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Edit this profileAt a glance
- 2501 E Chapman Ave Ste 203, Orange, CA 92869
About Dr. Hsiao
Based in Orange, CA, Joseph S. Hsiao, MD is listed in the NPI registry under endocrinology, diabetes & metabolism. Medicare claims data shows Joseph provided 412 services to 281 patients. The services billed most often include visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient', established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more. NPI 1699139287 identifies this record in the national registry.
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
- (714) 628-3230
- Email not available
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Practice Locations
2501 E CHAPMAN AVE STE 203
Orange, CA 92869
Conditions Commonly Evaluated or Treated
Within Endocrinology, Diabetes and Metabolism 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
Adrenal disorders
Blood sugar disorders
Bone and calcium disorders
Bones
Pituitary
Pituitary disorders
Thyroid
Thyroid disorders
Most searched conditions
Adrenal
Diabetes
Endocrine tumors
Hormone disorders
- Early or delayed puberty
- Excess facial or body hair
- Gynecomastia
- Perimenopause
- Testosterone deficiency
Hormones
Metabolic disorders
Metabolism
Parathyroid
Procedures & services
Adrenal
Adrenal evaluations
Blood sugar management
Bone evaluations
Bone treatments
Diabetes
- Automated Insulin System Setup
- Blood Ketone Monitoring
- C-Peptide Test
- Continuous Glucose Monitor Data Review
- Starting Insulin Therapy
- Medical nutrition therapy
Diabetes education
Genetic evaluations
Hormone treatments
- Growth Hormone Injections
- Hormone Replacement Therapy Consultation
- Estrogen and Progesterone Therapy
Hormones
Metabolic evaluations
Metabolism
Parathyroid
Pituitary
Pituitary evaluations
Routine Blood Tests
Thyroid
Thyroid procedures
- Thyroid Antibody Testing
- Thyroid Medication Adjustment
- Radioactive Iodine Treatment
- Thyroid Blood Test
- Thyroid Nodule Biopsy
- Thyroid Nodule Radiofrequency Ablation
Weight & Metabolism
Women's health
Most searched procedures
Diabetes preventive care
Procedures Most Often Billed to Medicare
412 services · 281 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
24 | Less often than most peers in Endocrinology, Diabetes &… |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
146 | As often as other peers in Endocrinology, Diabetes &… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
136 | Less often than most peers in Endocrinology, Diabetes &… |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
47 | As often as other peers in Endocrinology, Diabetes &… |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
27 | Less often than most peers in Endocrinology, Diabetes &… |
| Hemoglobin a1c level | Lab test | 83036 |
21 | Less often than most peers in Endocrinology, Diabetes &… |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
11 | Less often than most peers in Endocrinology, Diabetes &… |
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 endocrinologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 31 related providers in 4 groups
Other endocrinologists in Orange 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Hsiao specialize in?
Dr. Hsiao is an endocrinologist in Orange, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Endocrinology, Diabetes & Metabolism”.
NPI registry
Where is Dr. Hsiao located?
Dr. Hsiao is listed at 2501 E Chapman Ave Ste 203, Orange, CA 92869. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Hsiao's phone number?
The number on file is (714) 628-3230. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Hsiao?
Dr. Hsiao's National Provider Identifier is 1699139287. 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. Hsiao go to medical school?
Dr. Hsiao attended Other, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Hsiao have?
Dr. Hsiao has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Hsiao do most often?
According to Medicare billing data, Dr. Hsiao provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Hsiao's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hsiao. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.