Dr. Chase Warner , DO
Ophthalmology โข Mesa, AZ
220 S 63rd St
Mesa, AZ 852061619
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 13, 2016; this date does not establish years in practice.
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Published CMS data list 361 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 110 service units.
- 92134 โ Imaging of retina: 78 service units.
- 99213 โ Established patient outpatient office visit: 56 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 8 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 219 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost โ 63 prescription fills, including refills.
- Prednisolone Acetate โ 47 prescription fills, including refills.
- Ketorolac Tromethamine โ 40 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 95% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: 1,646. Middle half: 1,184 to 3,534.
Fewer Medicare Part B services than 85% of clinicians listed under Ophthalmology in Arizona (2024, 224 clinicians with data). Median for this group: 2,115. Middle half: 1,040 to 3,509.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 103 in 2020 to 361 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
220 S 63rd St
Mesa, AZ 852061619
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Chandler, AZ. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm; Dhhs Ihs Phoenix Area. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2016
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
157 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $35,410 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $25,540 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
345 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$5,977 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2019
All general payments: $137.18 across 2 records.
By nature of payment
- Food and Beverage: $137.18 across 2 records.
Reporting-company totals
- Alexion Pharmaceuticals, Inc.: $121.85 across 1 record.
- Shire North American Group Inc: $15.33 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2019 (published June 30, 2026).
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2016
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Warner has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Warner as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Mesa and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 95% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: 1,646. Middle half: 1,184 to 3,534.
Fewer Medicare Part B services than 85% of clinicians listed under Ophthalmology in Arizona (2024, 224 clinicians with data). Median for this group: 2,115. Middle half: 1,040 to 3,509.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: $254,959. Middle half: $156,050 to $446,338.
A lower Medicare-allowed amount than 85% of clinicians listed under Ophthalmology in Arizona (2024, 224 clinicians with data). Median for this group: $256,049. Middle half: $132,587 to $448,948.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: $176,141. Middle half: $110,924 to $335,873.
A lower Medicare payment amount than 85% of clinicians listed under Ophthalmology in Arizona (2024, 224 clinicians with data). Median for this group: $189,644. Middle half: $91,683 to $334,260.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: 632. Middle half: 281 to 1,148.
Fewer Part D prescriptions than 80% of clinicians listed under Ophthalmology in Arizona (2024, 231 clinicians with data). Median for this group: 825. Middle half: 320 to 1,750.
Part D drug cost
A lower Part D drug cost than 75% of clinicians listed under Ophthalmology in Mesa, AZ (2024, 21 clinicians with data). Median for this group: $15,360. Middle half: $5,977 to $61,429.
A lower Part D drug cost than 80% of clinicians listed under Ophthalmology in Arizona (2024, 231 clinicians with data). Median for this group: $54,057. Middle half: $10,893 to $153,679.
28 active clinicians are listed under Ophthalmology with a practice address in Mesa, AZ (353 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mesa
3.6% of these 28 clinicians have the CMS telehealth indicator.
71.4% of these 28 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 250% from 103 in 2020 to 361 in 2024.
- 2020: 103
- 2021: 402
- 2022: 386
- 2023: 353
- 2024: 361
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Medicare-allowed amount
Medicare-allowed amount increased 495% from $5,953 in 2020 to $35,410 in 2024.
- 2020: $5,953
- 2021: $28,444
- 2022: $45,384
- 2023: $36,456
- 2024: $35,410
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Paid by Medicare
Paid by Medicare increased 453% from $4,619 in 2020 to $25,540 in 2024.
- 2020: $4,619
- 2021: $18,738
- 2022: $34,980
- 2023: $27,920
- 2024: $25,540
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 192% from 75 in 2020 to 219 in 2024.
- 2020: 75
- 2021: 117
- 2022: 252
- 2023: 274
- 2024: 219
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30-day fills
30-day fills increased 207% from 112 in 2020 to 345 in 2024.
- 2020: 112
- 2021: 196
- 2022: 325
- 2023: 371
- 2024: 345
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Part D drug cost
Part D drug cost increased 175% from $2,174 in 2020 to $5,977 in 2024.
- 2020: $2,174
- 2021: $12,822
- 2022: $13,382
- 2023: $11,702
- 2024: $5,977
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2019), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2019 (payments made January 1 โ December 31, 2019): fewer than 11 records totaling $137.18.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Alexion Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
โ | General | $121.85 |
| Shire North American Group Inc |
Food and Beverage
In-kind items and services
|
XIIDRA | General | $15.33 |
Source: CMS Open Payments, program year 2019, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2020โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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110 | 86 | $122.89 | $93.29 |
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92134
Imaging of retina
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78 | 54 | $38.47 | $23.61 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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56 | 40 | $86.89 | $63.24 |
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67028
Injection of drug into eye
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31 | 15 | $120.77 | $98.93 |
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76519
Ultrasound scan to determine eye length and lens power
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25 | 25 | $64.00 | $28.77 |
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66984
Removal of cataract with insertion of prosthetic lens
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24 | 17 | $511.75 | $503.56 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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22 | 22 | $159.82 | $127.86 |
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92014
Established patient complete exam of visual system
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15 | 15 | $145.33 | $72.02 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 63 | 4,834 | $1,398.20 | 27 |
| Prednisolone Acetate | Prednisolone Acetate | 47 | 690 | $1,813.54 | 28 |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 40 | 635 | $1,069.54 | 25 |
| Moxifloxacin | Moxifloxacin Hcl | 39 | 413 | $1,113.56 | 25 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 17 | 1,090 | $386.53 | โ |
| Dorzolamide Hcl | Dorzolamide Hcl | 13 | 610 | $195.65 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-04-20NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20260505000369
AZ
5698066603
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Dhhs Ihs Phoenix Area
200 W Hospital Dr, Whiteriver, AZ 859410860
Phone: 92833849113532
Dhhs Ihs Phoenix Area
Po Box, Whiteriver, AZ 859410860
Dhhs Ihs Phoenix Area
P O Box, Whiteriver, AZ 859410860
Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm
4212 N 16th St, Phoenix, AZ 850165319
Phone: 6022631200
Secondary Practice Locations
3940 S Alma School Rd Ste 3
Chandler, AZ 852484513
Phone: 4806413937
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Ophthalmology
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Optometrist
Doctor of Optometry
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology - Cornea and External Diseases Specialist
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 220 S 63RD ST, MESA, AZ 852061619 (Tel: 4806413937)
Registered at PO BOX 200414, DALLAS, TX 753200414 (Tel: 4806413937)
Ophthalmology (license number reported to NPPES: AZ 008955)
Registered at 4212 N 16TH ST, PHOENIX, AZ 850165319 (Tel: 6022631200)
Registered at 9960 E STROBE AVE, MESA, AZ 852129256 (Tel: 8016027921)
NPI status registered as active in NPPES database
Registered at 405 W GRAND AVE, DAYTON, OH 454054720 (Tel: 9377233245)
Registered at 18683 E OAK HILL LN, QUEEN CREEK, AZ 851423665
Recorded as CHASE WARNER, D.O.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Mesa
- Dr. Ronald Hobbs, MD
- Dr. Craig Cassidy, DO
- Dr. Michael Herion, MD
- Dr. Daniel Churgin, MD
- Dr. Joshua Brozek, MD
- Dr. Matthew Hammond, MD
Mailing Address
Po Box 200414
Dallas, TX 753200414
Phone: 4806413937