Oanh Nguyen Clark, DO
Hospice and Palliative Medicine (Emergency Medicine) Physician · Columbus, OH
Oanh Nguyen Clark, DO is a hospice and palliative medicine (emergency medicine) physician with a practice address in Columbus, Ohio, and NPI 1811104938, issued on May 17, 2007. Check the license (Ohio 9000, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Oanh Nguyen Clark
- Credential
- DO
- Primary taxonomy
- Hospice and Palliative Medicine (Emergency Medicine) Physician 207PH0002X
- License number
- 9000 OH
Self-reported in NPPES; status is on the state search - Practice location
- 5156 Baker Ridge Dr, Columbus, OH 43228
- Phone
- (614) 851-1937
- Enumerated
- May 17, 2007
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20081220000128); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospice and palliative medicine (emergency medicine) physician records → All 15 in Ohio → Look up another NPI →
Verify Oanh Nguyen Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 9000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average hospice and palliative medicine (emergency medicine) physician in 2024
584 Medicare Part D claims for 454 beneficiaries, against an average of 194 among the 130 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Ofloxacin55 claims
- Cephalexin49 claims
- Fluconazole43 claims
- Polymyxin B Sul-Trimethoprim41 claims
- Nitrofurantoin Mono-Macro25 claims
- Doxycycline Monohydrate22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oanh Nguyen Clark among 15 hospice and palliative medicine (emergency medicine) physician records in Ohio
Oanh Nguyen Clark, DO is one of 15 hospice and palliative medicine (emergency medicine) physician records with a practice address in Ohio. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 40% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PH0002X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospice and Palliative Medicine (Emergency Medicine) Physician providers in Ohio
There are 15 hospice and palliative medicine (emergency medicine) physician records in Ohio.
All 15 in Ohio → Every provider in Columbus → Hospice and Palliative Medicine (Emergency Medicine) Physician nationwide →
The 8 hospice and palliative medicine (emergency medicine) physician records with the nearest ZIP codes
- Gregory Seidensticker, MDColumbus, OH 432151457384307
- Rebecca Dionisio, DOColumbus, OH 432141396911418
- Michael Yahner, MDColumbus, OH 432141790711752
- Meryl SudhakarColumbus, OH 432101265069280
- Mark Brauner, D.O.Columbus, OH 432091588870950
- Scott McKeon, D.O.Marion, OH 433021710927967
- Daniel Hawkins, MDCleveland, OH 441101063944106
- Christopher Swyers, DOCleveland, OH 441101699135624
Common questions
What is Oanh Nguyen Clark, DO's NPI number?
Oanh Nguyen Clark, DO's National Provider Identifier (NPI) is 1811104938, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Oanh Nguyen Clark, DO located?
The NPPES record lists a practice address at 5156 Baker Ridge Dr, Columbus, OH, 43228. Phone: (614) 851-1937. Providers update this record themselves, so call before visiting.
How can I verify Oanh Nguyen Clark, DO's license?
NPPES lists Ohio license number 9000, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Oanh Nguyen Clark, DO prescribe under Medicare Part D?
In 2024, Oanh Nguyen Clark, DO had 584 Medicare Part D claims for 454 beneficiaries; the average among hospice and palliative medicine (emergency medicine) physician prescribers was 194. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.