NPI registry status
Active
2026 NPPES data Optometrist NPI 1629027958 O.D.
Verify on CMS → Timothy Leahy, O.D.
Optometrist in Pittsfield, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
842
Medicare Part D claims · 165 beneficiaries · Optometrist avg: 279
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 84 pts below national avg 83.5 · Penalty band
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Timothy Leahy, O.D. reported a CMS MIPS final score of 0/100 - below the 83.5 national average - and filed 842 Medicare Part D claims in 2024.
- 0/100
- MIPS score · -83 vs avg
- 842
- Part D claims, 2024
- 78%
- generic prescribing
- ≥0th
- pct among measured MIPS (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Timothy Leahy, O.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1629027958), first enumerated 05/05/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 842 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 0/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Timothy Leahy, O.D.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1629027958 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1629027958
- ENUM-LEGACY 2006
- TAX-MEGA 61K Optometrist
- MIPS-LOW 0/100
- RX-LIGHT 842
- BOOK-LIGHT 2,629 in Illinois
- PHOTO-FINISH Austin Anderson, OD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Leahy · this pro… 0
Leahy · this provider
0 MIPS pts
- Kenny Blackston,… 0
Kenny Blackston, O.D.
0 MIPS pts
- Austin Anderson,… 0
Austin Anderson, OD
0 MIPS pts
- Brett Balocca, O… 0
Brett Balocca, OD
0 MIPS pts
- Brett Basden, O.… 0
Brett Basden, O.D.
0 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Timothy Leahy, O.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
0 ≥ 0th percentile 0% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Timothy Leahy, O.D. sits
This provider among optometrist peers
Across the 6,187 optometrist providers who report both Medicare Part D prescribing and a MIPS quality score, Timothy Leahy, O.D. writes more Part D claims than 81% of them and scores higher on MIPS quality than 0% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one optometrist peer from a representative sample of 60; the gold marker is Timothy Leahy, O.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Timothy Leahy, O.D.?
Below national averagePrimary specialty
Optometrist
Medicare Part D claims
842 202% vs specialty avg
MIPS final score
0/100 83.5 pts vs avg
Specialty distribution in Illinois
How Optometrist compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Timothy Leahy, O.D.'s 2023 MIPS final score plotted against the Optometrist national average
- MIPS Final Score
- 0/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1629027958 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 05/05/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Measured-score avg: 83.5
0
Quality
0
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Timothy Leahy, O.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Christina J. Levi O D P C.
Pittsfield, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Timothy Leahy, O.D.. To verify Timothy Leahy, O.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Timothy Leahy, O.D. - brand share 22.0%
Optometrist average
22% brand-name claims vs 78% generic, on 842 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
842
Total Claims
$44K
Total Drug Cost
165
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,218.9
- Total Day Supply
- 33,891
- Brand vs Generic
- 22% brand / 78% generic
- Brand Drug Cost
- $31K
- Generic Drug Cost
- $13K
- Antibiotic Claims
- 31
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 12, 65-74: 66, 75-84: 58, 85+: 29
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Timothy Leahy, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
440 claims
- Brimonidine Tartrate 54
Brimonidine Tartrate
54 claims
- Timolol Maleate 51
Timolol Maleate
51 claims
- Dorzolamide-Timolol 44
Dorzolamide-Timolol
44 claims
- Doxycycline Hyclate 28
Doxycycline Hyclate
28 claims
- Prednisolone Acetate 25
Prednisolone Acetate
25 claims
- Tobramycin-Dexamet… 22
Tobramycin-Dexamethasone
22 claims
- Acetazolamide Er 18
Acetazolamide Er
18 claims
| Drug | Claims |
|---|---|
| Latanoprost | 440 |
| Brimonidine Tartrate | 54 |
| Timolol Maleate | 51 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 44 |
| Doxycycline Hyclate | 28 |
| Prednisolone Acetate | 25 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 22 |
| Acetazolamide Er Acetazolamide | 18 |
| Combigan Brimonidine Tartrate/Timolol | 17 |
| Brimonidine Tartrate-Timolol Brimonidine Tartrate/Timolol | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Timothy Leahy, O.D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Timothy Leahy, O.D.'s 842 claims are above the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Leahy, both outside Illinois so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (0 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Leahy.
One of 2,629 Optometrist providers enrolled in Illinois, 5 are shown here.
Dr. Marvin Aal
O.D.
Chicago, IL
Dr. Russul Abbas
OD
Gurnee, IL
Dr. Sarah Abbott
OD
Park Ridge, IL
Dr. Mahmud Abdallah
OD
Alsip, IL
Nada Abdallah
Deerfield, IL
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Timothy Leahy, O.D.'s specialty? ▼
Timothy Leahy, O.D. specializes in Optometrist and practices in Pittsfield, Illinois. Credentials: O.D..
How much does Timothy Leahy, O.D. prescribe under Medicare Part D? ▼
In 2024, Timothy Leahy, O.D. wrote 842 Medicare Part D claims totaling $44K in drug costs for 165 beneficiaries.
What is Timothy Leahy, O.D.'s Medicare quality score? ▼
Timothy Leahy, O.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Timothy Leahy, O.D. located? ▼
Timothy Leahy, O.D. is located at 201 N MADISON ST, Pittsfield, IL, 62363. Phone: (217) 285-4800.
What is Timothy Leahy, O.D.'s NPI number? ▼
Timothy Leahy, O.D.'s National Provider Identifier (NPI) is 1629027958, issued on 05/05/2006.
Does Timothy Leahy, O.D. prescribe more brand-name or generic drugs? ▼
Timothy Leahy, O.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $31K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Timothy Leahy, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Timothy Leahy, O.D.'s most frequently prescribed drugs include Latanoprost, Brimonidine Tartrate, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Leahy, O.D. accept Medicare? ▼
Timothy Leahy, O.D. appears in CMS Medicare data with 842 Part D claims and 165 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Leahy, O.D.'s credentials? ▼
Timothy Leahy, O.D.'s NPI is 1629027958 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.