ma received payments from drug or device companies?
CMS Open Payments shows $252 in general payments to Peter Ma from 4 companies from 2016 to 2019. The largest total came from Amarin Pharma Inc.
How long has Peter Ma been practicing?
Peter Ma graduated from medical school in 2014, 12 years ago.
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