Mark I. Ohriner, O.D.
Optometrist · Las Vegas, NV
Mark I. Ohriner, O.D. is an optometrist with a practice address in Las Vegas, Nevada, and NPI 1922053784, issued on May 23, 2006. Check the license (Nevada 249, as entered in NPPES) with the Nevada board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark I. Ohriner
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 249 NV
Self-reported in NPPES; status is on the state search - Practice location
- 4675 W Flamingo RD, Las Vegas, NV 89103
- Phone
- (702) 364-1252
- Enumerated
- May 23, 2006
- Record last updated
- Aug 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (702) 852-5738
- Medicaid ID
- 002502012 NV
- Medicare enrollment
- Enrolled (PECOS I20060801000021); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1987
- Entity
- Type 1 · individual
8 nearest optometrist records → All 550 in Nevada → Look up another NPI →
Also registered at 4675 W Flamingo RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raymond Kellogg, O.D.Optometrist1487703724
Verify Mark I. Ohriner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Nevada board licenses this profession
Search for license 249Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average optometrist in 2024
242 Medicare Part D claims for 82 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Latanoprost41 claims
- Doxycycline Hyclate36 claims
- Tobramycin-Dexamethasone24 claims
- Timolol Maleate23 claims
- Brimonidine Tartrate14 claims
- Restasis12 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: $483.43
6 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. 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 I. Ohriner among 550 optometrist records in Nevada
Mark I. Ohriner, O.D. is one of 550 optometrist records with a practice address in Nevada. 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 5% of them.
- NPI issued2006 · 5% of these records are older, 68% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1987 · median 2010 among the 332 with a school on file
- Record last updated2021 · 61% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Nevada
There are 550 optometrist records in Nevada.
All 550 in Nevada → Every provider in Las Vegas → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Yen Chu Chen, ODLas Vegas, NV 891031215545330
- Raymond Kellogg, O.D.Las Vegas, NV 891031487703724
- Justin Lucido, ODLas Vegas, NV 891031700579125
- Romy Park, O.D.Las Vegas, NV 891031215155254
- Vincent Sorgentoni, O.D.Las Vegas, NV 891031619265543
- Jonathon Thomas, O.D.Las Vegas, NV 891031942254214
- Todd Angell, O.D.Las Vegas, NV 891041265465306
- Merle Barber, O.D.Las Vegas, NV 891041497788434
Common questions
What is Mark I. Ohriner, O.D.'s NPI number?
Mark I. Ohriner, O.D.'s National Provider Identifier (NPI) is 1922053784, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark I. Ohriner, O.D. located?
The NPPES record lists a practice address at 4675 W Flamingo RD, Las Vegas, NV, 89103. Phone: (702) 364-1252. Providers update this record themselves, so call before visiting.
How can I verify Mark I. Ohriner, O.D.'s license?
NPPES lists Nevada license number 249, as entered by the provider. Search the Nevada board that licenses this profession; the NPPES record confirms identity only.
How much does Mark I. Ohriner, O.D. prescribe under Medicare Part D?
In 2024, Mark I. Ohriner, O.D. had 242 Medicare Part D claims for 82 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.