Who Paid My Doc
Donald Clem
Dentist, Periodontics Fullerton, CA Doctor of Dentistry
NPI 1770673287 CMS profile 352653
220 Laguna Rd, Suite 3, Fullerton, CA 92835
General payments
$38,952
Research payments
$301,780
Ownership & investment interest
$0
Research they led as principal investigator
$135,291
Through program year 2025, Donald Clem of Fullerton, CA is reported in the CMS Open Payments database as having received $38,952 across 88 general payments and $301,780 in research payments paid to them. Separately, studies naming them as principal investigator received $135,291 in research payments, paid to institutions rather than to them.
No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them. The principal-investigator line is research money paid to institutions for studies they led — not to them — and is not added to anything either.
General payments for this record sit in the 99th percentile of Dentist, Periodontics profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
14 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $343 | 9 | |
| 2025 | Research | $35,000 | 1 | |
| 2024 | General | $9,790 | 10 | |
| 2024 | Research | $35,000 | 1 | |
| 2023 | General | $15,877 | 16 | |
| 2023 | Research | $35,000 | 1 | |
| 2022 | General | $906 | 14 | |
| 2022 | Research | $35,397 | 2 | |
| 2021 | General | $499 | 7 | |
| 2021 | Research | $35,386 | 2 | |
| 2020 | General | $5,308 | 8 | |
| 2020 | Research | $35,000 | 1 | |
| 2019 | General | $6,229 | 24 | |
| 2019 | Research | $91,000 | 2 |
Beside peers
- Donald Clem
- Dentist, Periodontics median
- Middle half of Dentist, Periodontics
- National median
In program year 2025, general payments to Donald Clem were reported at $343. Among 2,732 Dentist, Periodontics profiles paid that year, the median was $112 and the middle half received between $42 and $307.
Show as a table
| Year | Donald Clem | Dentist, Periodontics median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $6,229 | $129 | $42–$367 | $163 |
| 2020 | $5,308 | $90 | $35–$265 | $114 |
| 2021 | $499 | $125 | $42–$411 | $132 |
| 2022 | $906 | $123 | $43–$364 | $149 |
| 2023 | $15,877 | $125 | $45–$358 | $160 |
| 2024 | $9,790 | $119 | $42–$350 | $164 |
| 2025 | $343 | $112 | $42–$307 | $169 |
Breakdown
A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.
Prescribing to Medicare patients
Part D · data year 2024 · 5 drugsPart D claims
452
Drug cost
$2,255
Branded share of claims
0%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Amoxicillin | Generic | 198 | $902 | |
| Diflunisal | Generic | 34 | $513 | |
| Ibuprofen | Generic | 160 | $497 | |
| Doxycycline Hyclate | Generic | 18 | $184 | |
| Azithromycin | Generic | 42 | $159 |
Drug cost is what was paid for the drugs at the pharmacy — by Medicare, the patient and others — and is not money to the prescriber. Medicare Part D only: drugs dispensed to Medicare beneficiaries. A drug with fewer than 11 claims for this prescriber is not published, so a missing drug does not mean zero. The medians are for the 110,731 Part D prescribers listed as Dentist; they describe a distribution and say nothing about conduct.
Records
98 reportedEvery payment, record by record
Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.
Other Dentist, Periodontics in California
Aleksander Jovanovic
Dentist, Periodontics · Los Angeles, CA
Chanook Ahn
Dentist, Periodontics · Los Angeles, CA
Neema Bak
Dentist, Periodontics · Tarzana, CA
Pilseong Kim
Dentist, Periodontics · Irvine, CA
Stephen John
Dentist, Periodontics · San Carlos, CA
Oded Bahat
Dentist, Periodontics · Beverly Hills, CA
Related records
Dentist, Periodontics in California
Practitioners in the same specialty and state, ranked by reported value.
All Dentist, Periodontics
Everyone recorded under this specialty, nationwide.
Doctors in California
Every practitioner in the state with a reported payment.
How to read this page
What each amount means, and what it does not mean.
What this means
U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.
An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.
Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.