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Edit this profileWhere to find Fiona Yuen, M.D.
- Walnut Creek location main office
1450 Treat Blvd # 200, Walnut Creek, CA 94597 - Brentwood location
2400 Balfour Rd Ste 201, Brentwood, CA 94513
About Dr. Yuen
Based in Walnut Creek, CA, Fiona Yuen, M.D. is listed in the NPI registry under endocrinology, diabetes & metabolism. Medicare claims data shows Fiona provided 25,936 services to 1,311 patients. The services billed most often include injection, romosozumab-aqqg, 1 mg, injection, denosumab, 1 mg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1649513599 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
- (925) 296-9702
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1450 TREAT BLVD # 200
Walnut Creek, CA 94597
2400 Balfour Rd Ste 201
Brentwood, CA 94513
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
25,936 services · 1,311 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
220 | More than most peers in Endocrinology, Diabetes &… |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
15 | Less often than most peers in Endocrinology, Diabetes &… |
| Injection, romosozumab-aqqg, 1 mg | Drug given | J3111 |
15,960 | As often as other peers in Endocrinology, Diabetes &… |
| Injection, denosumab, 1 mg | Drug given | J0897 |
8,222 | More than most peers in Endocrinology, Diabetes &… |
| Injection, zoledronic acid, 1 mg | Drug given | J3489 |
68 | Less often than most 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 |
758 | More 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 |
294 | More 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 |
180 | More than most 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 |
132 | More often than most peers in Endocrinology, Diabetes &… |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
41 | As often as other 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 Walnut Creek 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Fiona Yuen specialize in?
Fiona Yuen is an endocrinologist in Walnut Creek, 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 Fiona Yuen located?
Fiona Yuen is listed at 1450 Treat Blvd # 200, Walnut Creek, CA 94597. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Fiona Yuen's phone number?
The number on file is (925) 296-9702. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Fiona Yuen?
Fiona Yuen's National Provider Identifier is 1649513599. 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 Fiona Yuen train?
Fiona Yuen attended Other, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Fiona Yuen have?
Fiona Yuen has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What does Fiona Yuen do most often?
According to Medicare billing data, Fiona Yuen provides treatments such as injection of drug or substance under skin or into muscle and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Fiona Yuen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Fiona Yuen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.