Stephen Hwang, MD
NPI 1598735813 · Ophthalmology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Hwang, MD is a Ophthalmology Physician provider in Scottsdale, AZ (NPI 1598735813).
Provider details
- NPI number
- 1598735813
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 32896 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,604 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) |
|---|---|---|
| Measurement of Corneal Curvature and Depth of Eye92136 | 607 | $38 |
| Insertion of Drug Delivery Implant Into Tear Duct of Eye68841 | 556 | $15 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 510 | $517 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 489 | $123 |
| Microfluid Analysis of Tears83861 | 426 | $22 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 528 | 463 |
| Moxifloxacin Hclbrand: Moxifloxacin | 407 | 311 |
| Ketorolac Tromethamine | 222 | 194 |
| Cyclosporinebrand: Restasis | 164 | 82 |
| Besifloxacin Hclbrand: Besivance | 144 | 128 |
| Latanoprost | 118 | 40 |
| Nepafenacbrand: Ilevro | 108 | 91 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,990 across 57 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
Registry dates
- Enumerated
- 2006-01-26
- Last updated
- 2008-03-27
Frequently asked questions
- What is Stephen Hwang's NPI number?
- Stephen Hwang's National Provider Identifier (NPI) is 1598735813, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Hwang's specialty?
- Stephen Hwang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Hwang located?
- Stephen Hwang's practice location on file with NPPES is 7245 E Osborn Rd, Scottsdale, AZ 85251-6443.
- What is Stephen Hwang's phone number?
- The practice phone number listed in the NPPES registry for Stephen Hwang is (480) 994-5012.
- Does Stephen Hwang accept Medicare?
- Stephen Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Hwang's NPI active?
- Yes — Stephen Hwang's NPI (1598735813) is active in the NPPES registry as of the last update on 2008-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.