Mark G. Ryan
Optometrist · New Haven, CT
Mark G. Ryan is an optometrist with a practice address in New Haven, Connecticut, and NPI 1548211220, issued on May 15, 2006. Check the license (Connecticut 002155, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark G. Ryan
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 002155 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1457 Whalley Ave, New Haven, CT 06515
- Phone
- (203) 562-3937
- Enumerated
- May 15, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (203) 389-3994
- Medicare enrollment
- Enrolled (PECOS I20100426000315); accepts Medicare assignment
- Medical or professional school
- New England College Of Optometry, 1987
- Entity
- Type 1 · individual
8 nearest optometrist records → All 675 in Connecticut → Look up another NPI →
Also registered at 1457 Whalley Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raymond Farmer, O.DOptometrist1447823158
- Iva Hoxha, ODOptometrist1396476016
- Wendy Kok, O.D.Optometrist1376709303
- Andrew Stack, O.D.Optometrist1306983648
Verify Mark G. Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 002155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average optometrist in 2024
27 Medicare Part D claims for 18 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $104.42
2 payments; by number, the most common kind was food and beverage; the largest payer was Glaukos Corporation. The 34,453 providers of this specialty with any payment received $769.99 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 one group practice
- Total Vision-Eye Health Center LLCMystic, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark G. Ryan among 675 optometrist records in Connecticut
Mark G. Ryan is one of 675 optometrist records with a practice address in Connecticut. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 57% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1987 · median 2008 among the 447 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Connecticut
There are 675 optometrist records in Connecticut.
All 675 in Connecticut → Every provider in New Haven → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Raymond Farmer, O.DNew Haven, CT 065151447823158
- Iva Hoxha, ODNew Haven, CT 065151396476016
- Peter Jamison, ODNew Haven, CT 065151407145485
- David Joel, O.D.New Haven, CT 065151861484081
- Wendy Kok, O.D.New Haven, CT 065151376709303
- Andrew Stack, O.D.New Haven, CT 065151306983648
- Xueling Zou, ODNew Haven, CT 065151568353084
- Sharon Bisighini-Fiske, O.D.West Haven, CT 065161912010372
Common questions
What is Mark G. Ryan's NPI number?
Mark G. Ryan's National Provider Identifier (NPI) is 1548211220, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark G. Ryan located?
The NPPES record lists a practice address at 1457 Whalley Ave, New Haven, CT, 06515. Phone: (203) 562-3937. Providers update this record themselves, so call before visiting.
How can I verify Mark G. Ryan's license?
NPPES lists Connecticut license number 002155, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Mark G. Ryan prescribe under Medicare Part D?
In 2024, Mark G. Ryan had 27 Medicare Part D claims for 18 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
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.