Dr. Peter Yang Ma, MD
- Medicare services, 2024
- 4,309
- Medicare patients, 2024
- 366
- Part D claims, 2024
- 17,355
- Industry payments
- $4,845
- Affiliated sites
- 4
- Practice address
- 612 W Duarte Rd, Arcadia, CA 91007
- Practice phone
- Call (626) 294-9978
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peter Yang MA Medical Inc
Arcadia, California
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. Peter Yang Ma is an internist in Arcadia, California
Dr. Ma practices at Peter Yang MA Medical Inc in Arcadia, California.
Dr. Ma's NPI, 1902831019, was assigned on July 11, 2006. Dr. Ma graduated from Jinan Univ- Med Coll in 1985. Dr. Ma's California license number on file is A53050.
- NPI
- 1902831019NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507930849
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 294-9978
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter Yang Ma practices at Peter Yang MA Medical Inc in Arcadia, California
Dr. Ma's primary practice is Peter Yang MA Medical Inc, at 612 W Duarte Rd, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 294-9978.
- Peter Yang MA Medical Inc612 W Duarte Rd, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 294-9978
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Peter Yang Ma is affiliated with 5 sites of care and 1 medical group
Dr. Ma's primary practice is Peter Yang MA Medical Inc in Arcadia, California. The medical group on file is Peter Yang Ma, MD. Dmand AI also links Dr. Ma to 2 more home health agencies, 1 group practice or clinic and 1 skilled nursing facility, 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 Dr. Peter Yang Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ma practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peter Yang MA Medical Inc | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Peter Yang Ma is one of 16,751 internists in California
Internal medicine is Dr. Ma's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ma has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, acute skin infection, aneurysm, anxiety, aortic atherosclerois and arteritis among the conditions Dr. Ma treats.
Internists near Dr. 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
Dr. Peter Yang Ma billed Medicare for 4,309 services in 2024
CMS data shows 4,309 Medicare services from Dr. Ma across 18 procedure codes in 2024, for 366 Medicare patients. Medicare paid $285,433 for them. Every service was in an office.
Dr. Ma's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4,4342024: 3,28826%
- Other services
- 2023: 4832024: 60225%
- Tests and treatments
- 2023: 3722024: 27327%
- Drugs given in the office
- 2023: 1,4432024: 14690%
Dr. Ma compared with the California median for internists, 2024
- Dr. Ma
- California median
- Medicare services
- 4,309vs 36111.9 times
- Medicare patients
- 366vs 1512.4 times
- Part D claims
- 16,737vs 42139.8 times
Medians across 15,815 internists in California 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 internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter Yang Ma treated 366 Medicare patients in 2024, average age 78
CMS counts 366 Medicare patients who saw Dr. Ma in 2024. The largest group is 65 to 74, with 143 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ma's median patient age at 66, with 55% 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
- Women21759%
- Men14941%
Chronic conditions among Dr. Ma's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Chronic kidney disease53%
- Diabetes49%
- Ischemic heart disease28%
- Osteoporosis27%
- COPD18%
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 66
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter Yang Ma wrote 17,355 Medicare Part D claims in 2024
In 2024, Dr. Ma wrote 17,355 Medicare Part D claims for 926 patients. 90% of them were for generic drugs. CMS names the drug for 16,737 of them, across 156 drugs with 11 or more claims each, at $1,222,513 in total drug cost. In 2023, CMS named 17,811 claims across 171 drugs.
Dr. Ma's Part D claims by kind of drug, 2024
- Generic15,650 claims90%
- Brand-name1,675 claims10%
- Other30 claims0%
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
- Opioids0%18 of 17,355 claims
- Antibiotics2%378 of 17,355 claims
- Antipsychotics, patients 65 and over0%61 of 17,355 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: 17,8112024: 16,7376%
Drugs named by CMS: 156 in 2024, 171 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. Peter Yang Ma takes part in Medicare
Dr. Ma 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. Peter Yang Ma received $4,845 in industry payments from 2016 to 2025
CMS Open Payments shows 138 general payments to Dr. Ma from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Gilead Sciences, Inc. paid the most, $772.
General payments to Dr. Ma by program year, 2016 to 2025
General payments to Dr. Ma by kind, 2016 to 2025
- Food and beverage$4,49393%
- Education$3527%
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. Peter Yang Ma graduated from Jinan Univ- Med Coll
Dr. Ma graduated from Jinan Univ- Med Coll in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Peter Yang Ma accepts plans from 17 insurance carriers
Dr. Ma is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Molina
- +9 more carriersWith a free account
Plan types Dr. Ma accepts, by number of carriers
- HMO9
- Medicare9
- PPO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Peter Yang 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)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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Peter Yang 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. Peter Yang Ma's NPI number?
Dr. Peter Yang Ma's NPI number is 1902831019. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter Yang Ma?
Dr. Peter Yang Ma is an internist in Arcadia, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Peter Yang Ma practice?
Dr. Ma practices at 612 W Duarte Rd, Arcadia, CA 91007. Dr. Ma's primary practice is Peter Yang MA Medical Inc in Arcadia, California. Dmand AI also links Dr. Ma to 2 home health agencies, 1 group practice or clinic and 1 skilled nursing facility.
What is Dr. Peter Yang Ma's office phone number?
The practice phone on file for Dr. Ma is (626) 294-9978.
What is Dr. Peter Yang Ma's medical license number?
Dr. Ma's California license number on file is A53050.
What medical group is Dr. Peter Yang Ma part of?
Dr. Ma is linked to Peter Yang Ma, MD.
Does Dr. Peter Yang Ma accept Medicare?
Yes. CMS data shows Dr. Ma billed Medicare for 4,309 services in 2024, and Dr. Ma accepts Medicare assignment.
How many Medicare patients does Dr. Peter Yang Ma see?
CMS counts 366 Medicare patients who saw Dr. Ma in 2024, with an average age of 78.
What services does Dr. Peter Yang Ma bill to Medicare?
In 2024, Dr. Ma's most billed Medicare services were care management and other visits (99491), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Peter Yang Ma go to medical school?
Dr. Ma graduated from Jinan Univ- Med Coll in 1985.
Show 4 more questionsShow fewer questions
What drugs does Dr. Peter Yang Ma prescribe most?
In 2024 Medicare Part D data, Dr. Ma's most prescribed drugs by claims were Amlodipine Besylate, Rosuvastatin Calcium and Atorvastatin Calcium.
Has Dr. Peter Yang Ma received payments from drug or device companies?
CMS Open Payments shows $4,845 in general payments to Dr. Ma from 21 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Peter Yang Ma been practicing?
Dr. Ma graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Peter Yang Ma accept?
Dr. Ma is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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