DR. OLUWATOYIN MARY OTTUN DNP, FNP-C, PMHNP-BC
NPI 1790171296
Nurse Practitioner - Psychiatric/Mental Health in Annapolis, MD
About Dr. Oluwatoyin Mary Ottun Dnp, Fnp-c, Pmhnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. OLUWATOYIN MARY OTTUN DNP, FNP-C, PMHNP-BC (NPI 1790171296) is an individual psychiatric/mental health provider in Annapolis, Maryland, licensed in Maryland (R188050) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Oluwatoyin Mary Ottun Dnp, Fnp-c, Pmhnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
7Medicare enrollment records show Oluwatoyin Ottun reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Annapolis, MD 21401
- Reassigned Medicare billing, Maryland enrollment
- 794 clinicians in this Medicare group
Arnold, MD 21012
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Arundel Mental Health Professionals Lc
- 124 clinicians in this Medicare group
Pasadena, MD 21122
- Reassigned Medicare billing, Maryland enrollment
- 9 clinicians in this Medicare group
Pasadena, MD 21044
- Reassigned Medicare billing, Maryland enrollment
- 13 clinicians in this Medicare group
Lanham, MD 20706
- Reassigned Medicare billing, Maryland enrollment
- 21 clinicians in this Medicare group
Abingdon, MD 21009
- Reassigned Medicare billing, Maryland enrollment
- 24 clinicians in this Medicare group
Miami, FL 33130
- Reassigned Medicare billing, District of Columbia enrollment
- 1,424 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANNAPOLIS, MD 21401
ANNAPOLIS, MD 21401
ANNAPOLIS, MD 21401
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Oluwatoyin Ottun's NPI number?
The NPI number for Oluwatoyin Ottun is 1790171296. It was assigned to this individual provider in the NPPES registry on April 10, 2015. The provider is also known as Oluwatoyin Adekeye Fnp-Bc, Pmhnp-Bc.
Where is Oluwatoyin Ottun located?
Oluwatoyin Ottun practices at 810 Bestgate Rd Ste 325, Annapolis, MD 21401. The listed phone number is (443) 906-3506.
What is Oluwatoyin Ottun's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Oluwatoyin Ottun enrolled in Medicare?
Yes. Oluwatoyin Ottun is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Oluwatoyin Ottun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oluwatoyin Ottun reassigns Medicare benefits to 7 organizations: Luminis Health Medical Group, LLC (Annapolis, MD), Arundel Mental Health Professionals L.C. (Arnold, MD), Evolve Life Centers Iop LLC (Pasadena, MD), Global Pain Management (Pasadena, MD), Choice Pain & Rehabilitation Center, LLC (Lanham, MD) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Oluwatoyin Ottun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Oluwatoyin Ottun was last updated on February 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Oluwatoyin Mary Ottun, DNP, FNP-C, PMHNP-BC · NPI 1790171296
Psychiatric/Mental Health physician in Annapolis, Maryland. Individual provider, active in the CMS NPPES registry since April 10, 2015.
## Identity
- **NPI:** 1790171296 (Entity type: Individual)
- **Enumerated:** April 10, 2015
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** R188050 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 810 BESTGATE RD STE 325, Annapolis, MD 21401-4291
- **Phone:** (443) 906-3506
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Luminis Health Medical Group, LLC (NPI 1053389825, Annapolis, MD); Arundel Mental Health Professionals L.C. (NPI 1073649521, Arnold, MD); Evolve Life Centers Iop LLC (NPI 1124735717, Pasadena, MD); Global Pain Management (NPI 1922443704, Pasadena, MD); Choice Pain & Rehabilitation Center, LLC (NPI 1568809598, Lanham, MD); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** February 13, 2026
- **Other identifiers:** Other R188050 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1790171296) · Data from the CMS NPPES public registry.