Physician Profile
Chung-Ying A. Chen, MD
Unclaimed ProfileAbout Dr. Chen
Chung-Ying A. Chen, MD is a healthcare provider in Sunnyvale, CA specializing in family practice. Chung-Ying trained at Indiana University School of Medicine, graduating in 1999. Chung-Ying is also listed as specializing in internal medicine and pediatrics. Medicare claims data shows Chung-Ying provided 184 services to 163 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1457436081.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (408) 730-4262
- Email not available
Practice Locations
401 OLD SAN FRANCISCO RD
Sunnyvale, CA 94086
Conditions Commonly Evaluated or Treated
Within Family 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
Digestive
Genitourinary and reproductive
Musculoskeletal and pain
Neurologic and behavioral
Respiratory and infectious
- Acute bronchitis
- Asthma
- Sinus infection
Skin
Common childhood and ear conditions
- Ear infection
- Pink eye
Pain & Joints
- Arthritis
- Back pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive interventions
Screening and testing
- Cholesterol screening
- Depression screening
- Diabetes and prediabetes screening
- EKG
Diagnostic Tests
- COVID-19 testing
- Rapid Strep and Flu Swabs
- Urine Drug Screen
Exams & Screenings
- Camp and School Physical
- Pre-Op Clearance Exam
Foot and Leg Pain
- Toenail Fungus Treatment
Heart & Circulation
Injections
Lungs & Breathing
Minor Procedures
- Burn and Wound Care
- Ingrown toenail removal
- Suture removal
Occupational Health
- DOT Physical
Office procedures
- Earwax removal
- Incision and drainage of an abscess
- Superficial foreign-body removal
Pain Management
- Joint injections
Preventive Care
- Chronic Illness Checkup
- Routine Vaccines
- Travel Vaccines And Consult
Respiratory
Senior Care
Sexual & Reproductive Health
- STD Swabs and Screening
Skin Procedures
- Cyst Removal
- Precancerous Sun Spot Freezing
- Skin Tag Removal
- Wart Removal
Sleep Health
- At-Home Sleep Study Order
Urgent Care Procedures
- Stitches and Laceration Repair
Wellness & Weight
- Weight Management Consult
Women's Health
- Hormone Replacement Therapy Consultation
Procedures Most Often Billed to Medicare
184 services · 163 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
72 | As often as other peers in Family Practice |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
48 | Less often than most peers in Family Practice |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
38 | Less often than most peers in Family Practice |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
14 | Less often than most peers in Family Practice |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
12 | Less often than most peers in Family Practice |
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 family practices at this location 4
Same specialty, same street address — most likely the same department or group.
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.
Other family practices in Sunnyvale 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Indiana University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at Indiana University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Chen's specialty?
Dr. Chen is a family practice in Sunnyvale, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Chen?
Dr. Chen is listed at 401 Old San Francisco Rd, Sunnyvale, CA 94086. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Chen?
The number on file is (408) 730-4262. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Chen?
Dr. Chen's National Provider Identifier is 1457436081. 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
What is Dr. Chen's medical education?
Dr. Chen attended Indiana University School of Medicine, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Chen have?
Dr. Chen has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Chen known for?
According to Medicare billing data, Dr. Chen the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Chen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.