Masayuki Kazahaya, M.D.
NPI 1619974391 · Ophthalmology Physician · Allentown, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Masayuki Kazahaya, M.D. is a Ophthalmology Physician provider in Allentown, PA (NPI 1619974391).
Provider details
- NPI number
- 1619974391
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- MD048976L (PA)
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
11,012 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 | 4,549 | $38 |
| Injection of Drug Into Eye67028 | 2,502 | $117 |
| Established Patient Complete Exam of Visual System92014 | 2,070 | $117 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 | 669 | $83 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 617 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 246 | $121 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 84 | 51 |
| Brimonidine Tartrate | 43 | 16 |
| Ketorolac Tromethamine | 31 | — |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 28 | — |
| Latanoprost | 20 | — |
| Dorzolamide Hcl | 14 | — |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 13 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$214 across 6 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
- 2005-07-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Masayuki Kazahaya's NPI number?
- Masayuki Kazahaya's National Provider Identifier (NPI) is 1619974391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Masayuki Kazahaya's specialty?
- Masayuki Kazahaya is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Masayuki Kazahaya located?
- Masayuki Kazahaya's practice location on file with NPPES is 1251 S Cedar Crest Blvd, Allentown, PA 18103-6205.
- What is Masayuki Kazahaya's phone number?
- The practice phone number listed in the NPPES registry for Masayuki Kazahaya is (610) 820-6320.
- Does Masayuki Kazahaya accept Medicare?
- Masayuki Kazahaya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Masayuki Kazahaya's NPI active?
- Yes — Masayuki Kazahaya's NPI (1619974391) 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.