Grant Nash Corning, MD
Ophthalmology Physician · Ada, OK
Grant Nash Corning, MD is an ophthalmology physician with a practice address in Ada, Oklahoma, and NPI 1033259114, issued on Feb 7, 2007. Check the license (Oklahoma 25023, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Grant Nash Corning
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 25023 OK
Self-reported in NPPES; status is on the state search - Practice location
- 1425 Arlington St, Ada, OK 74820
- Phone
- (580) 332-1880
- Enumerated
- Feb 7, 2007
- Record last updated
- Jan 17, 2023
- Fax
- (580) 332-2214
- Medicaid ID
- 200122220A OK
- Medicare enrollment
- Enrolled (PECOS I20150302001253); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 208 in Oklahoma → Look up another NPI →
Verify Grant Nash Corning in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 25023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,415 Medicare Part D claims for 781 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims. 24 claims were for opioids.
Most prescribed
- Prednisolone Acetate564 claims
- Moxifloxacin559 claims
- Ketorolac Tromethamine545 claims
- Latanoprost486 claims
- Restasis209 claims
- Fluorometholone185 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 MIPS final score for 2023 (Medicare payment program): 68.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $258.64
15 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.
Grant Nash Corning among 208 ophthalmology physician records in Oklahoma
Grant Nash Corning, MD is one of 208 ophthalmology physician records with a practice address in Oklahoma. 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 41% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2006 · median 2003 among the 128 with a school on file
- Record last updated2023 · 55% 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 Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Oklahoma
There are 208 ophthalmology physician records in Oklahoma.
All 208 in Oklahoma → Every provider in Ada → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- John Robinson, MDShawnee, OK 748041841286226
- Kevin Croft, M.D.Durant, OK 747011245245059
- Chris Knobbe, M.D.Durant, OK 747011851382220
- Matthew Phillips, M.D.Durant, OK 747011457619272
- Thomas Carter, MDPonca City, OK 746011205878055
- Pamela Poland, M.D.Ponca City, OK 746011285639781
- James Dunagin, MDMcAlester, OK 745011104928530
- Richard Castillo, DOTahlequah, OK 744641679593008
Common questions
What is Grant Nash Corning, MD's NPI number?
Grant Nash Corning, MD's National Provider Identifier (NPI) is 1033259114, issued on Feb 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Grant Nash Corning, MD located?
The NPPES record lists a practice address at 1425 Arlington St, Ada, OK, 74820. Phone: (580) 332-1880. Providers update this record themselves, so call before visiting.
How can I verify Grant Nash Corning, MD's license?
NPPES lists Oklahoma license number 25023, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grant Nash Corning, MD prescribe under Medicare Part D?
In 2024, Grant Nash Corning, MD had 3,415 Medicare Part D claims for 781 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Grant Nash Corning, MD's MIPS final score?
The 2023 MIPS final score is 68.9 of 100. 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.