Dr. Marguerite Martha Yao, MD
- Medicare services, 2024
- 1,141
- Medicare patients, 2024
- 240
- Part D claims, 2024
- 4,853
- Hospital affiliations
- 2
- Industry payments
- $198
- Practice address
- 940 Martin Luther King Jr Blvd, Chapel Hill, NC 27514
- Practice phone
- Call (800) 594-8624
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UNC Physicians Network
Chapel Hill, North Carolina
Find Dr. Yao'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. Marguerite Martha Yao is an internist in Chapel Hill, North Carolina
Dr. Yao practices at UNC Physicians Network in Chapel Hill, North Carolina.
Dr. Yao's NPI, 1093030264, was assigned on March 31, 2010. Dr. Yao graduated from Northwestern University Feinberg Medical School in 2010. Dr. Yao holds North Carolina license 2013-00760.
- NPI
- 1093030264NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931343407
- NPI enumeration date
- March 31, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (800) 594-8624
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marguerite Martha Yao practices at UNC Physicians Network in Chapel Hill, North Carolina
Dr. Yao's primary practice is UNC Physicians Network, at 940 Martin Luther King Jr Blvd, Chapel Hill, NC 27514 in Orange County. The practice phone is (800) 594-8624.
- UNC Physicians Network940 Martin Luther King Jr Blvd, Chapel Hill, NC 27514 · Orange CountyPhone(800) 594-8624
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marguerite Martha Yao is affiliated with 5 sites of care and 2 medical groups
Dr. Yao's primary practice is UNC Physicians Network in Chapel Hill, North Carolina. Dr. Yao is also affiliated with UNC Hospitals. The medical group on file is UNC Physicians Network. Dmand AI also links Dr. Yao to 1 more hospital, 2 group practices and clinics and 1 medical group, 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. Marguerite Martha Yao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yao practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UNC Physicians Network | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marguerite Martha Yao is one of 3,705 internists in North Carolina
Internal medicine is Dr. Yao's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Yao is licensed in North Carolina.
Specialties and state licenses
- Internal medicine, North CarolinaPrimary
Internists near Dr. Yao
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. Marguerite Martha Yao billed Medicare for 1,141 services in 2024
CMS data shows 1,141 Medicare services from Dr. Yao across 15 procedure codes in 2024, for 240 Medicare patients. Medicare paid $51,067 for them. Every service was in an office.
Dr. Yao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4752024: 54615%
- Office and hospital visits
- 2023: 4092024: 4336%
- Other services
- 2023: 1652024: 13916%
- Tests and treatments
- 2023: 992024: 2377%
Dr. Yao compared with the North Carolina median for internists, 2024
- Dr. Yao
- North Carolina median
- Medicare services
- 1,141vs 5212.2 times
- Medicare patients
- 240vs 18530% above
- Part D claims
- 4,216vs 27215.5 times
Medians across 3,695 internists in North Carolina with Dmand AI profiles that report each measure.
Dr. Yao'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. Yao and other internists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marguerite Martha Yao treated 240 Medicare patients in 2024, average age 74
CMS counts 240 Medicare patients who saw Dr. Yao in 2024. The largest group is 65 to 74, with 128 patients. 66% of them have high cholesterol, and 45% have high blood pressure. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Yao's median patient age at 73, with 74% women.
Dr. Yao's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Yao's Medicare patients by sex, 2024
- Women16268%
- Men7833%
Chronic conditions among Dr. Yao's Medicare patients, 2024
- High cholesterol66%
- High blood pressure45%
- Arthritis36%
- Cancer19%
- Anxiety17%
- Mood disorders16%
- Osteoporosis15%
- Depression14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women74%
- Men25%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marguerite Martha Yao wrote 4,853 Medicare Part D claims in 2024
In 2024, Dr. Yao wrote 4,853 Medicare Part D claims for 407 patients. 87% of them were for generic drugs. CMS names the drug for 4,216 of them, across 101 drugs with 11 or more claims each, at $318,356 in total drug cost. In 2023, CMS named 4,276 claims across 98 drugs.
Dr. Yao's Part D claims by kind of drug, 2024
- Generic4,203 claims87%
- Brand-name630 claims13%
- Other20 claims0%
Dr. Yao'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. Yao's Part D claims, 2024
- Opioids3%167 of 4,853 claims
- Antibiotics3%145 of 4,853 claims
- Antipsychotics, patients 65 and over0%15 of 4,853 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: 4,2762024: 4,2161%
Drugs named by CMS: 101 in 2024, 98 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. Marguerite Martha Yao offers telehealth to Medicare patients
Dr. Yao accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Yao as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marguerite Martha Yao received $198 in industry payments from 2021 to 2025
CMS Open Payments shows 10 general payments to Dr. Yao from 6 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 91% of the total. Ardelyx, Inc. paid the most, $69.
General payments to Dr. Yao by program year, 2021 to 2025
General payments to Dr. Yao by kind, 2021 to 2025
- Food and beverage$18091%
- Debt forgiveness$189%
Companies that paid Dr. Yao the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marguerite Martha Yao graduated from Northwestern University Feinberg Medical School
Dr. Yao graduated from Northwestern University Feinberg Medical School in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marguerite Martha Yao'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 |
| 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. Marguerite Martha Yao
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. Marguerite Martha Yao's NPI number?
Dr. Marguerite Martha Yao's NPI number is 1093030264. It was assigned on March 31, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Marguerite Martha Yao?
Dr. Marguerite Martha Yao is an internist in Chapel Hill, North Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marguerite Martha Yao practice?
Dr. Yao practices at 940 Martin Luther King Jr Blvd, Chapel Hill, NC 27514. Dr. Yao's primary practice is UNC Physicians Network in Chapel Hill, North Carolina. Dmand AI also links Dr. Yao to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Marguerite Martha Yao's office phone number?
The practice phone on file for Dr. Yao is (800) 594-8624.
What is Dr. Marguerite Martha Yao's medical license number?
Dr. Yao holds North Carolina license 2013-00760.
Which hospitals is Dr. Marguerite Martha Yao affiliated with?
Dr. Yao is affiliated with UNC Hospitals. Dmand AI links Dr. Yao to 1 more hospital.
What medical group is Dr. Marguerite Martha Yao part of?
Dr. Yao is linked to UNC Physicians Network. Dmand AI links Dr. Yao to 1 more medical group.
Does Dr. Marguerite Martha Yao accept Medicare?
Yes. CMS data shows Dr. Yao billed Medicare for 1,141 services in 2024, and Dr. Yao accepts Medicare assignment.
Does Dr. Marguerite Martha Yao offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Yao as offering telehealth services.
How many Medicare patients does Dr. Marguerite Martha Yao see?
CMS counts 240 Medicare patients who saw Dr. Yao in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Marguerite Martha Yao bill to Medicare?
In 2024, Dr. Yao's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and lab and pathology test (85025).
Where did Dr. Marguerite Martha Yao go to medical school?
Dr. Yao graduated from Northwestern University Feinberg Medical School in 2010.
What drugs does Dr. Marguerite Martha Yao prescribe most?
In 2024 Medicare Part D data, Dr. Yao's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levothyroxine Sodium.
Has Dr. Marguerite Martha Yao received payments from drug or device companies?
CMS Open Payments shows $198 in general payments to Dr. Yao from 6 companies from 2021 to 2025. The largest total came from Ardelyx, Inc.
How long has Dr. Marguerite Martha Yao been practicing?
Dr. Yao graduated from medical school in 2010, 16 years ago.
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