Physician Profile
Marguerite Yao, MD
Unclaimed ProfileAbout Dr. Yao
Marguerite Yao, MD is a healthcare provider in Chapel Hill, NC specializing in internal medicine. Marguerite trained at Northwestern University Feinberg Medical School, graduating in 2010. According to Medicare claims data, Marguerite cared for 924 Medicare patients across 1,141 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (919) 942-5123
- Email not available
Practice Locations
940 MARTIN LUTHER KING JR BLVD
Chapel Hill, NC 27514
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
- High blood pressure
- High cholesterol
Digestive and liver
- Acid reflux
- Fatty liver disease
- IBS
Endocrine, blood, and bone
- Gout
Infectious disease
- Shingles
Kidney and urinary
- Chronic kidney disease
- Enlarged prostate
Respiratory
- Acute bronchitis
- Asthma
- COPD
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
- AFib
Digestive
Heart & Circulation
- Heart disease
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
- Generalized anxiety disorder
- Insomnia and Sleep Problems
Neurologic and behavioral
- Depression
- Migraines
Pain
- Back pain
Rheumatologic and pain
- Osteoarthritis
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
Screening and diagnostic testing
- EKG
- Spirometry
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart health
Imaging referral
Immunizations
- Tetanus shot
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
- Knee Joint Injection
Preventive & Routine Care
- Smoking cessation counseling
Screenings & Diagnostics
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
1,141 services · 924 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
12 | Less often than most peers in Internal Medicine |
| Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage | Treatment | 90656 |
11 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
235 | As often as other peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
161 | More often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
149 | As often as other peers in Internal Medicine |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
121 | As often as other peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
104 | As often as other peers in Internal Medicine |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
95 | Less often than most peers in Internal Medicine |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
77 | As often as other peers in Internal Medicine |
| Hemoglobin a1c level | Lab test | 83036 |
54 | As often as other peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internists in Chapel Hill 8
Same specialty, same city.
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2010 at Northwestern University Feinberg Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine split virus, preservative free 8
Providers in NC who bill this service to Medicare most often.
Common questions
What does Dr. Yao specialize in?
Dr. Yao is an internist in Chapel Hill, NC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is Dr. Yao located?
Dr. Yao is listed at 940 Martin Luther King Jr Blvd, Chapel Hill, NC 27514. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Yao's phone number?
The number on file is (919) 942-5123. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Yao's NPI number?
Dr. Yao's National Provider Identifier is 1093030264. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Yao go to medical school?
Dr. Yao attended Northwestern University Feinberg Medical School, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Yao been practicing?
Dr. Yao has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Yao do most often?
According to Medicare billing data, Dr. Yao provides treatments such as influenza vaccine split virus, preservative free and influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Yao confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Yao. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.