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SOUTHWESTERN OKLAHOMA SURGICAL ASSOCIATES, LLC
NPI 1841952397
Clinic/Center - Ambulatory Surgical in Lawton, OK

Active since October 12, 2021CLIA 37D2259873 · Waiver
5374 NW CACHE RD, LAWTON, OK 73505(580) 536-0000 Get Directions Write a Review

NPPES record last updated: March 6, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 6, 2024, Oct 12, 2021 (2 updates tracked since 2021).

About Southwestern Oklahoma Surgical Associates, Llc NPPES

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

SOUTHWESTERN OKLAHOMA SURGICAL ASSOCIATES, LLC (NPI 1841952397) is a healthcare organization registered as an ambulatory surgical in Lawton, Oklahoma and active in the NPI registry since October 2021. The organization holds a CLIA Waiver certificate valid through May 11, 2028 and lists Shawna Byrd, Ceo, as its authorized official.

NPPES Registry Identity

NPI1841952397
Entity TypeOrganization
Primary Taxonomy261QA1903X
Legal Business NameSOUTHWESTERN OKLAHOMA SURGICAL ASSOCIATES, LLC
Location Address5374 NW CACHE RDLawton, OK 73505-3313
Mailing Address5374 Nw Cache RdLawton, OK 73505-3313 · (580) 536-0000
Phone(580) 536-0000
Organization SubpartNo
Authorized OfficialShawna ByrdCeo · (580) 536-0000
Enumeration DateOctober 12, 2021
Last NPPES UpdateMarch 6, 20242 updates tracked since enumeration
NPPES CertifiedMarch 6, 2024
✔ NPI 1841952397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities
Taxonomy Code261QA1903X
Also ListedNurse Anesthetist, Certified RegisteredTaxonomy 367500000X
5374 NW CACHE RD, Lawton, OK 73505
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and more.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)

Southwestern Oklahoma Surgical Associates, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Southwestern Oklahoma Surgical Associates, LLC, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Mark Vadney, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1326035288
5374 NW CACHE RD
Lawton, OK 73505
(580) 699-3939
✔ Accepts Medicare0.1 mi
Bradley Maples
Certified Registered Nurse Anesthetist (CRNA)
NPI 1891235271
3401 W GORE BLVD
Lawton, OK 73505
(580) 355-8620
✔ Accepts Medicare1.8 mi
Kathryn Newport, MD
Anesthesiology
NPI 1194717769
5602 SW LEE BLVD
Lawton, OK 73505
(580) 531-4700
✔ PECOS✔ Accepts Medicare2.0 mi
Kamran Massoumi, M.D.
Ophthalmology
NPI 1639172604
1020 N MAIN ST
Elk City, OK 73644
(580) 225-1555
✔ PECOS✔ Accepts Medicare76 mi
Michael Haecherl, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1811967862
1705 W 2ND ST
Elk City, OK 73644
(580) 225-2511
✔ Accepts Medicare77 mi
Brooklyn Castilla
Certified Registered Nurse Anesthetist (CRNA)
NPI 1114653979
10360 E DREXEL RD STE 170
Tucson, AZ 85747
(520) 207-2546
✔ Accepts Medicare731 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 37D2259873

Southwestern Oklahoma Surgical Associates, LLC · Lawton, OK
Active · expires May 11, 2028
CLIA Number37D2259873
Laboratory TypeAmbulatory Surgery Center
Certificate Effective DateMay 12, 2026
Certificate Expiration DateMay 11, 2028
Laboratory DirectorKamran M. Massoumi
Laboratory Phone(580) 536-0000
Laboratory LocationSouthwestern Oklahoma Surgical Associates, LLC5374 NW Cache Rd, Lawton, OK 73505
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of cataract with insertion of prosthetic lens 66984
This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.
601 services343 patients
Complex removal of cataract with insertion of prosthetic lens 66982
This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.
115 services83 patients
Removal of excessive skin and fat of upper eyelid 15823
This procedure, also known as upper eyelid surgery, is performed to remove excess skin and fat from the upper eyelid. It can help improve vision if heavy eyelids hinder it, and can also enhance the appearance of the eyes. It's a common, safe procedure.
48 services24 patients
Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye 66991
This is a two-part eye procedure. First, a cloudy lens (cataract) is removed from its outer layer and replaced with an artificial lens to improve vision. Second, a drainage device is inserted into the front part of the eye to manage fluid levels, preventing pressure build-up.
29 services18 patients
Removal of nasal air passage under lining tissue 30140
This procedure, often done to improve breathing or address sinus issues, involves the removal of tissue from the lining of the nasal air passage. It's performed under anesthesia and recovery time varies based on individual health status.
22 services11 patients
Incision of nasal sinus using an endoscope 31256
This procedure, called endoscopic sinus surgery, involves using a thin, flexible tube with a light and camera on the end, known as an endoscope. It's inserted into the nasal passages to view and remove obstructions in the sinuses, helping to alleviate symptoms.
21 services12 patients

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 Southwestern Oklahoma Surgical Associates, LLC's NPI number?

The NPI number for Southwestern Oklahoma Surgical Associates, LLC is 1841952397. It was assigned to this organization in the NPPES registry on October 12, 2021.

Where is Southwestern Oklahoma Surgical Associates, LLC located?

Southwestern Oklahoma Surgical Associates, LLC is located at 5374 NW Cache Rd, Lawton, OK 73505. The listed phone number is (580) 536-0000.

What is Southwestern Oklahoma Surgical Associates, LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

Is Southwestern Oklahoma Surgical Associates, LLC enrolled in Medicare?

Yes. Southwestern Oklahoma Surgical Associates, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Southwestern Oklahoma Surgical Associates, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 3 Medicare specialties reassign their Medicare billing to Southwestern Oklahoma Surgical Associates, LLC. 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 Certified Registered Nurse Anesthetist (CRNA) (4), Anesthesiology (1) and Ophthalmology (1). Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Southwestern Oklahoma Surgical Associates, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 37D2259873) is associated with this NPI, valid through May 11, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Southwestern Oklahoma Surgical Associates, LLC 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 2 other insurers list Southwestern Oklahoma Surgical Associates, LLC 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 Southwestern Oklahoma Surgical Associates, LLC was last updated on March 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.