Chang Sup Lee, MD
NPI 1598296238 · Ophthalmology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chang Sup Lee, MD is a Ophthalmology Physician provider in Los Angeles, CA (NPI 1598296238).
Provider details
- NPI number
- 1598296238
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A172874 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,434 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Imaging of Retina92134 | 547 | $44 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 349 | $139 |
| Injection of Drug Into Eye67028 | 230 | $129 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 | 102 | $92 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 101 | $178 |
| Exam of Retinal Blood Vessels Using a Special Camera After Injection of a Dye92235 | 43 | $186 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 83 | 51 |
| Ofloxacin | 41 | 33 |
| Brimonidine Tartrate | 25 | 18 |
| Ketorolac Tromethamine | 21 | 13 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 19 | 15 |
| Timolol Maleate | 16 | — |
| Atropine Sulfate | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,046 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 1450 San Pablo St Ste 400Los Angeles, CA 90033-5331Phone: (323) 442-6335
- 555 N 13th AveUpland, CA 91786-4904Phone: (800) 345-8979Fax: (909) 949-3967
Registry dates
- Enumerated
- 2017-03-24
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is Chang Sup Lee's NPI number?
- Chang Sup Lee's National Provider Identifier (NPI) is 1598296238, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chang Sup Lee's specialty?
- Chang Sup Lee is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Chang Sup Lee located?
- Chang Sup Lee's practice location on file with NPPES is 520 S Virgil Ave Ste 103, Los Angeles, CA 90020-1425.
- What is Chang Sup Lee's phone number?
- The practice phone number listed in the NPPES registry for Chang Sup Lee is (404) 783-3508.
- Does Chang Sup Lee accept Medicare?
- Chang Sup Lee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chang Sup Lee's NPI active?
- Yes — Chang Sup Lee's NPI (1598296238) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.