DR. PHILLIP ALLEN GELWICK O.D.
NPI 1679620199
Optometrist - Corneal and Contact Management in Tulsa, OK

NPI Status: Active since January 05, 2007

Contact Information

1633 S HARVARD AVE
TULSA, OK
ZIP 74112
Phone: (918) 744-7638
Fax: (918) 744-5384

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  • Individual
  • Male
  • Years of Experience 50
  • Optometrist
  • Corneal and Contact Management
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About PHILLIP GELWICK

This page provides the complete NPI Profile along with additional information for Phillip Gelwick, a provider established in Tulsa, Oklahoma with a medical specialization in Optometrist, focusing in corneal and contact management and more than 50 years of experience. He graduated from Southern College Of Optometry in 1976. The healthcare provider is registered in the NPI registry with number 1679620199 assigned on January 2007. The practitioner's primary taxonomy code is 152WC0802X with license number 908 (OK). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1679620199
Provider Name
DR. PHILLIP ALLEN GELWICK O.D.
Gender
Male
Entity Type
Individual
Location Address
1633 S HARVARD AVE TULSA, OK 74112
Location Phone
(918) 744-7638
Location Fax
(918) 744-5384
Mailing Address
1633 S HARVARD AVE TULSA, OK 74112
Mailing Phone
(918) 744-7638
Mailing Fax
(918) 744-5384
Medical School Name
SOUTHERN COLLEGE OF OPTOMETRY
Graduation Year
1976
Is Sole Proprietor?
Yes
Enumeration Date
01-05-2007
Last Update Date
09-11-2025
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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 Corneal and Contact Management

Taxonomy Code
152WC0802X
Type
Eye and Vision Services Providers
License No.
908
License State
OK
Taxonomy Description
The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

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)
1152W00000XEye and Vision Services Providers

Optometrist

908 (OK)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Blue Focus Bronze POS? 205 - POS
  • Blue Focus Bronze POS? 705 - POS
  • Blue Focus Bronze POS? Standard - POS
  • Blue Focus Gold POS? 207 - POS
  • Blue Focus Gold POS? 902 - POS
  • Blue Focus Gold POS? Standard - POS
  • Blue Focus Silver POS? 206 - POS
  • Blue Focus Silver POS? 903 - POS
  • Blue Focus Silver POS? Standard - POS
  • Blue Preferred Bronze PPO? 201 - PPO
  • Blue Advantage Bronze PPO? 202 - PPO
  • Blue Advantage Bronze PPO? 203 - PPO
  • Blue Advantage Bronze PPO? Standard - PPO
  • Blue Advantage Gold PPO? 309 - PPO
  • Blue Advantage Gold PPO? 604 - PPO
  • Blue Advantage Gold PPO? Standard - PPO
  • Blue Advantage Silver PPO? 204 - PPO
  • Blue Advantage Silver PPO? 501 - PPO
  • Blue Advantage Silver PPO? Standard - PPO
  • Blue Preferred Bronze PPO? Standard - PPO
  • Blue Advantage Bronze HMO? 204 - HMO
  • Blue Advantage Bronze HMO? 301 - HMO
  • Blue Advantage Bronze HMO? Standard - HMO
  • Blue Advantage Gold HMO? 206 - HMO
  • Blue Advantage Gold HMO? 603 - HMO
  • Blue Advantage Gold HMO? Standard - HMO
  • Blue Advantage Plus Bronze? 303 - POS
  • Blue Advantage Plus Bronze? 305 - POS
  • Blue Advantage Plus Bronze? Standard - POS
  • Blue Advantage Plus Gold? 203 - POS
  • BlueCross B16S $50 PCP Copay + $0 virtual care from Teladoc Health� - EPO
  • BlueCross G08S $30 PCP Copay + $0 virtual care from Teladoc Health � - EPO
  • BlueCross S26S $40 PCP Copay + $0 virtual care from Teladoc Health� - EPO
  • Ascension St. John Empower Silver - HMO
  • Ascension St. John Empower Silver Standardized - HMO
  • CommunityCare Bronze IH223 - HMO
  • CommunityCare Bronze IH224 - HMO
  • CommunityCare Catastrophic - HMO
  • CommunityCare Expanded Bronze Standardized - HMO
  • CommunityCare Gold IH221 - HMO
  • CommunityCare Gold L21 - HMO
  • CommunityCare Gold Standardized - HMO
  • CommunityCare Silver L21 - HMO
  • 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

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Phillip Gelwick 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.

Phillip Gelwick 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: 9830233899

    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: I20100215000736

    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.

Cataract surgery

Cataract surgery is a procedure to remove the lens of your eye when it becomes cloudy, which is called a cataract. A synthetic lens is then inserted to restore clear vision. The operation is typically done on an outpatient basis and is very safe and effective.

This service was performed for 1-10 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 34 times for 28 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 26 times for 26 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 130 times for 129 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 28 times for 24 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 12 times for 12 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $30.76 for a new patient copayment and $16.62 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 74112 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $123.06
  • Minimum New Patient Price $53
  • Maximum New Patient Price $162.61
  • Average New Patient Copayment $30.76
  • Minimum New Patient Copayment $13.25
  • Maximum New Patient Copayment $40.65

Established Patients Visit Costs *

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

  • Average Established Patient Price $66.48
  • Minimum Established Patient Price $16.68
  • Maximum Established Patient Price $132.4
  • Average Established Patient Copayment $16.62
  • Minimum Established Patient Copayment $4.17
  • Maximum Established Patient Copayment $33.1

* 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 1679620199, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
2
Unchanged
Pos 7
0
Doubled → 0
Pos 8
1
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 9 → 18 → 9

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 + 2 + 0 + 1 + 1 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1679620199.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Optometrist
1633 S HARVARD AVE
TULSA, OK 74112

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679620199, enumerated as an "individual" on January 05, 2007.

The provider is located at 1633 S HARVARD AVE TULSA, OK 74112 and the phone number is (918) 744-7638.

Optometrist with taxonomy code 152WC0802X and a focus in Corneal and Contact Management.

The provider might be accepting Accepts: Blue Cross and Blue Shield of Montana, Blue Cross. Please consult your insurance carrier or call the provider to verify.