Dr. John Michael Mcmahon , DDS
Dentist - General Practice • Jenison, MI
2076 Baldwin St
Jenison, MI 494288772
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. John Mcmahon is listed in NPPES under Dentist - General Practice.
-
NPI assigned on September 12, 2011; this date does not establish years in practice.
-
Published CMS data list 15 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.
-
Published Part D records, 2024:
- Amoxicillin — 15 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 the full table · Guide: How to read Medicare Part D prescriber data
-
Fewer Part D prescriptions than 90% of clinicians listed under Dentist - General Practice in Michigan (2024, 2,011 clinicians with data). Median for this group: 52. Middle half: 27 to 95.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part D prescriptions went from 11 in 2019 to 15 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019–2024.
Practice Location & Contact Primary Location
2076 Baldwin St
Jenison, MI 494288772
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dentist - General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
15 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
$41 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: $1,269.39 across 3 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: $1,200.00 across 1 record.
- Food and Beverage: $69.39 across 2 records.
Reporting-company totals
- DENTSPLY LLC: $1,200.00 across 1 record.
- Dentsply Sirona Inc: $51.07 across 1 record.
- Envista Holdings Corporation: $18.32 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
2011
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.
Compared with the same specialty in Jenison and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 90% of clinicians listed under Dentist - General Practice in Michigan (2024, 2,011 clinicians with data). Median for this group: 52. Middle half: 27 to 95.
Too few clinicians listed under Dentist - General Practice in Jenison have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 90% of clinicians listed under Dentist - General Practice in Michigan (2024, 2,011 clinicians with data). Median for this group: $155. Middle half: $74 to $320.
Too few clinicians listed under Dentist - General Practice in Jenison have Medicare Part D data for 2024 to compare.
13 active clinicians are listed under Dentist - General Practice with a practice address in Jenison, MI (4,095 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Jenison
0% of these 13 clinicians have the CMS telehealth indicator.
0% of these 13 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2019 to 15 in 2024.
- 2019: 11
- 2021: 18
- 2022: 13
- 2023: 13
- 2024: 15
-
30-day fills
30-day fills went from 11 in 2019 to 15 in 2024.
- 2019: 11
- 2021: 18
- 2022: 13
- 2023: 13
- 2024: 15
-
Part D drug cost
Part D drug cost went from $25 in 2019 to $41 in 2024.
- 2019: $25
- 2021: $35
- 2022: $13
- 2023: $43
- 2024: $41
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $12.08 in 2021 to $1,269.39 in 2025.
- 2021: $12.08
- 2022: $175.90
- 2023: $83.31
- 2024: $1,200.00
- 2025: $1,269.39
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 $1,269.39.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| DENTSPLY 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
|
Implant Dentistry | General | $1,200.00 |
| Dentsply Sirona Inc |
Food and Beverage
In-kind items and services
|
Cerec | General | $51.07 |
| Envista Holdings Corporation |
Food and Beverage
In-kind items and services
|
ENDODONTICS | General | $18.32 |
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 | 15 | 76 | $41.21 | 14 |
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: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
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 - General Practice
Doctor of Dental Surgery
Career & Practice History
NPI enumerated September 12, 2011.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Dentist - General Practices in Jenison
- Dr. Daniel Seitz, DDS
- Dr. Douglas Borst, DDS
- Dr. Cristin Zuiderveen, DDS
- Dr. Matthew Lubbers, DDS
- Dr. John Mcmahon, DDS
Mailing Address
2076 Baldwin St
Jenison, MI 494288772
Phone: 6164572710