Dr. Eric Randall Chen , MD
Ophthalmology β’ Phoenix, AZ
18325 N Allied Way Ste 100
Phoenix, AZ 850543106
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 29, 2020; this date does not establish years in practice.
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Published CMS data list 31 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Latanoprost β 17 prescription fills, including refills.
- Prednisolone Acetate β 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 16 in 2021 to 31 in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2021β2023.
Practice Location & Contact Primary Location
18325 N Allied Way Ste 100
Phoenix, AZ 850543106
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Baylor College Of Medicine; Millennium Vision Inc. 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
2020
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
42 standardized 30-day fills in 2023
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
$802 in 2023
The total cost of these prescriptions in 2023, 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 β by Provider and Drug, 2023.
Open Payments general payments, program year 2025
All general payments: $844.05 across 12 records.
By nature of payment
- Food and Beverage: $778.13 across 11 records.
- Travel and Lodging: $65.92 across 1 record.
Reporting-company totals (3 largest of 5)
- Alcon Vision LLC: $398.48 across 6 records.
- Glaukos Corporation: $260.09 across 3 records.
- Tarsus Pharmaceuticals, Inc.: $150.00 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 2025 (published June 30, 2026).
Years since graduation
6 years (graduated 2020)
CMS Doctors and Clinicians data list 2020 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
2020
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, βDoes your provider accept Medicare as full payment?β
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. Chen 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. Chen 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 Phoenix and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Chen are from 2023.
92 active clinicians are listed under Ophthalmology with a practice address in Phoenix, AZ (353 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Phoenix
0% of these 92 clinicians have the CMS telehealth indicator.
62% of these 92 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 D prescriptions
Medicare Part D prescriptions went from 16 in 2021 to 31 in 2023.
- 2021: 16
- 2022: 82
- 2023: 31
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30-day fills
30-day fills went from 17 in 2021 to 42 in 2023.
- 2021: 17
- 2022: 102
- 2023: 42
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Part D drug cost
Part D drug cost went from $378 in 2021 to $802 in 2023.
- 2021: $378
- 2022: $1,295
- 2023: $802
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $13.24 in 2024 to $844.05 in 2025.
- 2024: $13.24
- 2025: $844.05
Sources: CMS Medicare Part D Prescribers (2023), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· 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 2025 (payments made January 1 β December 31, 2025): 12 records totaling $844.05.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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β | General | $150.00 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
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iDoseTR | General | $138.05 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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Clareon | General | $126.80 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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UNITY | General | $92.53 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
β | General | $83.43 |
| Alcon Vision LLC |
Travel and Lodging
In-kind items and services
|
β | General | $65.92 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
|
iDoseTR | General | $62.70 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
|
iDoseTR | General | $59.34 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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TRYPTYR | General | $21.09 |
| Dompe US, Inc. |
Food and Beverage
In-kind items and services
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OXERVATE | General | $17.99 |
| Bausch & Lomb Americas Inc. |
Food and Beverage
In-kind items and services
|
ScoutPro Osmolarity System | General | $17.49 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
TRYPTYR | General | $8.71 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 17 | 617 | $284.01 | β |
| Prednisolone Acetate | Prednisolone Acetate | 14 | 535 | $517.76 | β |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-09-25NUCC 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.
NUCC 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.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
NUCC 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
I20251002002370
AZ
2567886138
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
Baylor College Of Medicine
7200 Cambridge St, Houston, TX 770304202
Baylor College Of Medicine
1977 Butler Boulevard, Houston, TX 770304101
Baylor College Of Medicine
1977 Butler Blvd, Houston, TX 770304101
Baylor College Of Medicine
1977 Butler Boulevard 6th Floor, Houston, TX 770304101
Phone: 7137986131
Millennium Vision Inc
18325 N Allied Way, Phoenix, AZ 850543106
Phone: 6029533339
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.)
Ophthalmology
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Ophthalmology
Doctor of Osteopathic Medicine (D.O.)
Optometrist
Doctor of Optometry
Ophthalmology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 18325 N ALLIED WAY STE 100, PHOENIX, AZ 850543106 (Tel: 6024674966)
Registered at 18325 N ALLIED WAY STE 100, PHOENIX, AZ 850543106 (Tel: 6024674966)
Ophthalmology (license number reported to NPPES: TX U9228)
Registered at 1504 TAUB LOOP FL 18, HOUSTON, TX 770301608 (Tel: 7138738890)
Ophthalmology (license number reported to NPPES: NY 326592)
Registered at 601 ELMWOOD AVE, ROCHESTER, NY 146420001 (Tel: 5852733937)
Registered at 601 ELMWOOD AVE BOX 659, ROCHESTER, NY 146420001
NPI status registered as active in NPPES database
Registered at 601 ELMWOOD AVE, AC-5 GENERAL MEDICINE CLINIC 696, ROCHESTER, NY 14642 (Tel: 5852755681)
Registered at 3600 PARK EAST DR APT 531, BEACHWOOD, OH 441224357
Recorded as ERIC CHEN, MD
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 Phoenix
- Dr. Joseph Rappazzo, MD
- Dr. Spencer Moore, MD, PhD
- Dr. Ramyar Torabi, MD
- Dr. James Koster, MD
- Dr. Nathan Kanyinda, MD
- Dr. Richard Isenberg, MD
Mailing Address
18325 N Allied Way Ste 100
Phoenix, AZ 850543106
Phone: 6024674966