Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

QUEST MHSA
NPI 1174776819
Community/Behavioral Health in Antlers, OK

Active since October 28, 2008
307 SW B ST, ANTLERS, OK 74523(580) 298-3001(580) 298-5357 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 7, 2026, Jul 10, 2017, Mar 4, 2016 (3 updates tracked since 2016).

About Quest Mhsa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

QUEST MHSA (NPI 1174776819) is a healthcare organization registered as a community/behavioral health in Antlers, Oklahoma and active in the NPI registry since October 2008. The organization lists Marla Lynn Marcum, Ceo, as its authorized official.

NPPES Registry Identity

NPI1174776819
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameQUEST MHSA
Location Address307 SW B STAntlers, OK 74523-3824
Mailing AddressPo Box 309Antlers, OK 74523-0309 · (580) 298-3001 · Fax (580) 298-5357
Fax(580) 298-5357
Organization SubpartNo
Authorized OfficialMarla Lynn MarcumCeo · (580) 298-3001
Enumeration DateOctober 28, 2008
Last NPPES UpdateOctober 7, 20263 updates tracked since enumeration
NPPES CertifiedOctober 7, 2026
✔ NPI 1174776819 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCommunity/Behavioral HealthAgencies
Taxonomy Code251S00000X
Definition
A private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intellectual disabilities, substance abuse and/or behavioral health services to individuals with those disabilities. Services may range from companion care, respite, transportation, community integration, crisis intervention and stabilization, supported employment, day support, prevocational services, residential support, therapeutic and supportive consultation, environmental modifications, intensive in-home therapy and day treatment, in addition to traditional mental health and behavioral treatment.
307 SW B ST, Antlers, OK 74523

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Quest Mhsa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

39

Medicare enrollment records show 39 clinicians reassign Medicare billing to Quest Mhsa, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Mental Health Counselor34
Marriage and Family Therapist3
Clinical Social Worker2

Nearest to this location (20)

See all 39
Mental Health Counselor
NPI 1235431727
307 SW B ST
Antlers, OK 74523
(580) 298-3001
✔ PECOS✔ Accepts Medicare19 mi
Clinical Social Worker
NPI 1932408333
1717 1/2 W JACKSON ST
Hugo, OK 74743
(580) 326-9475
✔ PECOS✔ Accepts Medicare20 mi
Mental Health Counselor
NPI 1083055933
112 N HIGH ST
Antlers, OK 74523
(580) 298-3001
✔ PECOS✔ Accepts Medicare20 mi
Mental Health Counselor
NPI 1659641090
401 GREATHOUSE DR
Atoka, OK 74525
(580) 239-2071
✔ PECOS✔ Accepts Medicare30 mi
Mental Health Counselor
NPI 1528212990
1151 NORTH HIGHWAY 69
Stringtown, OK 74569
(580) 346-7301
✔ PECOS✔ Accepts Medicare32 mi
Mental Health Counselor
NPI 1245504430
22183 COUNTY ROAD 3 DR
Stonewall, OK 74871
(580) 265-4649
✔ PECOS✔ Accepts Medicare59 mi
Mental Health Counselor
NPI 1013461805
104 E CARL ALBERT PKWY
Mcalester, OK 74501
(918) 423-0220
✔ PECOS✔ Accepts Medicare63 mi
Mental Health Counselor
NPI 1538740451
104 E CARL ALBERT PKWY
Mcalester, OK 74501
(918) 423-0220
✔ PECOS✔ Accepts Medicare63 mi
Mental Health Counselor
NPI 1144551722
25009 US HIGHWAY 270
Howe, OK 74940
(918) 658-4421
✔ PECOS92 mi
Mental Health Counselor
NPI 1215256136
1000 MEADOW LANE
Howe, OK 74940
(918) 658-2189
✔ PECOS✔ Accepts Medicare95 mi
Mental Health Counselor
NPI 1063773414
46100 LOVINGS LN
Heavener, OK 74937
(479) 650-9691
✔ PECOS98 mi
Mental Health Counselor
NPI 1720351273
900 BROADWAY SUITE 1
Poteau, OK 74953
(918) 649-0772
✔ PECOS✔ Accepts Medicare100 mi
Mental Health Counselor
NPI 1881026060
900 N BROADWAY ST STE 1
Poteau, OK 74953
(918) 649-0772
✔ PECOS101 mi
Mental Health Counselor
NPI 1164741021
21466 KNOT HOLE RD
Cameron, OK 74932
(918) 721-5422
✔ PECOS✔ Accepts Medicare104 mi
Mental Health Counselor
NPI 1740350396
1131 N KICKAPOO AVE
Shawnee, OK 74801
(405) 275-2877
✔ PECOS✔ Accepts Medicare109 mi
Mental Health Counselor
NPI 1053808923
624 W INDEPENDENCE ST STE 105
Shawnee, OK 74804
(405) 434-2301
✔ PECOS109 mi
Marriage and Family Therapist
NPI 1508492380
23 N 8TH ST
Duncan, OK 73533
(254) 220-0759
✔ PECOS123 mi
Marriage and Family Therapist
NPI 1497299473
807 SW F AVE
Lawton, OK 73501
(580) 284-8036
✔ PECOS✔ Accepts Medicare143 mi
Clinical Social Worker
NPI 1861916249
2121 S COLUMBIA AVE STE 580
Tulsa, OK 74114
(918) 982-6524
✔ PECOS✔ Accepts Medicare145 mi
Marriage and Family Therapist
NPI 1316380371
5 NW 16TH ST STE 10C
Lawton, OK 73507
(580) 280-1846
✔ PECOS✔ Accepts Medicare151 mi
See all 39 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Quest Mhsa's NPI number?

The NPI number for Quest Mhsa is 1174776819. It was assigned to this organization in the NPPES registry on October 28, 2008.

Where is Quest Mhsa located?

Quest Mhsa is located at 307 SW B St, Antlers, OK 74523. The listed phone number is (580) 298-3001.

What is Quest Mhsa's specialty?

The primary specialty registered for this NPI is Community/Behavioral Health with taxonomy code 251S00000X.

Is Quest Mhsa enrolled in Medicare?

Yes. Quest Mhsa is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Quest Mhsa?

According to the CMS Revalidation Reassignment List (October 2026 release), 39 clinicians in 3 Medicare specialties reassign their Medicare billing to Quest Mhsa. A 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 the clinician's services. The largest specialties are Mental Health Counselor (34), Marriage and Family Therapist (3) and Clinical Social Worker (2). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Quest Mhsa accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Quest Mhsa as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Quest Mhsa was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.