NPI registry status
Active
2026 NPPES data Orthopaedic Foot and Ankle Surgery Physician NPI 1346683059 MD
Verify on CMS → Timothy Lonergan, MD
Orthopaedic Foot and Ankle Surgery Physician in Washington, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 678 in Orthopaedic Foot and Ankle Surgery Physician, 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
372
Medicare Part D claims · 168 beneficiaries · Orthopaedic Foot and Ankle Surgery Physician avg: 218
Industry payments
$2.1K
24 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Timothy Lonergan, MD filed 372 Medicare Part D claims in 2023 as a Orthopaedic Foot and Ankle Surgery Physician in Washington, Missouri.
- 372
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Timothy Lonergan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
372 Top 43% higher than 57% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Timothy Lonergan, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Timothy Lonergan, MD?
Quality data not reportedPrimary specialty
Orthopaedic Foot and Ankle Surgery Physician
Medicare Part D claims
372 71% vs specialty avg
Specialty distribution in Missouri
How Orthopaedic Foot and Ankle Surgery Physician compares to other specialties among Missouri providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Orthopaedic Foot and Ankle Surgery Physician. Verify directly:
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).
Timothy Lonergan, MD appears in the CMS NPPES registry as a Orthopaedic Foot and Ankle Surgery Physician provider holding MD credentials at 901 PATIENTS FIRST DR STE 1300, Washington, MO, 63090, with a listed phone of (636) 239-9011. NPI 1346683059 was issued on 04/11/2013.
Medicare Part D records for calendar year 2023 show 372 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 37.6%.
Orthopaedic Foot and Ankle Surgery Physician is a narrow specialty nationwide, with 678 enrolled providers across 51 states and an average of 218 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1346683059 |
|---|---|
| Specialty | Orthopaedic Foot and Ankle Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/11/2013 |
Hospital and facility affiliations
Facilities where Timothy Lonergan, MD 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.
Mercy Clinic Surgical Specialists LLC
Washington, MO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Timothy Lonergan, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.1K
Largest payer
Arthrex, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
372
Total Claims
$4K
Total Drug Cost
168
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 401
- Total Day Supply
- 5,468
- Brand Drug Cost
- $0
- Generic Drug Cost
- $4K
- Opioid Claims
- 140 (37.6% rate)
- Antibiotic Claims
- 57
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Timothy Lonergan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
87 claims
- Meloxicam
Meloxicam
63 claims
- Promethazine Hcl
Promethazine Hcl
36 claims
- Sulfamethoxazole-T… 30
Sulfamethoxazole-Trimethoprim
30 claims
- Tramadol Hcl 30
Tramadol Hcl
30 claims
- Ketorolac Trometha… 21
Ketorolac Tromethamine
21 claims
- Methylprednisolone 17
Methylprednisolone
17 claims
- Oxycodone-Acetamin… 16
Oxycodone-Acetaminophen
16 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 87 |
| Meloxicam | 63 |
| Promethazine Hcl | 36 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 30 |
| Tramadol Hcl | 30 |
| Ketorolac Tromethamine | 21 |
| Methylprednisolone | 17 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Orthopaedic Foot and Ankle Surgery Physician in MO →
All providers in Missouri →
Compare specialties →
Orthopaedic Foot and Ankle Surgery Physician Overview
How Timothy Lonergan, MD fits within the Orthopaedic Foot and Ankle Surgery Physician landscape nationally.
678
Orthopaedic Foot and Ankle Surgery Physician Providers in US
51
States with Orthopaedic Foot and Ankle Surgery Physician
218
Avg Claims per Provider
Timothy Lonergan, MD's 372 claims are above the specialty average of 218.
Nearby Orthopaedic Foot and Ankle Surgery Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Lonergan.
Dr. Timothy Badwey
M.D.
Kansas City, MO
Dr. Aliasgar Dalal
M.D.
Saint Louis, MO
Dr. Kyle Fiala
DPM
Columbia, MO
Dr. Richard Helfrey
D.O.
Wentzville, MO
Dr. David Hicks
M.D.
Springfield, MO
Compare Orthopaedic Foot and Ankle Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Orthopaedic Foot and Ankle Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Missouri
Frequently Asked Questions
What is Timothy Lonergan, MD's specialty? ▼
Timothy Lonergan, MD specializes in Orthopaedic Foot and Ankle Surgery Physician and practices in Washington, Missouri. Credentials: MD.
How much does Timothy Lonergan, MD prescribe under Medicare Part D? ▼
In 2023, Timothy Lonergan, MD wrote 372 Medicare Part D claims totaling $4K in drug costs for 168 beneficiaries.
Where is Timothy Lonergan, MD located? ▼
Timothy Lonergan, MD is located at 901 PATIENTS FIRST DR STE 1300, Washington, MO, 63090. Phone: (636) 239-9011.
What is Timothy Lonergan, MD's NPI number? ▼
Timothy Lonergan, MD's National Provider Identifier (NPI) is 1346683059, issued on 04/11/2013.
Does Timothy Lonergan, MD prescribe opioids? ▼
Yes, Timothy Lonergan, MD had 140 opioid claims in 2023 with an opioid prescribing rate of 37.6%.
How many Orthopaedic Foot and Ankle Surgery Physician providers are there in the US? ▼
There are 678 Orthopaedic Foot and Ankle Surgery Physician providers across 51 states in the US. The average Orthopaedic Foot and Ankle Surgery Physician provider writes 218 Medicare Part D claims per year.
What drugs does Timothy Lonergan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Timothy Lonergan, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Meloxicam, Promethazine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Lonergan, MD accept Medicare? ▼
Timothy Lonergan, MD appears in CMS Medicare data with 372 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Lonergan, MD's credentials? ▼
Timothy Lonergan, MD's NPI is 1346683059 with credentials MD. 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.