Collin R. Ohning
Retina Specialist (Ophthalmology) Physician · Greenbelt, MD
Collin R. Ohning is a retina specialist (ophthalmology) physician with a practice address in Greenbelt, Maryland, and NPI 1992182794, issued on Apr 30, 2015. Check the license (Maryland D0087357, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Collin R. Ohning
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License numbers
- D0087357 MD
MD046964 DC
TRN22040 FL
0101266781 VA
Self-reported in NPPES; status is on the state search - Practice location
- 7501 Greenway Center Dr # 300, Greenbelt, MD 20770
- Phone
- (301) 474-4679
- Enumerated
- Apr 30, 2015
- Record last updated
- Jan 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (301) 474-7182
- Medicare enrollment
- Enrolled (PECOS I20210603001079); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 48 in Maryland → Look up another NPI →
Also registered at 7501 Greenway Center Dr # 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jason Huang, MDRetina Specialist (Ophthalmology) Physician1093058059
- Mariam Mathai, M.D.Retina Specialist (Ophthalmology) Physician1346694668
Verify Collin R. Ohning in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0087357Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
329 Medicare Part D claims for 112 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Prednisolone Acetate103 claims
- Ofloxacin48 claims
- Latanoprost29 claims
- Ketorolac Tromethamine28 claims
- Brimonidine Tartrate24 claims
- Timolol Maleate21 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): 100 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: $69.10
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,253 providers of this specialty with any payment received $7,667.49 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
- Retina Consultants OF Carolina, PAGreenville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Collin R. Ohning among 48 retina specialist (ophthalmology) physician records in Maryland
Collin R. Ohning is one of 48 retina specialist (ophthalmology) physician records with a practice address in Maryland. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 77% of them.
- NPI issued2015 · 77% of these records are older, 15% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated2015 · median 2002 among the 41 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Maryland
There are 48 retina specialist (ophthalmology) physician records in Maryland.
All 48 in Maryland → Every provider in Greenbelt → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Mohsin Ali, M.D.Greenbelt, MD 207701063855534
- Jason Huang, MDGreenbelt, MD 207701093058059
- Geoffrey Kaplan, M.D.Greenbelt, MD 207701174597140
- Joshua LevinsonGreenbelt, MD 207701982960936
- Mariam Mathai, M.D.Greenbelt, MD 207701346694668
- Sneha Padidam, M.D.Greenbelt, MD 207701356738942
- Reginald Sanders, M.D.Greenbelt, MD 207701922072198
- Daniel Berinstein, M.D.Chevy Chase, MD 208151366416406
Common questions
What is Collin R. Ohning's NPI number?
Collin R. Ohning's National Provider Identifier (NPI) is 1992182794, issued on Apr 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Collin R. Ohning located?
The NPPES record lists a practice address at 7501 Greenway Center Dr # 300, Greenbelt, MD, 20770. Phone: (301) 474-4679. Providers update this record themselves, so call before visiting.
How can I verify Collin R. Ohning's license?
NPPES lists Maryland license number D0087357, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Collin R. Ohning prescribe under Medicare Part D?
In 2024, Collin R. Ohning had 329 Medicare Part D claims for 112 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Collin R. Ohning's MIPS final score?
The 2023 MIPS final score is 100 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.