Dr. William S Lim , MD
Ophthalmology • El Paso, TX
5005 N Piedras St, Wbamc Ophthalmology Clinic, 2178
El Paso, TX 799205001
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 October 12, 2006; this date does not establish years in practice.
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Published CMS data list 12 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 99214 — Established patient outpatient office visit: 12 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 2,083 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost — 562 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) — 425 prescription fills, including refills.
- Prednisolone Acetate — 339 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 11 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Ophthalmology in El Paso, TX (2024, 17 clinicians with data). Median for this group: 2,041. Middle half: 185 to 4,022.
More Part D prescriptions than 70% of clinicians listed under Ophthalmology in Texas (2024, 1,065 clinicians with data). Median for this group: 905. Middle half: 327 to 2,157.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 1,312 in 2020 to 2,083 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
5005 N Piedras St
Wbamc Ophthalmology Clinic, 2178
El Paso, TX 799205001
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 1 group name: Southern California Permanente Medical Group. 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
1999
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $1,613 in 2022
The total amount Medicare approved for these services in 2022. 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 – by Provider and Service, 2022.
Paid by Medicare
About $702 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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 – by Provider and Service, 2022.
30-day fills
5,313 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
$74,106 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $287.23 across 4 records.
By nature of payment
- Food and Beverage: $287.23 across 4 records.
Reporting-company totals
- Alcon Vision LLC: $144.95 across 1 record.
- Abbott Laboratories: $142.28 across 3 records.
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
27 years (graduated 1999)
CMS Doctors and Clinicians data list 1999 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
2006
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, “Does your provider accept Medicare as full payment?”
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. Lim 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. Lim 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 El Paso and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Ophthalmology in El Paso, TX (2024, 17 clinicians with data). Median for this group: 2,041. Middle half: 185 to 4,022.
More Part D prescriptions than 70% of clinicians listed under Ophthalmology in Texas (2024, 1,065 clinicians with data). Median for this group: 905. Middle half: 327 to 2,157.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Ophthalmology in El Paso, TX (2024, 17 clinicians with data). Median for this group: $172,001. Middle half: $19,176 to $651,075.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 1,065 clinicians with data). Median for this group: $73,797. Middle half: $14,089 to $240,265.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Lim are from 2022.
30 active clinicians are listed under Ophthalmology with a practice address in El Paso, TX (1,517 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in El Paso
0% of these 30 clinicians have the CMS telehealth indicator.
60% of these 30 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
CMS data for Medicare Part B services are available for 2022 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2022 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2022 only.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 59% from 1,312 in 2020 to 2,083 in 2024.
- 2020: 1,312
- 2021: 1,402
- 2022: 1,791
- 2023: 1,892
- 2024: 2,083
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30-day fills
30-day fills increased 71% from 3,102 in 2020 to 5,313 in 2024.
- 2020: 3,102
- 2021: 3,383
- 2022: 4,210
- 2023: 4,627
- 2024: 5,313
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Part D drug cost
Part D drug cost stayed about the same: $67,783 in 2020 and $74,106 in 2024.
- 2020: $67,783
- 2021: $75,776
- 2022: $79,990
- 2023: $60,726
- 2024: $74,106
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $17.24 in 2020 to $287.23 in 2025.
- 2020: $17.24
- 2022: $200.19
- 2023: $121.81
- 2024: $121.42
- 2025: $287.23
Sources: CMS Medicare Physician & Other Practitioners (2022), 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 · 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 – December 31, 2025): fewer than 11 records totaling $287.23.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Clareon PanOptix Pro | General | $144.95 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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DIAMONDBACK CORONARY | General | $140.00 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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XIENCE SKYPOINT | General | $1.14 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
|
XIENCE SKYPOINT | General | $1.14 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021 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 – by Provider and Service data, 2022; 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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12 | 11 | $258.00 | $134.42 |
Source: CMS Part B by Provider and Service, 2022; 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 | 562 | 54,902 | $8,914.34 | 226 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 425 | 41,500 | $10,909.56 | 146 |
| Prednisolone Acetate | Prednisolone Acetate | 339 | 14,653 | $23,041.54 | 234 |
| Ofloxacin | Ofloxacin | 247 | 4,270 | $3,528.78 | 209 |
| Brimonidine Tartrate | Brimonidine Tartrate | 216 | 16,844 | $5,626.77 | 90 |
| Timolol Maleate | Timolol Maleate | 142 | 14,025 | $2,238.78 | 60 |
| Cyclosporine | Cyclosporine | 62 | 2,580 | $7,749.88 | 18 |
| Dorzolamide Hcl | Dorzolamide Hcl | 37 | 3,510 | $1,063.49 | 13 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 22 | 968 | $438.66 | 14 |
| Levobunolol Hcl | Levobunolol Hcl | 17 | 1,600 | $890.05 | — |
| Cequa | Cyclosporine | 14 | 570 | $9,703.77 | — |
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: 2021-12-01NUCC 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
I20080428000415
CA
5496833782
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
Southern California Permanente Medical Group
10800 Magnolia Ave, Riverside, CA 925053043
Phone: 9513532000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Vascular Surgery
Doctor of Osteopathic Medicine (D.O.)
Physical Medicine & Rehabilitation
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Career & Practice History
NPI enumerated October 12, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Ophthalmology Specialists in El Paso
- Dr. Dennis Reiter, DO
- Dr. Keak Khauv, MD
- Dr. Michael Foote, MD
- Dr. Mark Gallardo, MD
- Samuel Faith, MDMPH
- Dr. Marc Ellman, MD
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Mailing Address
5005 N Piedras St, Wbamc Ophthalmology Clinic, 2178
El Paso, TX 799205001
Phone: 9155694432