NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1912439639 MD
Verify on CMS → Christopher Tookey, MD
Family Medicine Physician in Sparta, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
5K
Medicare Part D claims · 300 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Christopher Tookey, MD filed 5,399 Medicare Part D claims in 2023 as a Family Medicine Physician in Sparta, Wisconsin, prescribing 83% generic.
- 5K
- Part D claims, 2023
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥94th
- pct by Part D claim volume (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.
CMS NPPES provider registry desk
NPI 1912439639 · Family Medicine Physician
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1912439639
- ENUM-RECENT 2017
- TAX-MEGA 148K Family Medicine
- RX-MID 5,399
- BOOK-LIGHT 3,587 in Wisconsin
- PHOTO-ENUM Joanna O'Brien · 2017
Christopher Tookey, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,399 ≥ 94th percentile 94% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Christopher Tookey, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Christopher Tookey, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
5,399 58% vs specialty avg
Specialty distribution in Wisconsin
How Family Medicine Physician compares to other specialties among Wisconsin 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 Family Medicine 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).
Practice Address
Provider Details
| NPI | 1912439639 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/31/2017 |
Hospital and facility affiliations
Facilities where Christopher Tookey, 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.
Gundersen Clinic Ltd
Sparta, WI
Gundersen Lutheran Medical Center Inc
La Crosse, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Christopher Tookey, MD - brand share 16.0%
Family Medicine Physician average
16% brand-name claims vs 83% generic, on 5,399 2023 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 2023.
5,399
Total Claims
$706K
Total Drug Cost
300
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,674
- Total Day Supply
- 276,097
- Brand vs Generic
- 16% brand / 83% generic
- Brand Drug Cost
- $597K
- Generic Drug Cost
- $107K
- Opioid Claims
- 148 (2.7% rate)
- Antibiotic Claims
- 77
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 28% female / 72% male
- Age Distribution
- <65: 63, 65-74: 127, 75-84: 78, 85+: 32
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christopher Tookey, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
369 claims
- Omeprazole
Omeprazole
210 claims
- Metoprolol Succinate
Metoprolol Succinate
193 claims
- Lisinopril
Lisinopril
180 claims
- Amlodipine Besylate
Amlodipine Besylate
179 claims
- Trulicity
Trulicity
151 claims
- Gabapentin 134
Gabapentin
134 claims
- Metformin Hcl Er 131
Metformin Hcl Er
131 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 369 |
| Omeprazole | 210 |
| Metoprolol Succinate | 193 |
| Lisinopril | 180 |
| Amlodipine Besylate | 179 |
| Trulicity Dulaglutide | 151 |
| Gabapentin | 134 |
| Metformin Hcl Er Metformin Hcl | 131 |
| Tamsulosin Hcl | 129 |
| Levothyroxine Sodium | 91 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Christopher Tookey, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Christopher Tookey, MD's 5,399 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Tookey, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2017)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Tookey.
One of 3,587 Family Medicine Physician providers enrolled in Wisconsin, 5 are shown here.
Dr. Ghudran Abdulal
MD
New Berlin, WI
Dr. Vanessa Abejuela-Matt
D.O.
Mount Pleasant, WI
Dr. Benjamin Abeyta
M.D.
Wauwatosa, WI
Dr. Emily Abeyta
MD
Waukesha, WI
Dr. Islam Abo Al Nadie
MD
Milwaukee, WI
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Christopher Tookey, MD's specialty? ▼
Christopher Tookey, MD specializes in Family Medicine Physician and practices in Sparta, Wisconsin. Credentials: MD.
How much does Christopher Tookey, MD prescribe under Medicare Part D? ▼
In 2023, Christopher Tookey, MD wrote 5,399 Medicare Part D claims totaling $706K in drug costs for 300 beneficiaries.
Where is Christopher Tookey, MD located? ▼
Christopher Tookey, MD is located at 1111 W WISCONSIN ST, Sparta, WI, 54656. Phone: (608) 269-6731.
What is Christopher Tookey, MD's NPI number? ▼
Christopher Tookey, MD's National Provider Identifier (NPI) is 1912439639, issued on 03/31/2017.
Does Christopher Tookey, MD prescribe more brand-name or generic drugs? ▼
Christopher Tookey, MD's prescribing is 16% brand-name and 83% generic drugs by claim count, with $597K in brand drug costs.
Does Christopher Tookey, MD prescribe opioids? ▼
Yes, Christopher Tookey, MD had 148 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Christopher Tookey, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Tookey, MD's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Tookey, MD accept Medicare? ▼
Christopher Tookey, MD appears in CMS Medicare data with 5,399 Part D claims and 300 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Tookey, MD's credentials? ▼
Christopher Tookey, MD's NPI is 1912439639 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
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 May 2026.