Joseph Kiernan, MD
NPI 1669429973 · Ophthalmology Physician · Buffalo Grove, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Kiernan, MD is a Ophthalmology Physician provider in Buffalo Grove, IL (NPI 1669429973).
Provider details
- NPI number
- 1669429973
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036061294 (IL)
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
20 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
7,437 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) |
|---|---|---|
| Photography of Content of Eyes92285 | 1,688 | $23 |
| Photography of the Retina92250 | 1,093 | $34 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,029 | $131 |
| Exam of Visual Field With Extended Testing92083 | 517 | $64 |
| Imaging of Retina92134 | 484 | $38 |
| Established Patient Problem Focused Exam of Visual System92012 | 475 | $90 |
| Established Patient Complete Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 880 | 225 |
| Timolol Maleate | 485 | 185 |
| Brimonidine Tartrate | 218 | 103 |
| Prednisolone Acetate | 210 | 139 |
| Ofloxacin | 109 | 96 |
| Ketorolac Tromethamine | 104 | 88 |
| Bimatoprostbrand: Lumigan | 100 | 22 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 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
- 2006-05-30
- Last updated
- 2021-12-22
- Certified
- 2021-12-22
Frequently asked questions
- What is Joseph Kiernan's NPI number?
- Joseph Kiernan's National Provider Identifier (NPI) is 1669429973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Kiernan's specialty?
- Joseph Kiernan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Kiernan located?
- Joseph Kiernan's practice location on file with NPPES is 1120-C W Lake Cook Rd, Buffalo Grove, IL 60089.
- What is Joseph Kiernan's phone number?
- The practice phone number listed in the NPPES registry for Joseph Kiernan is (847) 459-6060.
- Does Joseph Kiernan accept Medicare?
- Joseph Kiernan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Kiernan's NPI active?
- Yes — Joseph Kiernan's NPI (1669429973) is active in the NPPES registry as of the last update on 2021-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.