JOHN D TWELKER OD, PHD
NPI 1255405940
Optometrist in Tucson, AZ


Quality Rating: 88.66 out of 100 score

NPI Status: Active since November 17, 2006

Contact Information

707 N ALVERNON WAY STE 301
TUCSON, AZ
ZIP 85711
Phone: (520) 694-1460
Fax: (520) 694-1464

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  • Individual
  • Male
  • Years of Experience 34
  • Optometrist
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JOHN TWELKER

This page provides the complete NPI Profile along with additional information for John Twelker, a provider established in Tucson, Arizona with a medical specialization in Optometrist and more than 34 years of experience. He graduated from University Of California - School Of Optometry in 1992. The healthcare provider is registered in the NPI registry with number 1255405940 assigned on November 2006. The practitioner's primary taxonomy code is 152W00000X with license number 1202 (AZ). The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI
1255405940
Provider Name
JOHN D TWELKER OD, PHD
Gender
Male
Entity Type
Individual
Location Address
707 N ALVERNON WAY STE 301 TUCSON, AZ 85711
Location Phone
(520) 694-1460
Location Fax
(520) 694-1464
Mailing Address
2701 E ELVIRA RD TUCSON, AZ 85756
Mailing Phone
(520) 874-3500
Medical School Name
UNIVERSITY OF CALIFORNIA - SCHOOL OF OPTOMETRY
Graduation Year
1992
Is Sole Proprietor?
No
Enumeration Date
11-17-2006
Last Update Date
05-24-2010
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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.
1202
License State
AZ
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:

  • Choice Bronze HSA - HMO
  • Choice Bronze HSA + Vision + Adult Dental - HMO
  • Clear Silver - HMO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Complete Silver - HMO
  • Complete Silver + Vision + Adult Dental - HMO
  • Elite Gold - HMO
  • Elite Gold + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • BannerAetna Bronze 2 HSA: No PCP required + 98point6 virtual care 24/7 - HMO
  • BannerAetna Bronze 4: No PCP required + $0 PCP + free 98.6 virtual care 24/7 + Adult Dental + Vision - HMO
  • BannerAetna Bronze 4: No PCP required + $0 PCP + free 98point6 virtual care 24/7 - HMO
  • BannerAetna Bronze S: No PCP required + free 98point6 virtual care 24/7 - HMO
  • BannerAetna Gold 10: No PCP required + $0 PCP + free 98.6 virtual care 24/7 + Adult Dental + Vision - HMO
  • BannerAetna Gold 10: No PCP required + $0 PCP + free 98point6 virtual care 24/7 - HMO
  • BannerAetna Gold 3: No PCP required + free 98point6 virtual care 24/7 - HMO
  • BannerAetna Gold 3: No PCP required + free 98point6 virtual care 24/7 + Adult Dental + Vision - HMO
  • BannerAetna Gold S: No PCP required + free 98point6 virtual care 24/7 - HMO
  • BannerAetna Silver 10: No PCP required + $0 PCP + free 98.6 virtual care 24/7 + Adult Dental +Vision - HMO
  • Blue ACA StandardHealth Silver with Health Choice - HMO
  • Blue AdvanceHealth Bronze - Neighborhood Network - HMO
  • Blue AdvanceHealth Gold - Neighborhood Network - HMO
  • Blue AdvanceHealth Silver - Neighborhood Network - HMO
  • Blue EverydayHealth Gold - Neighborhood Network - HMO
  • Blue EverydayHealth Silver - Neighborhood Network - HMO
  • Blue Portfolio HSA Bronze - Neighborhood Network - HMO
  • Blue StandardHealth Bronze - Neighborhood Network - HMO
  • Blue StandardHealth Gold - Neighborhood Network - HMO
  • Blue StandardHealth Silver - Neighborhood Network - HMO
  • UHC Bronze Standard - HMO
  • UHC Gold Standard - HMO
  • UHC Silver Standard - HMO

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
U40871MEDICARE UPIN (02) 
70963MEDICARE ID-TYPE UNSPECIFIED (04) 
709090MEDICAID (05)AZ 

Medicare Participation & PECOS Enrollment Status

John Twelker 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.

John Twelker 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: 3072642321

    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: I20210203002871

    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 112 times for 110 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 13 times for 13 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 29 times for 29 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $31.92 for a new patient copayment and $17.31 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 85711 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $127.71
  • Minimum New Patient Price $55.44
  • Maximum New Patient Price $168.6
  • Average New Patient Copayment $31.92
  • Minimum New Patient Copayment $13.86
  • Maximum New Patient Copayment $42.15

Established Patients Visit Costs *

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

  • Average Established Patient Price $69.24
  • Minimum Established Patient Price $17.72
  • Maximum Established Patient Price $137.41
  • Average Established Patient Copayment $17.31
  • Minimum Established Patient Copayment $4.43
  • Maximum Established Patient Copayment $34.35

* 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.

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 88.66, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 88.66 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: N/A

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: 100

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: 62.2

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: 62.2

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

Reviews for JOHN D TWELKER OD, PHD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1255405940
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
22105801098
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 2 + 1 + 0 + 5 + 8 + 0 + 1 + 0 + 9 + 8 + 24 = 60
Step 3: because the number obtained in step 2 ends in zero, the check digit is zero.
0

The NPI number 1255405940 is valid because the calculated check digit 0 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 10 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1699863282 JOSEPH M MILLER MD
Individual
Ophthalmology707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1902978372 RAND W SIEKERT OD
Individual
Optometrist707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1629142336 ROXANA URSEA MD
Individual
Ophthalmology707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1821137530DR. RITA M BHAKTA O.D.
Individual
Optometrist707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1942780267DR. MIREILLE JABROUN MD
Individual
Ophthalmology (Pediatric Ophthalmology and Strabismus Specialist)707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1891438792 ANDREW C DIEU MD
Individual
Student in an Organized Health Care Education/Training Program707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1104483338DR. BURKE LIEPPMAN OD
Individual
Optometrist707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460
1952807810 ROY DAVID SWANSON MD
Individual
Ophthalmology707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 626-2010
1336704410 ELHAM GHAHARI
Individual
Ophthalmology (Glaucoma Specialist)707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(312) 843-9158
1922820935BANNER-UNIVERSITY MEDICAL GROUP
Organization
Durable Medical Equipment & Medical Supplies707 N ALVERNON WAY STE 301
TUCSON, AZ 85711
(520) 694-1460

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255405940, enumerated in the NPI registry as an "individual" on November 17, 2006

The provider is located at 707 N Alvernon Way Ste 301 Tucson, Az 85711 and the phone number is (520) 694-1460

The provider's speciality is Optometrist with taxonomy code 152W00000X

The provider has more than 34 years of experience. He graduated from University Of California - School Of Optometry in 1992.

The provider might be accepting Accepts: Ambetter from Arizona Complete Health,. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME) and a Home Health Agency (HHA).

The provider has an overall high rating in the following quality measures: uses technology to exchange and make use of healthcare information.

Medicare beneficiaries should expect a typical cost of $127.71 with an average copayment of $31.92 for new patient appointments. Established patients should expect a typical charge of $69.24 and an average copayment of 17.31. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Established patient complete exam of visual system, Established patient office or other outpatient visit, 20-29 minutes and New patient complete exam of visual system.

This NPI record was last updated on November 17, 2006. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.