Collin Ohning
NPI 1992182794 · Retina Specialist (Ophthalmology) Physician · Greenbelt, MD
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Collin Ohning is a Retina Specialist (Ophthalmology) Physician provider in Greenbelt, MD (NPI 1992182794).
Provider details
- NPI number
- 1992182794
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- MD046964 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
5,933 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Imaging of Retina92134 | 2,236 | $37 |
| Injection of Drug Into Eye67028 | 1,525 | $114 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,187 | $85 |
| Established Patient Complete Exam of Visual System92014 | 805 | $116 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 135 | $154 |
| Photography of the Retina92250 | 17 | $33 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 103 | 62 |
| Ofloxacin | 48 | 43 |
| Latanoprost | 29 | 13 |
| Ketorolac Tromethamine | 28 | 14 |
| Brimonidine Tartrate | 24 | 12 |
| Timolol Maleate | 21 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 15 | — |
| Bromfenac Sodium | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$69 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 7501 Greenway Center Dr Ste 300Greenbelt, MD 20770-3514Phone: (301) 474-4679Fax: (301) 474-7182
Registry dates
- Enumerated
- 2015-04-30
- Last updated
- 2020-01-08
- Certified
- 2020-01-08
Frequently asked questions
- What is Collin Ohning's NPI number?
- Collin Ohning's National Provider Identifier (NPI) is 1992182794, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Collin Ohning's specialty?
- Collin Ohning is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Collin Ohning located?
- Collin Ohning's practice location on file with NPPES is 7501 Greenway Center Dr # 300, Greenbelt, MD 20770-3514.
- What is Collin Ohning's phone number?
- The practice phone number listed in the NPPES registry for Collin Ohning is (301) 474-4679.
- Does Collin Ohning accept Medicare?
- Collin Ohning is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Collin Ohning's NPI active?
- Yes — Collin Ohning's NPI (1992182794) is active in the NPPES registry as of the last update on 2020-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.