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Edit this profileAt a glance
- 4201 Torrance Blvd Ste 390, Torrance, CA 90503
About Dr. Lee
Based in Torrance, CA, Hae Seung Lee, M.D. is listed in the NPI registry under endocrinology, diabetes & metabolism. Hae Seung is also listed as specializing in internal medicine. Medicare claims data shows Hae Seung provided 500 services to 101 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes. NPI 1477971331 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
- (424) 210-5484
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
4201 TORRANCE BLVD STE 390
Torrance, CA 90503
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 Uptake and Scan
- Thyroid Cyst Alcohol Ablation
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
500 services · 101 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
451 | More than most peers in Endocrinology, Diabetes &… |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
49 | More 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.
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 endocrinologists in Torrance 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2003 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Hae Seung Lee specialize in?
Hae Seung Lee is an endocrinologist in Torrance, 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 Hae Seung Lee located?
Hae Seung Lee is listed at 4201 Torrance Blvd Ste 390, Torrance, CA 90503. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Hae Seung Lee's phone number?
The number on file is (424) 210-5484. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Hae Seung Lee?
Hae Seung Lee's National Provider Identifier is 1477971331. 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 Hae Seung Lee train?
Hae Seung Lee attended Other, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Hae Seung Lee have?
Hae Seung Lee has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What does Hae Seung Lee do most often?
According to Medicare billing data, Hae Seung Lee 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 Hae Seung Lee's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Hae Seung Lee. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.