Douglas Bull, M.D.
NPI 1083621544 · Ophthalmology Physician · Reedsburg, WI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Bull, M.D. is a Ophthalmology Physician provider in Reedsburg, WI (NPI 1083621544).
Provider details
- NPI number
- 1083621544
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 83393-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,102 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) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 316 | $117 |
| Established Patient Problem Focused Exam of Visual System92012 | 169 | $82 |
| Imaging of Optic Nerve92133 | 93 | $34 |
| Imaging of Retina92134 | 77 | $37 |
| Exam of Visual Field With Extended Testing92083 | 67 | $58 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 61 | $508 |
| Photography of the Retina |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 628 | 193 |
| Timolol Maleate | 258 | 91 |
| Bimatoprostbrand: Lumigan | 209 | 59 |
| Prednisolone Acetate | 152 | 109 |
| Ketorolac Tromethamine | 137 | 86 |
| Moxifloxacin Hclbrand: Moxifloxacin | 104 | 76 |
| Travoprost | 99 | 30 |
| Brimonidine Tartrate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 1 record (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
Registry dates
- Enumerated
- 2006-08-01
- Last updated
- 2024-11-06
- Certified
- 2024-11-06
Frequently asked questions
- What is Douglas Bull's NPI number?
- Douglas Bull's National Provider Identifier (NPI) is 1083621544, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Bull's specialty?
- Douglas Bull is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Bull located?
- Douglas Bull's practice location on file with NPPES is 2000 N Dewey Ave, Reedsburg, WI 53959-1049.
- What is Douglas Bull's phone number?
- The practice phone number listed in the NPPES registry for Douglas Bull is (085) 246-4876.
- Does Douglas Bull accept Medicare?
- Douglas Bull is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Bull's NPI active?
- Yes — Douglas Bull's NPI (1083621544) is active in the NPPES registry as of the last update on 2024-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.