Mark A. Grandas, O.D.
Optometrist · York, PA
Mark A. Grandas, O.D. is an optometrist with a practice address in York, Pennsylvania, and NPI 1881675270, issued on Nov 11, 2005. Check the license (Pennsylvania OEG000064, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark A. Grandas
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OEG000064 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1018 N George St, York, PA 17404
- Phone
- (717) 848-1316
- Enumerated
- Nov 11, 2005
- Record last updated
- Apr 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (717) 846-5440
- Medicaid ID
- 01974483 PA
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,640 in Pennsylvania → Look up another NPI →
Verify Mark A. Grandas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license OEG000064Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average optometrist in 2024
268 Medicare Part D claims for 91 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost87 claims
- Timolol Maleate34 claims
- Dorzolamide-Timolol30 claims
- Lumigan13 claims
- Brimonidine Tartrate-Timolol11 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.
Industry payments in 2024: $19.41
1 payment: 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.
Mark A. Grandas among 2,640 optometrist records in Pennsylvania
Mark A. Grandas, O.D. is one of 2,640 optometrist records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2012 · 69% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Pennsylvania
There are 2,640 optometrist records in Pennsylvania.
All 2,640 in Pennsylvania → Every provider in York → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Alyssa Carpenter, ODYork, PA 174041588235931
- Stephen Cruse, O.D.York, PA 174041447327226
- Lisa Demers, O.D.York, PA 174041528135316
- Sara Kainulainen, ODYork, PA 174041740068014
- Melvin Lubart, ODYork, PA 174041588866214
- Florence McDonald, O.D.York, PA 174041093806226
- Sunish Singh, ODYork, PA 174041356940449
- Terry Smith, O.D.York, PA 174041598751620
Common questions
What is Mark A. Grandas, O.D.'s NPI number?
Mark A. Grandas, O.D.'s National Provider Identifier (NPI) is 1881675270, issued on Nov 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Grandas, O.D. located?
The NPPES record lists a practice address at 1018 N George St, York, PA, 17404. Phone: (717) 848-1316. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Grandas, O.D.'s license?
NPPES lists Pennsylvania license number OEG000064, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Mark A. Grandas, O.D. prescribe under Medicare Part D?
In 2024, Mark A. Grandas, O.D. had 268 Medicare Part D claims for 91 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.