Ryan Constantine, M.D., PHD
NPI 1932527199 · Retina Specialist (Ophthalmology) Physician · Erie, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Constantine, M.D., PHD is a Retina Specialist (Ophthalmology) Physician provider in Erie, PA (NPI 1932527199).
Provider details
- NPI number
- 1932527199
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD
- Sex
- Male
- Sole proprietor
- No
- License
- MD493400 (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
12 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
5,667 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 | 2,499 | $40 |
| Injection of Drug Into Eye67028 | 1,591 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 575 | $90 |
| Established Patient Complete Exam of Visual System92014 | 516 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $125 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 113 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Moxifloxacin Hclbrand: Moxifloxacin | 97 | 75 |
| Prednisolone Acetate | 77 | 54 |
| Difluprednate | 34 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 29 | 17 |
| Ketorolac Tromethamine | 28 | 13 |
| Latanoprost | 23 | — |
| Ofloxacin | 19 | 17 |
| Erythromycin Base |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,018 across 11 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
- 2014-04-03
- Last updated
- 2026-01-20
- Certified
- 2026-01-20
Frequently asked questions
- What is Ryan Constantine's NPI number?
- Ryan Constantine's National Provider Identifier (NPI) is 1932527199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Constantine's specialty?
- Ryan Constantine is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Constantine located?
- Ryan Constantine's practice location on file with NPPES is 300 State St, Erie, PA 16507-1427.
- What is Ryan Constantine's phone number?
- The practice phone number listed in the NPPES registry for Ryan Constantine is (814) 456-4241.
- Does Ryan Constantine accept Medicare?
- Ryan Constantine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Constantine's NPI active?
- Yes — Ryan Constantine's NPI (1932527199) is active in the NPPES registry as of the last update on 2026-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.