Ryan Constantine, M.D., PHD
Retina Specialist (Ophthalmology) Physician · Erie, PA
Ryan Constantine, M.D., PHD is a retina specialist (ophthalmology) physician with a practice address in Erie, Pennsylvania, and NPI 1932527199, issued on Apr 3, 2014. Check the license (Pennsylvania MD493400, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Ryan Constantine
- Credential
- M.D., PHD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- MD493400 PA
Self-reported in NPPES; status is on the state search - Practice location
- 300 State St, Erie, PA 16507
- Phone
- (814) 456-4241
- Enumerated
- Apr 3, 2014
- Record last updated
- Jan 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20200831000733); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 56 in Pennsylvania → Look up another NPI →
Also registered at 300 State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amjad AliSurgery Physician1174523807
- Molly Amann, CRNPNurse Practitioner1649674631
- Archana AnandInternal Medicine Physician1215231998
- Muhammad AsadSurgery Physician1851568695
- David Austin, OTR/LOccupational Therapist1790074987
- David Babins, MDOrthopaedic Surgery Physician1225031149
Verify Ryan Constantine in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD493400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
380 Medicare Part D claims for 153 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Moxifloxacin97 claims
- Prednisolone Acetate77 claims
- Difluprednate34 claims
- Dorzolamide-Timolol29 claims
- Ketorolac Tromethamine28 claims
- Latanoprost23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 95.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,017.63
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Erie Retinal Surgery, Inc.Erie, PA
- Orion Eye Center LLCRedmond, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Constantine among 56 retina specialist (ophthalmology) physician records in Pennsylvania
Ryan Constantine, M.D., PHD is one of 56 retina specialist (ophthalmology) physician records with a practice address in Pennsylvania. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 71% of them.
- NPI issued2014 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 89% of these records are
- Graduated2014 · median 2005 among the 50 with a school on file
- Record last updated2026 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Pennsylvania
There are 56 retina specialist (ophthalmology) physician records in Pennsylvania.
All 56 in Pennsylvania → Every provider in Erie → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Hassan Khojasteh Jafari, MDErie, PA 165071588358683
- Raed Mousa, MDErie, PA 165071639913403
- Christopher Bair, M.D.Hermitage, PA 161481245763390
- Marcus Estafanous, M.D.Farrell, PA 161211437151743
- Athar ShadmaniCamp Hill, PA 170111679317226
- Amy Lu, MD, PHDHershey, PA 170331548720923
- Komal Joshi, MDHummelstown, PA 170361285928200
- Bozho Todorich, MD, PHDLemoyne, PA 170431730472879
Common questions
What is Ryan Constantine, M.D., PHD's NPI number?
Ryan Constantine, M.D., PHD's National Provider Identifier (NPI) is 1932527199, issued on Apr 3, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Constantine, M.D., PHD located?
The NPPES record lists a practice address at 300 State St, Erie, PA, 16507. Phone: (814) 456-4241. Providers update this record themselves, so call before visiting.
How can I verify Ryan Constantine, M.D., PHD's license?
NPPES lists Pennsylvania license number MD493400, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan Constantine, M.D., PHD prescribe under Medicare Part D?
In 2024, Ryan Constantine, M.D., PHD had 380 Medicare Part D claims for 153 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Ryan Constantine, M.D., PHD's MIPS final score?
The 2023 MIPS final score is 95.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.