DR. STEPHAN L CASSIDY O.D.
NPI 1679630867
Optometrist in Issaquah, WA

NPI Status: Active since January 03, 2007

Contact Information

450 NW GILMAN BLVD
STE 104
ISSAQUAH, WA
ZIP 98027
Phone: (425) 392-8756
Fax: (425) 391-8631

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  • Individual
  • Male
  • Years of Experience 31
  • Optometrist
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About STEPHAN CASSIDY

This page provides the complete NPI Profile along with additional information for Stephan Cassidy, a provider established in Issaquah, Washington with a medical specialization in Optometrist and more than 31 years of experience. He graduated from Illinois College Of Optometry At Chicago in 1995. The healthcare provider is registered in the NPI registry with number 1679630867 assigned on January 2007. The practitioner's primary taxonomy code is 152W00000X with license number 3190 (WA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1679630867
Provider Name
DR. STEPHAN L CASSIDY O.D.
Gender
Male
Entity Type
Individual
Location Address
450 NW GILMAN BLVD STE 104 ISSAQUAH, WA 98027
Location Phone
(425) 392-8756
Location Fax
(425) 391-8631
Mailing Address
450 NW GILMAN BLVD STE 104 ISSAQUAH, WA 98027
Mailing Phone
(425) 392-8756
Mailing Fax
(425) 391-8631
Medical School Name
ILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduation Year
1995
Is Sole Proprietor?
No
Enumeration Date
01-03-2007
Last Update Date
12-19-2007
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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.
3190
License State
WA
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:

  • Core Bronze HSA 10600 - EPO
  • Core Bronze HSA 7500 - EPO
  • Core Bronze HSA 8300 - EPO
  • Core Gold 1500 - EPO
  • Core Gold 3000 - EPO
  • Core Silver 3500 - EPO
  • Core Silver 4500 - EPO
  • Core Silver 5000 - EPO
  • Core Silver 7500 - EPO
  • Core Standard Expanded Bronze HSA - EPO
  • Core Standard Gold - EPO
  • Core Standard Silver - EPO
  • PacificSource Oregon Standard Bronze HSA Plan Core - EPO
  • PacificSource Oregon Standard Gold Plan Core - EPO
  • PacificSource Oregon Standard Silver Plan Core - EPO
  • Premera Blue Cross Alaska One Gold - PPO
  • Premera Blue Cross Preferred Bronze 5800 HSA - PPO
  • Premera Blue Cross Preferred Bronze 6350 - PPO
  • Premera Blue Cross Preferred Gold 1500 - PPO
  • Premera Blue Cross Preferred Silver 4500 - PPO
  • Premera Blue Cross Standard Bronze II - PPO
  • Premera Blue Cross Standard Gold - PPO
  • Premera Blue Cross Standard Silver - PPO
  • Premera Blue Cross Family Dental - PPO
  • Premera Blue Cross Pediatric Dental - PPO
  • Connect 1500 Gold - EPO
  • Connect 6000 Silver - EPO
  • Connect 9800 Bronze - EPO
  • HSA Qualified 7500 Bronze - Choice Network - EPO
  • HSA-E Qualified 7500 Bronze - Signature Network - EPO
  • Providence Oregon Standard Bronze Plan - Choice Network - EPO
  • Providence Oregon Standard Bronze Plan - Signature Network - EPO
  • Providence Oregon Standard Gold Plan - Choice Network - EPO
  • Providence Oregon Standard Gold Plan - Signature Network - EPO
  • Providence Oregon Standard Silver Plan - Choice Network - EPO
  • Providence Oregon Standard Silver Plan - Signature Network - EPO

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
U60209MEDICARE UPIN (02)WA 
2028686MEDICAID (05)WA 
G8864089MEDICARE PIN (08)WA 

Medicare Participation & PECOS Enrollment Status

Stephan Cassidy is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Stephan Cassidy 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

  • PECOS PAC ID: 4284736554

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20070217000057

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • 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

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 212 times for 212 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 45 times for 37 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 74 times for 61 patients

Established patient problem focused exam of visual system

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

This service was performed 115 times for 63 patients

Exam of visual field with extended testing

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

This service was performed 15 times for 15 patients

Extended exam of the back part of the eye with retinal drawing

This procedure involves a detailed examination of the back part of your eye, including the retina. It helps identify any abnormalities or issues. A retinal drawing is made to record findings. It's non-invasive and crucial for maintaining eye health.

This service was performed 13 times for 12 patients

Imaging of optic nerve

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

This service was performed 67 times for 63 patients

Imaging of retina

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

This service was performed 92 times for 87 patients

New patient complete exam of visual system

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

This service was performed 38 times for 38 patients

Photography of content of eyes

Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.

This service was performed 16 times for 11 patients

Removal of cataract with insertion of prosthetic lens

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.

This service was performed 38 times for 23 patients

Removal of recurring cataract in lens capsule using a laser

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

This service was performed 17 times for 14 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $35.94 for a new patient copayment and $19.68 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 98027 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $143.76
  • Minimum New Patient Price $63.67
  • Maximum New Patient Price $189.37
  • Average New Patient Copayment $35.94
  • Minimum New Patient Copayment $15.91
  • Maximum New Patient Copayment $47.34

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $78.74
  • Minimum Established Patient Price $21.12
  • Maximum Established Patient Price $155
  • Average Established Patient Copayment $19.68
  • Minimum Established Patient Copayment $5.28
  • Maximum Established Patient Copayment $38.75

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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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 1679630867, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
0
Doubled → 0
Pos 8
8
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
7
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 7 → 14 → 5 6 → 12 → 3 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 4 + 9 + 1 + 2 + 3 + 0 + 8 + 1 + 2 + 24 = 63

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1679630867.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Dentist (General Practice)
450 NW GILMAN BLVD, STE 103
ISSAQUAH, WA 98027
Pharmacist
450 NW GILMAN BLVD, SUITE 107
ISSAQUAH, WA 98027
Specialist
450 NW GILMAN BLVD, #203
ISSAQUAH, WA 98027
Internal Medicine
450 NW GILMAN BLVD, STE 301A
ISSAQUAH, WA 98027
Internal Medicine
450 NW GILMAN BLVD, SUITE 301A
ISSAQUAH, WA 98027
Specialist
450 NW GILMAN BLVD, STE. 105
ISSAQUAH, WA 98027
Family Medicine
450 NW GILMAN BLVD, SUITE 205
ISSAQUAH, WA 98027
Family Medicine
450 NW GILMAN BLVD, SUITE 301-A
ISSAQUAH, WA 98027
Pharmacy (Community/Retail Pharmacy)
450 NW GILMAN BLVD, STE 107
ISSAQUAH, WA 98027
Podiatrist
450 NW GILMAN BLVD, SUITE 303
ISSAQUAH, WA 98027
Physical Therapist (Orthopedic)
450 NW GILMAN BLVD, SUITE 106
ISSAQUAH, WA 98027
Physician Assistant (Medical)
450 NW GILMAN BLVD, SUITE 205
ISSAQUAH, WA 98027
Family Medicine
450 NW GILMAN BLVD, SUITE 301A
ISSAQUAH, WA 98027
Clinic/Center
450 NW GILMAN BLVD, SUITE 205
ISSAQUAH, WA 98027
Podiatrist
450 NW GILMAN BLVD, SUITE 303
ISSAQUAH, WA 98027
Nurse Practitioner (Family)
450 NW GILMAN BLVD, SUITE 201
ISSAQUAH, WA 98027
Dermatology
450 NW GILMAN BLVD, 301A
ISSAQUAH, WA 98027
Naturopath
450 NW GILMAN BLVD, SUITE 205
ISSAQUAH, WA 98027
Naturopath
450 NW GILMAN BLVD, STE 205
ISSAQUAH, WA 98027
Podiatrist (Foot & Ankle Surgery)
450 NW GILMAN BLVD, 303
ISSAQUAH, WA 98027

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679630867, enumerated as an "individual" on January 03, 2007.

The provider is located at 450 NW GILMAN BLVD STE 104 ISSAQUAH, WA 98027 and the phone number is (425) 392-8756.

Optometrist with taxonomy code 152W00000X.

The provider might be accepting Accepts: PacificSource Health Plans, Premera Blue Cross. Please consult your insurance carrier or call the provider to verify.