Diane T. Flanigen, M.D.
Ophthalmology Physician · Williamsville, NY
Diane T. Flanigen, M.D. is an ophthalmology physician with a practice address in Williamsville, New York, and NPI 1912985904, issued on Jan 9, 2006. Check the license (New York 178565, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Diane T. Flanigen
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 178565 NY
178565-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 6333 Main Street, Williamsville, NY 14221
- Phone
- (716) 632-3545
- Enumerated
- Jan 9, 2006
- Record last updated
- Aug 6, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (716) 632-6368
- Medicaid ID
- 01154094 NY
- Medicare enrollment
- Enrolled (PECOS I20040929000337); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Verify Diane T. Flanigen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 178565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,251 Medicare Part D claims for 374 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Latanoprost496 claims
- Dorzolamide-Timolol146 claims
- Timolol Maleate111 claims
- Cyclosporine95 claims
- Xiidra47 claims
- Erythromycin46 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): 72.3 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: $279.90
17 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Ophthalmic Consultants OF Long IslandWilliamsville, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane T. Flanigen among 1,822 ophthalmology physician records in New York
Diane T. Flanigen, M.D. is one of 1,822 ophthalmology physician records with a practice address in New York. 79% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1984 · median 1995 among the 1,215 with a school on file
- Record last updated2019 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in New York
There are 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Williamsville → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kenneth Anthone, M.D., F.A.C.S.Williamsville, NY 142211427040294
- Jon Dusse, MDWilliamsville, NY 142211558327742
- Barry Epstein, MDWilliamsville, NY 142211760475156
- Peter Forgach, M.D.Williamsville, NY 142211427051515
- Paul Holmwood, MDWilliamsville, NY 142211225039043
- Mehdi Khan, DOWilliamsville, NY 142211679569214
- Jeffrey Lamkin, MDWilliamsville, NY 142211649241241
- Richard Lepie, MDBuffalo, NY 142211891759635
Common questions
What is Diane T. Flanigen, M.D.'s NPI number?
Diane T. Flanigen, M.D.'s National Provider Identifier (NPI) is 1912985904, issued on Jan 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane T. Flanigen, M.D. located?
The NPPES record lists a practice address at 6333 Main Street, Williamsville, NY, 14221. Phone: (716) 632-3545. Providers update this record themselves, so call before visiting.
How can I verify Diane T. Flanigen, M.D.'s license?
NPPES lists New York license number 178565, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diane T. Flanigen, M.D. prescribe under Medicare Part D?
In 2024, Diane T. Flanigen, M.D. had 1,251 Medicare Part D claims for 374 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Diane T. Flanigen, M.D.'s MIPS final score?
The 2023 MIPS final score is 72.3 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.