Serenity Outpatient Services
Serenity Outpatient Services holds 7 active organization NPIs in the federal registry, with practice locations in 6 cities in 6 states. Each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPIUpper Marlboro, MD has the most NPIs, 2
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2019
Source: CMS NPPES, enumeration dates.
2 NPIs were issued in 2019 alone, more than in any other year; none in 15 of the years between.
Upper Marlboro, MD locations
The city with the most Serenity Outpatient Services NPIs. The full list of all 7 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1750931721 | 9701 APOLLO DR STE 461, Upper Marlboro, MD | Community/Behavioral Health Agency | Sep 12, 2019 |
| 1922965854 | 9701 APOLLO DR STE 461, Upper Marlboro, MD | Community/Behavioral Health Agency | Jan 5, 2026 |
All 7 locations, by state and city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1891184735 | 4332 CENTRAL AVE SUITE O, Hot Springs, AR | Community/Behavioral Health Agency | Jan 15, 2015 |
| 1295508448 | 2979 HARRISON ST APT 3, Paducah, KY | Clinical Social Worker | Oct 31, 2023 |
| 1750931721 | 9701 APOLLO DR STE 461, Upper Marlboro, MD | Community/Behavioral Health Agency | Sep 12, 2019 |
| 1922965854 | 9701 APOLLO DR STE 461, Upper Marlboro, MD | Community/Behavioral Health Agency | Jan 5, 2026 |
| 1972155695 | 3013 N HIGHWAY 167 STE B, Catoosa, OK | Counselor | Jul 12, 2019 |
| 1184669145 | 4625 ALABAMA ST, SUITE C, El Paso, TX | Mental Health Clinic/Center (Including Community Mental Health Center) | Jun 16, 2006 |
| 1477694727 | 1717 W NORTHWEST BLVD SUITE C, Spokane, WA | Addiction (Substance Use Disorder) Counselor | Feb 9, 2007 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Serenity Outpatient Services have 7 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Serenity Outpatient Services's NPIs list practice locations in 6 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.