DR. RICHARD WAYNE MELLIN MD DDS
NPI 1902965635
Oral & Maxillofacial Surgery in Greeley, CO
NPI Status: Active since December 08, 2006
Contact Information
3400 W 16TH ST STE 1A
GREELEY, CO
ZIP 90634
Phone: (970) 353-5826
Fax: (970) 353-5829
- Individual
- Male
- Oral & Maxillofacial Surgery
- PECOS Enrolled
- Opted-Out Medicare
About RICHARD MELLIN
This page provides the complete NPI Profile along with additional information for Richard Mellin, a provider established in Greeley, Colorado with a medical specialization in Oral & Maxillofacial Surgery. The healthcare provider is registered in the NPI registry with number 1902965635 assigned on December 2006. The practitioner's primary taxonomy code is 204E00000X with license number MEDICAL 37605 (CO). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1902965635
- Provider Name
- DR. RICHARD WAYNE MELLIN MD DDS
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3400 W 16TH ST STE 1A GREELEY, CO 90634
- Location Phone
- (970) 353-5826
- Location Fax
- (970) 353-5829
- Mailing Address
- 3400 W 16TH ST STE 1A GREELEY, CO 80634
- Mailing Phone
- (970) 353-5826
- Mailing Fax
- (970) 353-5829
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-08-2006
- 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. Richard Mellin opted out of Medicare effective on 04-05-2016 until 04-05-2026. 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.
- MEDICAL 37605
- License State
- CO
- 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 | DENTAL 7167 (CO) |
Medicare Participation & PECOS Enrollment Status
Richard Mellin 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) and a Home Health Agency (HHA).
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: 04-05-2016
Opt-Out End Date: 04-05-2026
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: No
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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 1902965635, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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 65 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1902965635, enumerated as an "individual" on December 08, 2006.
The provider is located at 3400 W 16TH ST STE 1A GREELEY, CO 90634 and the phone number is (970) 353-5826.
Oral & Maxillofacial Surgery with taxonomy code 204E00000X.
