Iris Ma
- Medicare services, 2024
- 747
- Medicare patients, 2024
- 240
- Part D claims, 2024
- 211
- Publications
- 10
- MIPS score, 2024
- 100
- Practice address
- 2333 Buchanan St, San Francisco, CA 94115
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD
Acute Care Hospital outpatient department · San Francisco, California
Find Iris 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.
Iris Ma is an internist in San Francisco, California
Iris Ma practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California.
Iris Ma's NPI, 1598055766, was assigned on April 8, 2011. Iris Ma graduated from University of California, San Francisco School of Medicine in 2010. Iris Ma holds California license A122086.
- NPI
- 1598055766NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800018219
- NPI enumeration date
- April 8, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Iris Ma practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California
Iris Ma's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD, at 2333 Buchanan St, San Francisco, CA 94115.
- California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD2333 Buchanan St, San Francisco, CA 94115
Source: Dmand AI Affiliation Data
Iris Ma is affiliated with 6 sites of care and 1 medical group
Iris Ma's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. Iris Ma is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is Pacific Inpatient Medical Group. Dmand AI also links Iris Ma to 4 more hospitals, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Iris Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Iris Ma practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Iris Ma is one of 16,751 internists in California
Internal medicine is Iris Ma's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Iris Ma is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Iris 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
Iris Ma billed Medicare for 747 services in 2024
CMS data shows 747 Medicare services from Iris Ma across 5 procedure codes in 2024, for 240 Medicare patients. Medicare paid $75,098 for them. Every service was in a facility, such as a hospital, rather than an office.
Iris Ma's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9002024: 70322%
- Other services
- 2023: 552024: 4420%
Iris Ma compared with the California median for internists, 2024
- Iris Ma
- California median
- Medicare services
- 747vs 3612.1 times
- Medicare patients
- 240vs 15159% above
- Part D claims
- 14vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Iris 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 Iris Ma?
Medicare shows one payer. Book a meeting to get commercial claims data for Iris Ma and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Iris Ma treated 240 Medicare patients in 2024, average age 76
CMS counts 240 Medicare patients who saw Iris Ma in 2024. The largest group is 75 to 84, with 86 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 52% are also on Medicaid. Their average risk score is 2.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Iris Ma's median patient age at 69, with 48% women.
Iris Ma's Medicare patients by age, 2024
Iris Ma's Medicare patients by sex, 2024
- Women12150%
- Men11950%
Chronic conditions among Iris Ma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis58%
- Mood disorders47%
- Chronic kidney disease46%
- Heart failure42%
- Atrial fibrillation41%
- Depression41%
Share of Medicare patients with each condition. A patient can have several.
Iris 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
- Women48%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Iris Ma wrote 211 Medicare Part D claims in 2024
In 2024, Iris Ma wrote 211 Medicare Part D claims for 87 patients. 78% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $7,488 in total drug cost. In 2023, CMS named 42 claims across 3 drugs.
Iris Ma's Part D claims by kind of drug, 2024
- Generic165 claims78%
- Brand-name46 claims22%
Iris 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 Iris Ma's Part D claims, 2024
- Antibiotics17%35 of 211 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: 422024: 1467%
Drugs named by CMS: 1 in 2024, 3 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
Iris Ma scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Iris Ma for performance year 2024, reported as part of a group. Iris Ma accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Iris Ma's MIPS scores, performance year 2024
- 100of 100Final score
- 90of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 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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Iris Ma has 10 publications on record
Dmand AI links 10 papers to Iris Ma, published from 2019 to 2024. 2022 was the busiest year, with 3. The most frequent topics are Cardiac Surgical Procedures, COVID-19 and Hospital Mortality. Iris Ma has published most often in Arch Cardiovasc Dis.
Iris Ma's papers by year, 2019 to 2024
Topics Iris Ma writes about most
- Cardiac Surgical Procedures
- COVID-19
- Hospital Mortality
- SARS-CoV-2
- Comorbidity
- France
Recent publications by Iris Ma
Arch Cardiovasc Dis
Arch Cardiovasc Dis
See who Iris Ma researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Iris Ma works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Iris Ma received $31 in industry payments in 2017
CMS Open Payments shows 2 general payments to Iris Ma from 2 drug and device companies in 2017. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $16.
Companies that paid Iris Ma the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Iris Ma graduated from University of California, San Francisco School of Medicine
Iris Ma graduated from University of California, San Francisco School of Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Iris 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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)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) |
| 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) |
| 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 Iris 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 Iris Ma's NPI number?
Iris Ma's NPI number is 1598055766. It was assigned on April 8, 2011, and it is active in the NPI Registry.
What does Iris Ma specialize in?
Iris Ma is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Iris Ma practice?
Iris Ma practices at 2333 Buchanan St, San Francisco, CA 94115. Iris Ma's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. Dmand AI also links Iris Ma to 4 hospitals.
What is Iris Ma's medical license number?
Iris Ma holds California license A122086.
Which hospitals is Iris Ma affiliated with?
Iris Ma is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Iris Ma to 4 more hospitals.
What medical group is Iris Ma part of?
Iris Ma is linked to Pacific Inpatient Medical Group.
Does Iris Ma accept Medicare?
Yes. CMS data shows Iris Ma billed Medicare for 747 services in 2024, and Iris Ma accepts Medicare assignment.
What is Iris Ma's MIPS score?
Iris Ma's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Iris Ma see?
CMS counts 240 Medicare patients who saw Iris Ma in 2024, with an average age of 76.
What services does Iris Ma bill to Medicare?
In 2024, Iris Ma's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Show 5 more questionsShow fewer questions
Where did Iris Ma go to medical school?
Iris Ma graduated from University of California, San Francisco School of Medicine in 2010.
What drugs does Iris Ma prescribe most?
In 2024 Medicare Part D data, Iris Ma's most prescribed drugs by claims were Eliquis.
Has Iris Ma received payments from drug or device companies?
CMS Open Payments shows $31 in general payments to Iris Ma from 2 companies from 2017 to 2017. The largest total came from Merck Sharp & Dohme Corporation.
How long has Iris Ma been practicing?
Iris Ma graduated from medical school in 2010, 16 years ago.
Does Iris Ma do research?
Dmand AI links 10 publications to Iris Ma, published from 2019 to 2024.
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