Dr. Michael Dang Pham , DO
Ophthalmology โข Rancho Cucamonga, CA
9616 Archibald Ave Ste 140
Rancho Cucamonga, CA 917307939
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 6, 2016; this date does not establish years in practice.
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Published CMS data list 78 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:
- 92012 โ Established patient problem focused exam of visual system: 29 service units.
- 99204 โ New patient outpatient office visit: 24 service units.
- 92133 โ Imaging of optic nerve: 14 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 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 697 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 258 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) โ 84 prescription fills, including refills.
- Timolol Maleate โ 77 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 13 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in California (2024, 1,572 clinicians with data). Median for this group: 1,776. Middle half: 600 to 3,873.
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 29 in 2022 to 78 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2024.
Practice Location & Contact Primary Location
9616 Archibald Ave Ste 140
Rancho Cucamonga, CA 917307939
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Pomona, CA; Rancho Cucamonga, CA. See the list
Source: CMS NPPES NPI Registry, practice location records; 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
39 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 $8,777 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 $6,240 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
1,335 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
$39,643 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 2025
All general payments: $112.48 across 4 records.
By nature of payment
- Food and Beverage: $96.30 across 3 records.
- Entertainment: $16.18 across 1 record.
Reporting-company totals (3 largest of 4)
- ACADIA Pharmaceuticals Inc: $56.59 across 1 record.
- Astellas Pharma US Inc: $23.26 across 1 record.
- Alcon Vision LLC: $16.45 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
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. Pham 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. Pham 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 Rancho Cucamonga and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in California (2024, 1,572 clinicians with data). Median for this group: 1,776. Middle half: 600 to 3,873.
Too few clinicians listed under Ophthalmology in Rancho Cucamonga have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Ophthalmology in California (2024, 1,572 clinicians with data). Median for this group: $209,264. Middle half: $67,828 to $437,264.
Too few clinicians listed under Ophthalmology in Rancho Cucamonga have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Ophthalmology in California (2024, 1,572 clinicians with data). Median for this group: $152,036. Middle half: $48,721 to $320,363.
Too few clinicians listed under Ophthalmology in Rancho Cucamonga have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Ophthalmology in California (2024, 1,966 clinicians with data). Median for this group: 1,025. Middle half: 297 to 2,233.
Too few clinicians listed under Ophthalmology in Rancho Cucamonga have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Ophthalmology in California (2024, 1,966 clinicians with data). Median for this group: $79,352. Middle half: $13,075 to $224,408.
Too few clinicians listed under Ophthalmology in Rancho Cucamonga have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Ophthalmology with a practice address in Rancho Cucamonga, CA (2,902 in California).
Addresses are self-reported to NPPES and may be out of date.
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 169% from 29 in 2022 to 78 in 2024.
- 2022: 29
- 2023: 15
- 2024: 78
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Medicare-allowed amount
Medicare-allowed amount increased 221% from $2,737 in 2022 to $8,777 in 2024.
- 2022: $2,737
- 2023: $2,575
- 2024: $8,777
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Paid by Medicare
Paid by Medicare increased 207% from $2,033 in 2022 to $6,240 in 2024.
- 2022: $2,033
- 2023: $1,936
- 2024: $6,240
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 381% from 145 in 2019 to 697 in 2024.
- 2019: 145
- 2020: 96
- 2022: 232
- 2023: 529
- 2024: 697
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30-day fills
30-day fills increased 314% from 322 in 2019 to 1,335 in 2024.
- 2019: 322
- 2020: 211
- 2022: 317
- 2023: 970
- 2024: 1,335
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Part D drug cost
Part D drug cost increased 88% from $21,134 in 2019 to $39,643 in 2024.
- 2019: $21,134
- 2020: $12,338
- 2022: $16,532
- 2023: $23,965
- 2024: $39,643
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $203.13 in 2022 to $112.48 in 2025.
- 2022: $203.13
- 2024: $41.76
- 2025: $112.48
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $112.48.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ACADIA Pharmaceuticals Inc |
Food and Beverage
In-kind items and services
|
DAYBUE | General | $56.59 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
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Izervay | General | $23.26 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Clareon | General | $16.45 |
| Optos, Inc. |
Entertainment
In-kind items and services
|
NFC-700 | General | $16.18 |
Source: CMS Open Payments, program year 2025, 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 2021โ2023 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, 2022โ2024; 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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92012
Established patient problem focused exam of visual system
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29 | 17 | $204.00 | $92.75 |
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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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24 | 24 | $365.00 | $171.75 |
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92133
Imaging of optic nerve
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14 | 13 | $83.00 | $37.76 |
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92014
Established patient complete exam of visual system
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11 | 11 | $286.00 | $130.64 |
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 | 258 | 17,762 | $3,303.25 | 85 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 84 | 5,655 | $1,702.14 | 28 |
| Timolol Maleate | Timolol Maleate | 77 | 5,240 | $2,119.59 | 25 |
| Prednisolone Acetate | Prednisolone Acetate | 56 | 1,899 | $1,759.28 | 33 |
| Brimonidine Tartrate | Brimonidine Tartrate | 46 | 2,423 | $1,992.23 | 14 |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 40 | 1,192 | $915.72 | 26 |
| Moxifloxacin | Moxifloxacin Hcl | 24 | 306 | $368.89 | 18 |
| Restasis | Cyclosporine | 22 | 900 | $19,488.17 | โ |
| Cyclosporine | Cyclosporine | 22 | 840 | $6,908.41 | โ |
| Erythromycin | Erythromycin Base | 21 | 260 | $364.27 | 15 |
| Dorzolamide Hcl | Dorzolamide Hcl | 18 | 1,248 | $472.17 | โ |
| Ofloxacin | Ofloxacin | 17 | 403 | $200.72 | 13 |
| Azelastine Hcl | Azelastine Hcl | 12 | 346 | $47.66 | 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: 2022-06-13NUCC 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: 207WX0110X
An ophthalmologist who specializes in pediatric ophthalmology and strabismus management. The subspecialty includes the medical and surgical management of eye disorders found in children. Some of the more common disorders include amblyopia, strabismus, refractive error, cataract and glaucoma. These disorders may be related to neurological and endocrinological diseases, trauma, or aging changes in the extraocular muscles requiring medical, optical and surgical management.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20211015001183
CA
8729405634
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1866 N Orange Grove Ave Ste 104
Pomona, CA 917673042
Phone: 9093981550
9190 Haven Ave Ste 200
Rancho Cucamonga, CA 917305431
Phone: 9094810436
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 9616 ARCHIBALD AVE STE 140, RANCHO CUCAMONGA, CA 917307939 (Tel: 9094810436)
Ophthalmology (license number reported to NPPES: DC DO034915)
Registered at 840 TOWNE CENTER DR, POMONA, CA 917675900 (Tel: 9095051078)
Registered at 9190 HAVEN AVE STE 200, RANCHO CUCAMONGA, CA 917305431 (Tel: 9094810436)
Registered at 148 CHESTNUT HILL PL, CLAREMONT, CA 917111832 (Tel: 9092627926)
Recorded as MICHAEL PHAM, DO
Ophthalmology (license number reported to NPPES: CA 20A19100)
Registered at PO BOX 744785, ATLANTA, GA 303744785 (Tel: 2024765000)
Ophthalmology (license number reported to NPPES: DC DO034915)
Registered at 111 MICHIGAN AVE NW, WASHINGTON, DC 200102916 (Tel: 2024763015)
NPI status registered as active in NPPES database
Registered at 2150 PENNSYLVANIA AVE NW, WASHINGTON, DC 200373201 (Tel: 2027413000)
Registered at 2150 PENNSYLVANIA AVE NW, WASHINGTON, DC 200373201
Recorded as MICHAEL PHAM, D.O.
Student in an Organized Health Care Education/Training Program
NPI status registered as active in NPPES database
Registered at 400 W MINERAL KING AVE, VISALIA, CA 932916237 (Tel: 5596242000)
Registered at 400 W MINERAL KING AVE, VISALIA, CA 932916237
Recorded as MICHAEL PHAM, D.O.
Student in an Organized Health Care Education/Training Program (license number reported to NPPES: CA B9887502)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Rancho Cucamonga
Healthcare providers in Rancho CucamongaMailing Address
840 Towne Center Dr
Pomona, CA 917675900
Phone: 9095051078