William Deegan, M.D.
NPI 1982678223 · Ophthalmology Physician · Mc Lean, VA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Deegan, M.D. is a Ophthalmology Physician provider in Mc Lean, VA (NPI 1982678223).
Provider details
- NPI number
- 1982678223
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0047789 (MD)
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
20 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
1,858 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 Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 406 | $101 |
| Imaging of Retina92134 | 346 | $45 |
| Photography of the Retina92250 | 273 | $39 |
| 2d Ultrasound Scan of Eye Tissue and Structures76512 | 173 | $53 |
| Injection of Drug Into Eye67028 | 166 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 137 | $141 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$205 across 2 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)
- 46161 Westlake Dr Ste 300Sterling, VA 20165-5871Phone: (571) 434-2927Fax: (571) 434-0838
Registry dates
- Enumerated
- 2006-02-14
- Last updated
- 2021-04-27
- Certified
- 2021-04-27
Frequently asked questions
- What is William Deegan's NPI number?
- William Deegan's National Provider Identifier (NPI) is 1982678223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Deegan's specialty?
- William Deegan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is William Deegan located?
- William Deegan's practice location on file with NPPES is 1420 Beverly Rd Ste 110, Mc Lean, VA 22101-3700.
- What is William Deegan's phone number?
- The practice phone number listed in the NPPES registry for William Deegan is (571) 378-2236.
- Does William Deegan accept Medicare?
- William Deegan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Deegan's NPI active?
- Yes — William Deegan's NPI (1982678223) is active in the NPPES registry as of the last update on 2021-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.