NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1770112385 DO
Verify on CMS → John Tillack, DO
Family Medicine Physician in Branson, 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 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
1K
Medicare Part D claims · 126 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 15% 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
John Tillack, DO filed 1,193 Medicare Part D claims in 2023 as a Family Medicine Physician in Branson, Missouri, prescribing 84% generic.
- 1K
- Part D claims, 2023
- 84%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥77th
- 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 1770112385 · Family Medicine Physician
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1770112385
- ENUM-RECENT 2020
- TAX-MEGA 148K Family Medicine
- RX-MID 1,193
- BOOK-LIGHT 2,881 in Missouri
- PHOTO-ENUM Ryan Chen · 2020
John Tillack, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,193 ≥ 77th percentile 77% 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)
John Tillack, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 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 John Tillack, DO?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
1,193 65% vs specialty avg
Specialty distribution in Missouri
How Family Medicine 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 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 | 1770112385 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 04/06/2020 |
Hospital and facility affiliations
Facilities where John Tillack, DO 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.
According to CMS billing records, John Tillack, DO is affiliated with 3 Medicare-billing facilities.
Lester E Cox Medical Centers
Ozark, MO
Lester E Cox Medical Centers
Springfield, MO
Skaggs Community Hospital Association
Forsyth, 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).
Brand vs generic prescribing mix · Typical
John Tillack, DO - brand share 15.0%
Family Medicine Physician average
15% brand-name claims vs 84% generic, on 1,193 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.
1,193
Total Claims
$127K
Total Drug Cost
126
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,770
- Total Day Supply
- 49,372
- Brand vs Generic
- 15% brand / 84% generic
- Brand Drug Cost
- $110K
- Generic Drug Cost
- $17K
- Antibiotic Claims
- 43
Patient Demographics
- Average Patient Age
- 67.9 years
- Avg HCC Risk Score
- 1.99
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 41, 65-74: 44, 75-84: 30, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Tillack, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
78 claims
- Atorvastatin Calcium
Atorvastatin Calcium
62 claims
- Omeprazole
Omeprazole
45 claims
- Amlodipine Besylate
Amlodipine Besylate
42 claims
- Pantoprazole Sodium
Pantoprazole Sodium
40 claims
- Gabapentin
Gabapentin
38 claims
- Escitalopram Oxalate 30
Escitalopram Oxalate
30 claims
- Hydrochlorothiazide 28
Hydrochlorothiazide
28 claims
| Drug | Claims |
|---|---|
| Lisinopril | 78 |
| Atorvastatin Calcium | 62 |
| Omeprazole | 45 |
| Amlodipine Besylate | 42 |
| Pantoprazole Sodium | 40 |
| Gabapentin | 38 |
| Escitalopram Oxalate | 30 |
| Hydrochlorothiazide | 28 |
| Losartan Potassium | 28 |
| Trulicity Dulaglutide | 27 |
* 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 John Tillack, DO 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
John Tillack, DO's 1,193 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Tillack, both outside Missouri so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Tillack.
One of 2,881 Family Medicine Physician providers enrolled in Missouri, 5 are shown here.
Dr. Mohammad Abbas
DO
Kirksville, MO
Dr. Karam Abdelmasih
MD, AP
Festus, MO
Dr. Afsheen Abdullah Patel
MD
Lees Summit, MO
Dr. Christopher Abercrombie
DO
Arnold, MO
Dr. Avery Abernathy
D.O.
Kansas City, MO
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Tillack, DO's specialty? ▼
John Tillack, DO specializes in Family Medicine Physician and practices in Branson, Missouri. Credentials: DO.
How much does John Tillack, DO prescribe under Medicare Part D? ▼
In 2023, John Tillack, DO wrote 1,193 Medicare Part D claims totaling $127K in drug costs for 126 beneficiaries.
Where is John Tillack, DO located? ▼
John Tillack, DO is located at 525 BRANSON LANDING BLVD STE 201A, Branson, MO, 65616. Phone: (417) 335-7128.
What is John Tillack, DO's NPI number? ▼
John Tillack, DO's National Provider Identifier (NPI) is 1770112385, issued on 04/06/2020.
Does John Tillack, DO prescribe more brand-name or generic drugs? ▼
John Tillack, DO's prescribing is 15% brand-name and 84% generic drugs by claim count, with $110K in brand drug costs.
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 John Tillack, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, John Tillack, DO's most frequently prescribed drugs include Lisinopril, Atorvastatin Calcium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Tillack, DO accept Medicare? ▼
John Tillack, DO appears in CMS Medicare data with 1,193 Part D claims and 126 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Tillack, DO's credentials? ▼
John Tillack, DO's NPI is 1770112385 with credentials DO. 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.