Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Annapolis, MD
Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Annapolis, Maryland, and NPI 1790171296, issued on Apr 10, 2015. Check the license (Maryland R188050, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oluwatoyin Mary Ottun
- Credential
- DNP, FNP-C, PMHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- R188050 MD
Self-reported in NPPES; status is on the state search - Practice location
- 810 Bestgate RD Ste 325, Annapolis, MD 21401
- Phone
- (443) 906-3506
- Enumerated
- Apr 10, 2015
- Record last updated
- Feb 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20180430000473); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,373 in Maryland → Look up another NPI →
Also registered at 810 Bestgate RD Ste 325
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William Lukens, LCSW-CClinical Social Worker1063605368
- Donovan Maisel, PSYDPsychologist1134899149
- Maya McKnightClinical Social Worker1902777691
Verify Oluwatoyin Mary Ottun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R188050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
329 Medicare Part D claims for 29 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Fluoxetine Hcl33 claims
- Sertraline Hcl31 claims
- Lamotrigine27 claims
- Trazodone Hcl27 claims
- Clonazepam26 claims
- Sublocade26 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.
Industry payments in 2024: $681.57
39 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Arundel Mental Health Professionals LCAnnapolis, MD
- Evolve Life Centers Iop LLCPasadena, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oluwatoyin Mary Ottun among 2,373 psychiatric/mental health nurse practitioner records in Maryland
Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC is one of 2,373 psychiatric/mental health nurse practitioner records with a practice address in Maryland. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 19% of them.
- NPI issued2015 · 19% of these records are older, 78% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2016 · median 2021 among the 1,409 with a school on file
- Record last updated2026 · 19% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Maryland
There are 2,373 psychiatric/mental health nurse practitioner records in Maryland.
All 2,373 in Maryland → Every provider in Annapolis → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Similade AdetunjiAnnapolis, MD 214011073155248
- Robert Allen-Emerson, PMHNPAnnapolis, MD 214011659688141
- Eyong Atem, NPAnnapolis, MD 214011225483340
- Paula Christie, PMHNP-BCAnnapolis, MD 214011487192035
- Grace DohAnnapolis, MD 214011255994802
- Kristin KellyAnnapolis, MD 214011538683479
- Venrice Kerr, PMHNP-BC, CRNP-FAnnapolis, MD 214011659517753
- Mitchell Odom, NPAnnapolis, MD 214011699909283
Common questions
What is Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC's NPI number?
Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC's National Provider Identifier (NPI) is 1790171296, issued on Apr 10, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC located?
The NPPES record lists a practice address at 810 Bestgate RD Ste 325, Annapolis, MD, 21401. Phone: (443) 906-3506. Providers update this record themselves, so call before visiting.
How can I verify Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC's license?
NPPES lists Maryland license number R188050, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC prescribe under Medicare Part D?
In 2024, Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC had 329 Medicare Part D claims for 29 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.