Mary Mehaffey, M.D.
NPI 1649269580 · Ophthalmology Physician · Wheaton, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Mehaffey, M.D. is a Ophthalmology Physician provider in Wheaton, IL (NPI 1649269580).
Provider details
- NPI number
- 1649269580
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036-099095 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
441 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 223 | $132 |
| Imaging of Optic Nerve92133 | 78 | $37 |
| Imaging of Retina92134 | 63 | $42 |
| Exam of Visual Field With Extended Testing92083 | 52 | $67 |
| Established Patient Problem Focused Exam of Visual System92012 | 25 | $94 |
Typical Medicare-allowed amounts for these services range $37–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 320 | 100 |
| Timolol Maleate | 100 | 40 |
| Bimatoprostbrand: Lumigan | 58 | 19 |
| Brimonidine Tartratebrand: Alphagan P | 25 | — |
| Tafluprost/Pfbrand: Tafluprost | 23 | — |
| Latanoprostene Bunodbrand: Vyzulta | 20 | — |
| Dorzolamide Hcl | 18 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-13
- Last updated
- 2024-08-26
- Certified
- 2024-08-26
Frequently asked questions
- What is Mary Mehaffey's NPI number?
- Mary Mehaffey's National Provider Identifier (NPI) is 1649269580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Mehaffey's specialty?
- Mary Mehaffey is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Mehaffey located?
- Mary Mehaffey's practice location on file with NPPES is 2015 N Main St, Wheaton, IL 60187-3152.
- What is Mary Mehaffey's phone number?
- The practice phone number listed in the NPPES registry for Mary Mehaffey is (630) 668-8250.
- Does Mary Mehaffey accept Medicare?
- Mary Mehaffey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Mehaffey's NPI active?
- Yes — Mary Mehaffey's NPI (1649269580) is active in the NPPES registry as of the last update on 2024-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.