Lung Chang, MD
NPI 1013935444 · Ophthalmology Physician · Alhambra, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lung Chang, MD is a Ophthalmology Physician provider in Alhambra, CA (NPI 1013935444).
Provider details
- NPI number
- 1013935444
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C39371 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
168 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Optic Nerve92133 | 79 | $40 |
| Established Patient Complete Exam of Visual System92014 | 49 | $139 |
| New Patient Complete Exam of Visual System92004 | 40 | $165 |
Typical Medicare-allowed amounts for these services range $40–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 311 | 117 |
| Ketorolac Tromethamine | 155 | 97 |
| Timolol Maleate | 108 | 33 |
| Brimonidine Tartrate | 71 | 27 |
| Amoxicillin | 47 | 35 |
| Latanoprost | 43 | 15 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 40 | 27 |
| Gentamicin Sulfate | 30 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lung Chang's NPI number?
- Lung Chang's National Provider Identifier (NPI) is 1013935444, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lung Chang's specialty?
- Lung Chang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Lung Chang located?
- Lung Chang's practice location on file with NPPES is 1528 S Garfield Ave, Alhambra, CA 91801.
- What is Lung Chang's phone number?
- The practice phone number listed in the NPPES registry for Lung Chang is (626) 289-5432.
- Does Lung Chang accept Medicare?
- Lung Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lung Chang's NPI active?
- Yes — Lung Chang's NPI (1013935444) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.