DR. JOHN C DUFF O.D.
NPI 1629033394
Optometrist in Brattleboro, VT
NPI Status: Active since April 18, 2006
Contact Information
399 CANAL ST
BRATTLEBORO, VT
ZIP 05301
Phone: (802) 254-6611
Fax: (802) 258-4655
- Individual
- Male
- Optometrist
About JOHN DUFF
This page provides the complete NPI Profile along with additional information for John Duff, a provider established in Brattleboro, Vermont with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1629033394 assigned on April 2006. The practitioner's primary taxonomy code is 152W00000X with license number 030000175 (VT). The provider is registered as an individual and his NPI record was last updated 12 years ago.
- NPI
- 1629033394
- Provider Name
- DR. JOHN C DUFF O.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 399 CANAL ST BRATTLEBORO, VT 05301
- Location Phone
- (802) 254-6611
- Location Fax
- (802) 258-4655
- Mailing Address
- 399 CANAL ST BRATTLEBORO, VT 05301
- Mailing Phone
- (802) 254-6611
- Mailing Fax
- (802) 258-4655
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-18-2006
- Last Update Date
- 03-27-2014
- Code Navigator
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
Optometrist
- Taxonomy Code
- 152W00000X
- Type
- Eye and Vision Services Providers
- License No.
- 030000175
- License State
- VT
- Taxonomy Description
- Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 0006601 | MEDICAID (05) | VT | |
| 0175890002 | MEDICARE NSC (07) | VT | |
| VT9295 | MEDICARE PIN (08) | VT | |
| 410003059 | OTHER (01) | VT | RAILROAD MEDICARE |
| 0175890001 | MEDICARE NSC (07) | VT | |
| VT6601 | MEDICARE PIN (08) | VT |
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.
Established patient complete exam of visual system
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
This service was performed 14 times for 14 patientsReviews for DR. JOHN C DUFF O.D.
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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 1629033394, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).
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 66 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1629033394, enumerated as an "individual" on April 18, 2006.
The provider is located at 399 CANAL ST BRATTLEBORO, VT 05301 and the phone number is (802) 254-6611.
Optometrist with taxonomy code 152W00000X.
The provider might be accepting Accepts: Medicare, Medicaid and Railroad Medicare. Please consult your insurance carrier or call the provider to verify.
