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DR. WILLIAM CONAN MUSTAIN M.D.
NPI 1760635890
Colon & Rectal Surgery in Oklahoma City, OK

Active since November 03, 2008PECOS EnrolledAccepts Medicare Assignment
4205 MCAULEY BLVD STE 301, OKLAHOMA CITY, OK 73120(405) 936-5718(405) 936-5719 Get Directions Write a Review

NPPES record last updated: March 25, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. William Conan Mustain M.d. NPPES

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

DR. WILLIAM CONAN MUSTAIN M.D. (NPI 1760635890) is an individual colon & rectal surgery provider in Oklahoma City, Oklahoma, licensed in Oklahoma (42838) and active in the NPI registry since November 2008. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Oklahoma City, Inc, and is a graduate of University Of Mississippi School Of Medicine (2007).

NPPES Registry Identity

NPI1760635890
Entity TypeIndividualMale
Primary Taxonomy208C00000X
Provider Legal NameDR. WILLIAM CONAN MUSTAINCredential: M.D.
Location Address4205 MCAULEY BLVD STE 301Oklahoma City, OK 73120-8347
Mailing Address4205 Mcauley Blvd Ste 301Oklahoma City, OK 73120-8347 · (405) 936-5718 · Fax (405) 936-5719
Phone(405) 936-5718
Fax(405) 936-5719
Sole ProprietorNo
Medical School CMSUniversity Of Mississippi School Of MedicineGraduated 2007
Enumeration DateNovember 3, 2008
Last NPPES UpdateMarch 25, 2024
NPPES CertifiedMarch 25, 2024
✔ NPI 1760635890 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208C00000X
Licenses✔ Licensed in OK · 42838✔ Licensed in AR · E-9260
Definition
A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.
Also ListedSurgeryTaxonomy 208600000X · License R1900 (KY), E-9260 (AR)
4205 MCAULEY BLVD STE 301, Oklahoma City, OK 73120
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Other Identifiers 2

Other5ZZ13AR · Ar Bcbs
Medicaid209704001AR

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, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Conan Mustain M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6002121555
PECOS Enrollment IDI20240404003070
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show William Mustain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinic Oklahoma Communities
0.1 mi
Family Medicine
4300 W MEMORIAL RD
Oklahoma City, OK 73120
  • Reassigned Medicare billing, Oklahoma enrollment
  • 975 clinicians in this Medicare group
NPI 1386874550 (405) 752-3333
University Of Arkansas For Medical Sciences
196 mi
Psychiatry
3425 N FUTRALL DR STE 103
Fayetteville, AR 72703
  • Reassigned Medicare billing, Arkansas enrollment
  • 2,038 clinicians in this Medicare group
NPI 1720217599 (479) 713-8350

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

Areas of Expertise CMS Part B claims 12

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
44 services44 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
40 services40 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
28 services24 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
21 services16 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
20 services18 patients
Partial release of large bowel and partial removal of large bowel using an endoscope 44213
This procedure involves using an endoscope, a flexible tube with a camera, to partially release and remove a section of your large bowel. It's a minimally invasive surgery that helps treat conditions like cancer or bowel obstruction.
19 services19 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Hospital Oklahoma City, Inc

Acute Care Hospitals · Oklahoma City, OK
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number370013
Location4300 West Memorial RoadOklahoma City, OK 73120 · Oklahoma County
Emergency services Birthing friendly

Mercy Hospital Ada

Acute Care Hospitals · Ada, OK
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370020
Location430 North Monte VistaAda, OK 74820 · Pontotoc County
Emergency services Birthing friendly

Mercy Hospital Ardmore, Inc

Acute Care Hospitals · Ardmore, OK
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number370047
Location1011 14th Ave NWArdmore, OK 73401 · Carter County
Emergency services Birthing friendly

Mercy Hospital Guthrie

Critical Access Hospitals · Guthrie, OK
OwnershipVoluntary non-profit - Private
CMS Certification Number371317
Location200 S Academy RdGuthrie, OK 73044 · Logan County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.46 typical visit price
range $53.00 – $162.61
Typical copayment $20.61 (range $13.25 – $40.65)
Most-billed visit code 99203
Established Patient
$66.48 typical visit price
range $16.68 – $132.40
Typical copayment $16.62 (range $4.17 – $33.10)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 11

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Skin barrier; solid, 4 x 4 or equivalent; each A4362
DME-Orthotic Devices · category DF010N
5 suppliers23 claims710 services$3.33 avg. paid by Medicare
Ostomy skin barrier, liquid (spray, brush, etc.), per oz A4369
DME-Orthotic Devices · category DF010N
3 suppliers11 claims22 services$2.35 avg. paid by Medicare
Ostomy skin barrier, powder, per oz A4371
DME-Orthotic Devices · category DF010N
6 suppliers19 claims29 services$3.52 avg. paid by Medicare
Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385
DME-Orthotic Devices · category DF010N
3 suppliers18 claims340 services$4.52 avg. paid by Medicare
Ostomy pouch, drainable, with extended wear barrier attached, with built-in convexity (1 piece), each A4390
DME-Orthotic Devices · category DF010N
1 supplier12 claims135 services$8.59 avg. paid by Medicare
Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each A4409
DME-Orthotic Devices · category DF010N
3 suppliers13 claims500 services$5.63 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 William Mustain's NPI number?

The NPI number for William Mustain is 1760635890. It was assigned to this individual provider in the NPPES registry on November 3, 2008.

Where is William Mustain located?

William Mustain practices at 4205 Mcauley Blvd Ste 301, Oklahoma City, OK 73120. The listed phone number is (405) 936-5718.

What is William Mustain's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Is William Mustain enrolled in Medicare?

Yes. William Mustain is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for William Mustain's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Mustain reassigns Medicare benefits to 2 organizations: Mercy Clinic Oklahoma Communities (Oklahoma City, OK) and University Of Arkansas For Medical Sciences (Fayetteville, AR). 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 William Mustain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Mustain 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 6 other insurers list William Mustain 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.

Is William Mustain affiliated with any hospitals?

According to CMS data, William Mustain is affiliated with Mercy Hospital Oklahoma City, Inc, Mercy Hospital Ada, Mercy Hospital Ardmore, Inc and Mercy Hospital Guthrie.

When was this NPI record last updated?

The NPPES record for William Mustain was last updated on March 25, 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.