Dr. Jonathan Jeffrey Karch , DDS
Dentist • Johnston, IA
5495 Nw 100th St
Johnston, IA 50131
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on May 27, 2014; this date does not establish years in practice.
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Published CMS data list 113 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amoxicillin — 45 prescription fills, including refills.
- Chlorhexidine Gluconate — 38 prescription fills, including refills.
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 16 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 80% of clinicians listed under Dentist in Iowa (2024, 320 clinicians with data). Median for this group: 44. Middle half: 25 to 87.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 11 in 2020 to 113 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
5495 Nw 100th St
Johnston, IA 50131
What Public CMS Data Show
Dentist: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
113 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$455 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $1,296.57 across 9 records.
By nature of payment
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $1,021.50 across 1 record.
- Food and Beverage: $190.28 across 7 records.
- Gift: $84.79 across 1 record.
Reporting-company totals
- Straumann USA LLC: $1,213.47 across 7 records.
- Align Technology, Inc.: $68.96 across 1 record.
- Dentsply Sirona Inc: $14.14 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2014
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Karch has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Karch as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Johnston and Iowa
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Dentist in Iowa (2024, 320 clinicians with data). Median for this group: 44. Middle half: 25 to 87.
Too few clinicians listed under Dentist in Johnston have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Dentist in Iowa (2024, 320 clinicians with data). Median for this group: $122. Middle half: $64 to $248.
Too few clinicians listed under Dentist in Johnston have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Dentist with a practice address in Johnston, IA (726 in Iowa).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2020 to 113 in 2024.
- 2020: 11
- 2021: 37
- 2022: 60
- 2023: 53
- 2024: 113
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30-day fills
30-day fills went from 11 in 2020 to 113 in 2024.
- 2020: 11
- 2021: 37
- 2022: 60
- 2023: 53
- 2024: 113
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Part D drug cost
Part D drug cost went from $55 in 2020 to $455 in 2024.
- 2020: $55
- 2021: $168
- 2022: $281
- 2023: $185
- 2024: $455
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $741.99 in 2021 to $1,296.57 in 2025.
- 2021: $741.99
- 2022: $400.50
- 2023: $2,005.47
- 2024: $724.92
- 2025: $1,296.57
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $1,296.57.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Straumann USA LLC |
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
|
— | General | $1,021.50 |
| Straumann USA LLC |
Gift
Cash or cash equivalent
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— | General | $84.79 |
| Align Technology, Inc. |
Food and Beverage
Cash or cash equivalent
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Invisalign | General | $68.96 |
| Straumann USA LLC |
Food and Beverage
Cash or cash equivalent
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— | General | $31.37 |
| Straumann USA LLC |
Food and Beverage
Cash or cash equivalent
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— | General | $26.88 |
| Straumann USA LLC |
Food and Beverage
Cash or cash equivalent
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— | General | $23.69 |
| Straumann USA LLC |
Food and Beverage
Cash or cash equivalent
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— | General | $16.00 |
| Dentsply Sirona Inc |
Food and Beverage
In-kind items and services
|
CAVITRON | General | $14.14 |
| Straumann USA LLC |
Food and Beverage
Cash or cash equivalent
|
— | General | $9.24 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amoxicillin | Amoxicillin | 45 | 315 | $126.65 | 38 |
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 38 | 595 | $134.01 | 25 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 16 | 71 | $82.79 | 14 |
| Methylprednisolone | Methylprednisolone | 14 | 108 | $111.81 | 13 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - DENTIST
I20151207001662
TX
1254631658
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
5495 Nw 100th St
Johnston, IA 50131
Phone: 5153311600
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dentist
Doctor of Dental Surgery
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 5495 NW 100TH ST, JOHNSTON, IA 50131 (Tel: 5153311600)
Registered at 5495 NW 100TH ST, JOHNSTON, IA 501314808 (Tel: 5153311600)
Dentist (license number reported to NPPES: IA DDS-09288)
NPI status registered as active in NPPES database
Registered at 4315 DIPLOMACY DR, ANCHORAGE, AK 995085926 (Tel: 9075632662)
Registered at 4501 DIPLOMACY DR, ATTN: FINANCE/PROVIDER ENROLLMENT, ANCHORAGE, AK 995085919 (Tel: 9077292000)
Recorded as JONATHAN KARCH, D.D.S.
Dentist (license number reported to NPPES: AK DEND1574)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentists in Johnston
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Mailing Address
5495 Nw 100th St
Johnston, IA 501314808
Phone: 5153311600