DR. MARK RAY MCILWAIN DMD, MD
NPI 1720045685
Oral & Maxillofacial Surgery in Sheffield, AL
NPI Status: Active since April 26, 2006
Contact Information
398 ASHE BLVD
SHEFFIELD, AL
ZIP 35660
Phone: (256) 383-1499
Fax: (256) 383-9135
- Individual
- Male
- Oral & Maxillofacial Surgery
- Accepts Insurance
- PECOS Enrolled
- Opted-Out Medicare
About MARK MCILWAIN
This page provides the complete NPI Profile along with additional information for Mark Mcilwain, a provider established in Sheffield, Alabama with a medical specialization in Oral & Maxillofacial Surgery. The healthcare provider is registered in the NPI registry with number 1720045685 assigned on April 2006. The practitioner's primary taxonomy code is 204E00000X with license number 00016147 (AL). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1720045685
- Provider Name
- DR. MARK RAY MCILWAIN DMD, MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 398 ASHE BLVD SHEFFIELD, AL 35660
- Location Phone
- (256) 383-1499
- Location Fax
- (256) 383-9135
- Mailing Address
- 398 ASHE BLVD SHEFFIELD, AL 35660
- Mailing Phone
- (256) 383-1499
- Mailing Fax
- (256) 383-9135
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-26-2006
- Last Update Date
- 09-11-2025
- Code Navigator
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Mark Mcilwain opted out of Medicare effective on 09-04-2024 until 09-04-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Oral & Maxillofacial Surgery
- Taxonomy Code
- 204E00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 00016147
- License State
- AL
- Taxonomy Description
- Oral and maxillofacial surgeons are trained to recognize and treat a wide spectrum of diseases, injuries and defects in the head, neck, face, jaws and the hard and soft tissues of the oral and maxillofacial region. They are also trained to administer anesthesia, and provide care in an office setting. They are trained to treat problems such as the extraction of wisdom teeth, misaligned jaws, tumors and cysts of the jaw and mouth, and to perform dental implant surgery.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 1223S0112X | Dental Providers | Dentist | LNO3783 (AL) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Choice Bronze HSA - HMO
- Choice Bronze HSA + Vision + Adult Dental - HMO
- Complete Gold - HMO
- Complete Gold + Vision + Adult Dental - HMO
- Everyday Bronze - HMO
- Everyday Bronze + Vision + Adult Dental - HMO
- Everyday Gold - HMO
- Everyday Gold + Vision + Adult Dental - HMO
- Standard Expanded Bronze - HMO
- Standard Expanded Bronze + Vision + Adult Dental - HMO
- Standard Gold - HMO
- Standard Gold + Vision + Adult Dental - HMO
- Standard Silver - HMO
- Standard Silver + Vision + Adult Dental - HMO
- Clarity Silver - HMO
- Complete Gold - HMO
- Complete Gold + Vision + Adult Dental - HMO
- Elite Bronze - HMO
- Elite Bronze + Vision + Adult Dental - HMO
- Enhanced Diabetes Care Silver with $0 Drug Options - HMO
- Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - HMO
- Everyday Bronze - HMO
- Everyday Bronze + Vision + Adult Dental - HMO
- Everyday Gold - HMO
- Everyday Gold + Vision + Adult Dental - HMO
- Focused Silver - HMO
- Focused Silver + Vision + Adult Dental - HMO
- Standard Expanded Bronze - HMO
- Standard Expanded Bronze + Vision + Adult Dental - HMO
- Standard Gold - HMO
- Standard Gold + Vision + Adult Dental - HMO
- Standard Silver - HMO
- Standard Silver + Vision + Adult Dental - HMO
- Thrive Silver - HMO
- Complete Gold - EPO
- Complete Gold + Vision + Adult Dental - EPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Elite Gold - EPO
- Elite Gold + Vision + Adult Dental - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Focused Silver - EPO
- Focused Silver + Vision + Adult Dental - EPO
- Standard Expanded Bronze - EPO
- Standard Expanded Bronze + Vision + Adult Dental - EPO
- Standard Gold - EPO
- Standard Gold + Vision + Adult Dental - EPO
- Standard Silver - EPO
- Standard Silver + Vision + Adult Dental - EPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Elite Gold - EPO
- Elite Gold + Vision + Adult Dental - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options - EPO
- Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Everyday Gold - EPO
- Everyday Gold + Vision + Adult Dental - EPO
- Standard Expanded Bronze - EPO
- Standard Expanded Bronze + Vision + Adult Dental - EPO
- Standard Gold - EPO
- Standard Gold + Vision + Adult Dental - EPO
- Standard Silver - EPO
- Standard Silver + Vision + Adult Dental - EPO
- BEST Life Preferred Dental Plan - PPO
- BEST Life Superior Dental Plan - PPO
- BEST Life Essental Preferred Dental Plan - PPO
- BEST Life Essental Value Dental Plan - PPO
- BEST Life Essential Basic Dental Plan - PPO
- BEST Life Essential Basic Dental - PPO
- BEST Life Essential Basic Dental Plan - Indemnity
- BEST Life Essential Basic Dental Plan - PPO
- BEST Life Essential Value Dental Plan - PPO
- BEST Life Essential Value Dental - PPO
- BEST Life Essential Value Dental Plan - Indemnity
- BEST Life Essential Value Dental Plan - PPO
- BEST Life Preferred Dental - PPO
- BEST Life Preferred Dental Plan - PPO
- BEST Life Preferred Dental Plan - Indemnity
- BEST Life Preferred Dental Plan - PPO
- BEST Life Superior Dental - PPO
- BEST Life Superior Dental Plan - PPO
- BEST Life Superior Dental Plan - Indemnity
- BEST Life Superior Dental Plan - PPO
- Dental Blue Plus - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- BlueCare Dental? 1D - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- BlueCare Dental? 1D - PPO
- BlueCare Dental 1D - PPO
- BlueCare Dental 4 Kids? 1A - PPO
- BlueCare Dental 4 Kids? 1B - PPO
- BlueCare Dental? 1A - PPO
- BlueCare Dental? 1B - PPO
- BlueCare Dental? 1C - PPO
- Delta Dental PPO Basic Plan for Families - PPO
- Delta Dental PPO Preferred Plan for Families - PPO
- Delta Dental PPO Preventive Plan for Families - PPO
- EMI Health Advantage Co-Pay - PPO
- EMI Health Advantage PPO - PPO
- EMI Health Premier PPO (High) - PPO
- EMI Health Premier PPO (Low) - PPO
- BlueDental Copayment Q - PPO
- BlueDental Copayment QF - PPO
- Guardian Basics for Families and Individuals - PPO
- Guardian Essentials for Families and Individuals - PPO
- Guardian Preventive Plus for Families and Individuals - PPO
- HRI Essential Plus Plan - HMO
- HRI Essential Plus Plan - PPO
- HRI Preventive Family Plan - HMO
- HRI Preventive Family Plan - PPO
- HRI Total Care Plan - HMO
- HRI Total Care Plan - PPO
- Humana Dental Smart Choice - PPO
- Humana Dental Smart Choice - Basic - PPO
- Humana Dental Smart Choice - High - PPO
- Humana Dental Smart Choice - Lite - PPO
- Humana Dental Smart Choice - Low - PPO
- Paramount Dental Essential Plus Plan - EPO
- Paramount Dental Preventive Family Plan - EPO
- Paramount Dental Total Care Plan - EPO
- TruAssure Basic Adult or Child Dental Plan - PPO
- TruAssure Preferred Adult or Child Dental Plan - PPO
- TruAssure Preventive Dental Plan - PPO
- Lone Star - Smile Now - PPO
- Smile Now Arizona - No Waiting Period PPO - PPO
- Smile Now Michigan - No Waiting Period PPO - PPO
- Smile Now Ohio - No Waiting Period PPO - PPO
- Smile Now Texas- No Waiting Period Plan - PPO
- Smile Now Utah - No Waiting Period PPO - PPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Mark Mcilwain is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 09-04-2024
Opt-Out End Date: 09-04-2026
Eligible to Order and Refer? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
New patient office or other outpatient visit, 15-29 minutes
This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.
This service was performed 17 times for 17 patientsReviews for DR. MARK RAY MCILWAIN DMD, MD
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1720045685, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 55 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 7 providers are registered at the same or a nearby location.
SHEFFIELD, AL 35660
SHEFFIELD, AL 35660
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1720045685, enumerated as an "individual" on April 26, 2006.
The provider is located at 398 ASHE BLVD SHEFFIELD, AL 35660 and the phone number is (256) 383-1499.
Oral & Maxillofacial Surgery with taxonomy code 204E00000X.
The provider might be accepting Accepts: Ambetter from Magnolia Health, Ambetter Health,. Please consult your insurance carrier or call the provider to verify.
