# Drug Controlled Substance Researcher Registration in Washington — 298 active credentials

> Every active Drug Controlled Substance Researcher Registration credential in Washington State: how many there are, when they expire, and how to check one by its number. Department of Health data, collected 2026-08-20.

## Drug Controlled Substance Researcher Registration

Washington State holds **298** active credentials of this type — 0.1% of every active health care credential in the state. Here is what that number is made of, and how to check one.

### What kind of credential this is

A **Drug Controlled Substance Researcher Registration** is a **Registration** —
the lightest of the three main forms — the state records who is doing the work. A registration is not a statement that the holder was examined the way a licence-holder was, and the difference matters to an employer.

That word is not a formality. Washington issues
74,135 active credentials in this form across the
state, and it decides what the holder may do without someone else’s
supervision. [How a registration
differs from the others](/credential/registration.md).

### When these credentials expire

Washington renews on the holder’s birthday, so these 298 expiry dates are spread right across the calendar rather than falling together. By year:

| Expires in | Active credentials | Share |
|---|---|---|
| 2027 | 298 | 100.0% |

### How long these holders have been credentialled

The oldest Drug Controlled Substance Researcher Registration credential still active in Washington was first issued in **2001**. 95 of the 298 were issued in 2024 or later — 31.9% of the profession is that new.

| First issued in | Active credentials | Share |
|---|---|---|
| 2026 | 21 | 7.0% |
| 2025 | 33 | 11.1% |
| 2024 | 41 | 13.8% |
| 2023 | 28 | 9.4% |
| 2022 | 12 | 4.0% |
| 2021 | 23 | 7.7% |
| 2020 | 12 | 4.0% |
| 2019 | 15 | 5.0% |
| 2018 | 10 | 3.4% |
| 2017 | 6 | 2.0% |
| 2016 | 8 | 2.7% |
| 2015 | 20 | 6.7% |

### The disciplinary flag

None of the 298 active credentials of this type carries a disciplinary flag in the Department’s published file.

### Do not let the date pass

298 credentials of this type are active in Washington. Washington renews most of them on the holder’s birthday, every year or every two years, and continuing-education hours have to be done before that date — not after. Leave your details and we will tell you when yours is close, and pass your request for continuing-education hours to providers who teach for this credential.

We take no commission and we vouch for no training provider. We have no arrangement with any provider today — we are collecting these requests in order to go and find them. [What we do with this](/privacy.md).

### Some of the 298 holders

Named as the Department of Health holds them, and limited to 140 rows — the full set is in the [search](/search.md), by number or by surname.

*Active Drug Controlled Substance Researcher Registration credentials*

| Name, as the Department holds it | Credential number | First issued | Expires |
|---|---|---|---|
| Aaron Keith Olson | [DRRS.FX.60459392](/search.md) | 2014 | 2027 |
| Adrian Edward Rice | [DRRS.FX.61173192](/search.md) | 2021 | 2027 |
| Adrian Martin Piliponsky | [DRRS.FX.61546316](/search.md) | 2024 | 2027 |
| Aguan D Wei | [DRRS.FX.60465541](/search.md) | 2014 | 2027 |
| Ajay Kumar Dhaka | [DRRS.FX.60103340](/search.md) | 2009 | 2027 |
| Alan Douglas Degenhart | [DRRS.FX.61460261](/search.md) | 2023 | 2027 |
| Alexander Gragerov | [DRRS.FX.60330498](/search.md) | 2013 | 2027 |
| Alexis Lee Kaushansky | [DRRS.FX.61593267](/search.md) | 2024 | 2027 |
| Alice Hawley Berger | [DRRS.FX.60748944](/search.md) | 2017 | 2027 |
| Amber Nolan Munn | [DRRS.FX.61592205](/search.md) | 2024 | 2027 |
| Amy Leigh Orsborn | [DRRS.FX.61013923](/search.md) | 2020 | 2027 |
| Andras Heczey | [DRRS.FX.70061761](/search.md) | 2025 | 2027 |
| Andre Michael Lieber | [DRRS.FX.60239359](/search.md) | 2011 | 2027 |
| Andres Gallenero Grandea | [DRRS.FX.61343482](/search.md) | 2022 | 2027 |
| Andrew Atwell Oberst | [DRRS.FX.60560761](/search.md) | 2015 | 2027 |
| Andrew Caleb Hsieh | [DRRS.FX.60530935](/search.md) | 2015 | 2027 |
| Andrew Joseph Burich | [DRRS.FX.60141656](/search.md) | 2010 | 2027 |
| Andrew Thomas McGuire | [DRRS.FX.60806136](/search.md) | 2018 | 2027 |
| Andy Yi-an Shih | [DRRS.FX.60916627](/search.md) | 2018 | 2027 |
| Andy Yi-an Shih | [DRRS.FX.70022506](/search.md) | 2025 | 2027 |
| Angela Marie Henricks | [DRRS.FX.61159807](/search.md) | 2021 | 2027 |
| Anitha K Pasupathy | [DRRS.FX.00058973](/search.md) | 2007 | 2027 |
| Anna Kathleen Gillespie | [DRRS.FX.61360252](/search.md) | 2023 | 2027 |
| Anthony Cedric N. Rongvaux | [DRRS.FX.60647971](/search.md) | 2016 | 2027 |
| Anthony Lee Back | [DRRS.FX.61157162](/search.md) | 2021 | 2027 |
| Ashley Michael Vaughan | [DRRS.FX.61683179](/search.md) | 2025 | 2027 |
| Azadeh Yazdan-Shahmorad | [DRRS.FX.60879469](/search.md) | 2018 | 2027 |
| Azadeh Yazdan-Shahmorad | [DRRS.FX.61682941](/search.md) | 2025 | 2027 |
| Benjamin Henry Gern | [DRRS.FX.61615320](/search.md) | 2024 | 2027 |
| Benjamin Joseph Vierra | [DRRS.FX.61402185](/search.md) | 2023 | 2027 |
| Benjamin Solomon Freedman | [DRRS.FX.60579194](/search.md) | 2015 | 2027 |
| Bertrand Clarke William Tanner | [DRRS.FX.60567173](/search.md) | 2015 | 2027 |
| Blair Elizabeth Armistead | [DRRS.FX.70049519](/search.md) | 2025 | 2027 |
| Brandon K Hadland | [DRRS.FX.61476579](/search.md) | 2023 | 2027 |
| Brian G Till | [DRRS.FX.60707404](/search.md) | 2017 | 2027 |
| Brock Jamison Grill | [DRRS.FX.61106433](/search.md) | 2020 | 2027 |
| Buddy Dennis Ratner | [DRRS.FX.00057473](/search.md) | 2002 | 2027 |
| Calvin Fries | [DRRS.FX.70106495](/search.md) | 2026 | 2027 |
| Carol H Miao | [DRRS.FX.61556361](/search.md) | 2024 | 2027 |
| Catherine Bianca Carbone | [DRRS.FX.61649687](/search.md) | 2025 | 2027 |
| Cecilia Maria Giachelli | [DRRS.FX.60323260](/search.md) | 2013 | 2027 |
| Charles Chavkin | [DRRS.FX.61520074](/search.md) | 2024 | 2027 |
| Charles Tignor Robbins | [DRRS.FX.60651914](/search.md) | 2016 | 2027 |
| Christian L Roth | [DRRS.FX.61095698](/search.md) | 2021 | 2027 |
| Christina Termini | [DRRS.FX.61434797](/search.md) | 2023 | 2027 |
| Christof Koch | [DRRS.FX.61074836](/search.md) | 2020 | 2027 |
| Christoph Paul Hofstetter | [DRRS.FX.70005342](/search.md) | 2025 | 2027 |
| Christopher J Davis | [DRRS.FX.60476116](/search.md) | 2014 | 2027 |
| Chung Yiu Jonathan Tang | [DRRS.FX.61580033](/search.md) | 2024 | 2027 |
| Claudia Marcela Moreno | [DRRS.FX.60990070](/search.md) | 2019 | 2027 |
| Corinne Summers | [DRRS.FX.61523957](/search.md) | 2024 | 2027 |
| Cyrus Michael Ghajar | [DRRS.FX.60517805](/search.md) | 2015 | 2027 |
| Cyrus Michael Ghajar | [DRRS.FX.70061765](/search.md) | 2025 | 2027 |
| Damon Theron Page | [DRRS.FX.61471684](/search.md) | 2024 | 2027 |
| Dan Fu | [DRRS.FX.70115642](/search.md) | 2026 | 2027 |
| Daniel Brewster Stetson | [DRRS.FX.70108007](/search.md) | 2026 | 2027 |
| Danielle Patricia Johnson Erickson | [DRRS.FX.61205057](/search.md) | 2021 | 2027 |
| David James Perkel | [DRRS.FX.60922258](/search.md) | 2019 | 2027 |
| David James Rossi | [DRRS.FX.60625123](/search.md) | 2017 | 2027 |
| David Jeffrey Rawlings | [DRRS.FX.61177384](/search.md) | 2021 | 2027 |
| David Joseph Marcinek | [DRRS.FX.60530139](/search.md) | 2015 | 2027 |
| David Meyer | [DRRS.FX.70057833](/search.md) | 2026 | 2027 |
| David Paul MacPherson | [DRRS.FX.60406557](/search.md) | 2013 | 2027 |
| David Paxton Daberkow | [DRRS.FX.61403341](/search.md) | 2023 | 2027 |
| David Woolven Raible | [DRRS.FX.61292692](/search.md) | 2022 | 2027 |
| Dean Yoshimasa Maeda | [DRRS.FX.61364683](/search.md) | 2022 | 2027 |
| Deborah Lynn Fuller | [DRRS.FX.60877063](/search.md) | 2018 | 2027 |
| Devasena Ponnalagu | [DRRS.FX.61512054](/search.md) | 2024 | 2027 |
| Devra Jeanne Olson | [DRRS.FX.70057507](/search.md) | 2026 | 2027 |
| Donghoon Lee | [DRRS.FX.60565576](/search.md) | 2015 | 2027 |
| Douglas Benjamin Weibel | [DRRS.FX.70074211](/search.md) | 2026 | 2027 |
| Douglas William Wacker | [DRRS.FX.61554411](/search.md) | 2024 | 2027 |
| Edward Kenneth Johnson | [DRRS.FX.70079502](/search.md) | 2025 | 2027 |
| Edward Sebastian Lein | [DRRS.FX.70135634](/search.md) | 2026 | 2027 |
| Elizabeth Ann Nance | [DRRS.FX.60634120](/search.md) | 2016 | 2027 |
| Elizabeth Rachel Lawlor | [DRRS.FX.61140293](/search.md) | 2021 | 2027 |
| Elizabeth Rose Glenn | [DRRS.FX.61554628](/search.md) | 2024 | 2027 |
| Emily Qualls Creekmore | [DRRS.FX.61177412](/search.md) | 2021 | 2027 |
| Eric Charles Holland | [DRRS.FX.60422110](/search.md) | 2013 | 2027 |
| Eva Corey | [DRRS.FX.60565659](/search.md) | 2015 | 2027 |
| Eva Szentirmai | [DRRS.FX.60094033](/search.md) | 2009 | 2027 |
| Feini Qu | [DRRS.FX.61509119](/search.md) | 2024 | 2027 |
| Feng Cao | [DRRS.FX.70097951](/search.md) | 2026 | 2027 |
| Garret Daniel Stuber | [DRRS.FX.60923616](/search.md) | 2019 | 2027 |
| Gary Allen Wayman | [DRRS.FX.60382281](/search.md) | 2013 | 2027 |
| Geoffrey Roger Hill | [DRRS.FX.60887789](/search.md) | 2018 | 2027 |
| Geoffrey Roger Hill | [DRRS.FX.61106547](/search.md) | 2020 | 2027 |
| Gerardo Maula Castillo | [DRRS.FX.60990958](/search.md) | 2019 | 2027 |
| Giuseppe Giannotti | [DRRS.FX.61378965](/search.md) | 2023 | 2027 |
| Gregory D Horwitz | [DRRS.FX.00059129](/search.md) | 2007 | 2027 |
| Guosheng Li | [DRRS.FX.70008636](/search.md) | 2025 | 2027 |
| Hans-Peter Kiem | [DRRS.FX.60549713](/search.md) | 2015 | 2027 |
| Hans-Peter Kiem | [DRRS.FX.60932479](/search.md) | 2019 | 2027 |
| Haolong Li | [DRRS.FX.61639058](/search.md) | 2025 | 2027 |
| Harold Steven White | [DRRS.FX.70146766](/search.md) | 2026 | 2027 |
| Heather Leigh Herd Gustafson | [DRRS.FX.60978020](/search.md) | 2026 | 2027 |
| Heather Leigh Herd Gustafson | [DRRS.FX.61173205](/search.md) | 2021 | 2027 |
| Hongkui Zeng | [DRRS.FX.60575786](/search.md) | 2015 | 2027 |
| Horacio O Delaiglesia | [DRRS.FX.00057879](/search.md) | 2004 | 2027 |
| Hung-Ming Lam | [DRRS.FX.61514534](/search.md) | 2024 | 2027 |
| Ian Daniel Peikon | [DRRS.FX.61630233](/search.md) | 2024 | 2027 |
| Ian Daniel Peikon | [DRRS.FX.70137066](/search.md) | 2026 | 2027 |
| Ian R Sweet | [DRRS.FX.61523549](/search.md) | 2024 | 2027 |
| Irwin D Bernstein | [DRRS.FX.60408942](/search.md) | 2013 | 2027 |
| Jakob Helmuth Von Moltke | [DRRS.FX.61580038](/search.md) | 2024 | 2027 |
| James A Knutson | [DRRS.FX.61580051](/search.md) | 2024 | 2027 |
| James Berg | [DRRS.FX.61223517](/search.md) | 2021 | 2027 |
| James David Bryers | [DRRS.FX.60595518](/search.md) | 2015 | 2027 |
| James Henry Peters | [DRRS.FX.60382307](/search.md) | 2013 | 2027 |
| James Henry Peters | [DRRS.FX.60616767](/search.md) | 2015 | 2027 |
| James Michael Olson | [DRRS.FX.61240197](/search.md) | 2021 | 2027 |
| James Otho Phillips | [DRRS.FX.60579508](/search.md) | 2015 | 2027 |
| James Valeriano Alvarez | [DRRS.FX.61224616](/search.md) | 2021 | 2027 |
| Jared Ross Mayers | [DRRS.FX.61623242](/search.md) | 2025 | 2027 |
| Jarrod Andrew Dudakov | [DRRS.FX.60658529](/search.md) | 2016 | 2027 |
| Jarrod Andrew Dudakov | [DRRS.FX.61106541](/search.md) | 2023 | 2027 |
| Jashvant D Unadkat | [DRRS.FX.00059113](/search.md) | 2007 | 2027 |
| Jashvant D Unadkat | [DRRS.FX.60539464](/search.md) | 2015 | 2027 |
| Jason Paul Frazier | [DRRS.FX.61533337](/search.md) | 2024 | 2027 |
| Jay F Sarthy | [DRRS.FX.70068774](/search.md) | 2026 | 2027 |
| Jeansok John Kim | [DRRS.FX.00057761](/search.md) | 2003 | 2027 |
| Jeff William Grimm | [DRRS.FX.00057109](/search.md) | 2001 | 2027 |
| Jeffrey Bryan Carroll | [DRRS.FX.61480236](/search.md) | 2023 | 2027 |
| Jeffrey Scott Chamberlain | [DRRS.FX.61458851](/search.md) | 2023 | 2027 |
| Jennifer Lund Friesen | [DRRS.FX.60276534](/search.md) | 2012 | 2027 |
| Jennifer M. Davis | [DRRS.FX.60600115](/search.md) | 2015 | 2027 |
| Jennifer Susan Roskill | [DRRS.FX.61303547](/search.md) | 2022 | 2027 |
| Jesse Hong-Sae Erasmus | [DRRS.FX.61535795](/search.md) | 2024 | 2027 |
| Jesse Michael Gray | [DRRS.FX.61546325](/search.md) | 2024 | 2027 |
| Jhimmy Talbot | [DRRS.FX.61245106](/search.md) | 2022 | 2027 |
| Jill Marie Janak | [DRRS.FX.70078670](/search.md) | 2026 | 2027 |
| Jill Marie Johnsen | [DRRS.FX.61501925](/search.md) | 2025 | 2027 |
| Jim Boonyaratanakornkit | [DRRS.FX.61447263](/search.md) | 2023 | 2027 |
| Jing-Fei Dong | [DRRS.FX.60327327](/search.md) | 2013 | 2027 |
| Jiyue Zhu | [DRRS.FX.61041901](/search.md) | 2025 | 2027 |
| Joanne Wang | [DRRS.FX.00059181](/search.md) | 2007 | 2027 |
| Joelle Payne Straehla | [DRRS.FX.70000490](/search.md) | 2025 | 2027 |
| John Daniel Clarke | [DRRS.FX.60732238](/search.md) | 2017 | 2027 |
| John David Aitchison | [DRRS.FX.70119941](/search.md) | 2026 | 2027 |
| John Robert Cort | [DRRS.FX.60539471](/search.md) | 2015 | 2027 |

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Página: https://credential-wa.pages.dev/profession/drug-controlled-substance-researcher-registration/
Fonte: Health Care Provider Credential Data — Washington State Department of Health
Recolha: 2026-08-20