Dr. Sameer I Ahmad , MD
Ophthalmology • Herndon, VA
171 Elden St Ste 100
Herndon, VA 201704834
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 20, 2006; this date does not establish years in practice.
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Published CMS data list 2,834 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – 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 — Established patient outpatient office visit: 638 service units.
- G2211 — Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 492 service units.
- 92083 — Exam of visual field with extended testing: 423 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 18 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 3,144 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 — 721 prescription fills, including refills.
- Timolol Maleate — 446 prescription fills, including refills.
- Brimonidine Tartrate — 376 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 28 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Ophthalmology in Virginia (2024, 371 clinicians with data). Median for this group: 2,382. Middle half: 859 to 4,452.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,616 in 2020 to 2,834 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
171 Elden St Ste 100
Herndon, VA 201704834
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 3 distinct additional practice-address records in Centreville, VA; Herndon, VA; Winchester, VA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Glaucoma Consultants Of Washington, Inc; Howard University. 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
Tufts University School Of Medicine
1994
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
547 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 – by Provider, 2024.
Medicare-allowed amount
About $269,689 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 – by Provider and Service, 2024.
Paid by Medicare
About $203,071 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 – by Provider and Service, 2024.
30-day fills
6,624 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
$279,785 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: $218.25 across 4 records.
By nature of payment
- Food and Beverage: $218.25 across 4 records.
Reporting-company totals
- Glaukos Corporation: $188.68 across 3 records.
- Alcon Vision LLC: $29.57 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
32 years (graduated 1994)
CMS Doctors and Clinicians data list 1994 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. Ahmad 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. Ahmad 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 Herndon and Virginia
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Ophthalmology in Virginia (2024, 371 clinicians with data). Median for this group: 2,382. Middle half: 859 to 4,452.
Too few clinicians listed under Ophthalmology in Herndon have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Ophthalmology in Virginia (2024, 371 clinicians with data). Median for this group: $269,689. Middle half: $95,530 to $534,401.
Too few clinicians listed under Ophthalmology in Herndon have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Ophthalmology in Virginia (2024, 371 clinicians with data). Median for this group: $197,777. Middle half: $67,054 to $388,179.
Too few clinicians listed under Ophthalmology in Herndon have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Ophthalmology in Virginia (2024, 388 clinicians with data). Median for this group: 835. Middle half: 328 to 1,699.
Too few clinicians listed under Ophthalmology in Herndon have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Ophthalmology in Virginia (2024, 388 clinicians with data). Median for this group: $59,096. Middle half: $14,505 to $172,131.
Too few clinicians listed under Ophthalmology in Herndon have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under Ophthalmology with a practice address in Herndon, VA (592 in Virginia).
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 stayed about the same: 2,616 in 2020 and 2,834 in 2024.
- 2020: 2,616
- 2021: 2,792
- 2022: 3,189
- 2023: 2,763
- 2024: 2,834
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $246,939 in 2020 and $269,689 in 2024.
- 2020: $246,939
- 2021: $325,721
- 2022: $341,985
- 2023: $307,676
- 2024: $269,689
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Paid by Medicare
Paid by Medicare increased 10% from $184,493 in 2020 to $203,071 in 2024.
- 2020: $184,493
- 2021: $250,711
- 2022: $251,746
- 2023: $224,793
- 2024: $203,071
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 21% from 2,593 in 2020 to 3,144 in 2024.
- 2020: 2,593
- 2021: 2,807
- 2022: 3,613
- 2023: 3,574
- 2024: 3,144
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30-day fills
30-day fills increased 41% from 4,702 in 2020 to 6,624 in 2024.
- 2020: 4,702
- 2021: 5,620
- 2022: 7,581
- 2023: 7,641
- 2024: 6,624
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Part D drug cost
Part D drug cost varied from year to year: $275,030 in 2020 and $279,785 in 2024.
- 2020: $275,030
- 2021: $305,013
- 2022: $397,761
- 2023: $397,312
- 2024: $279,785
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $18.99 in 2021 to $218.25 in 2025.
- 2021: $18.99
- 2022: $52.62
- 2023: $41.47
- 2024: $95.43
- 2025: $218.25
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 · 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 $218.25.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
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iDoseTR | General | $136.08 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
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iDoseTR | General | $47.61 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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Rocklatan | General | $29.57 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
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iDoseTR | General | $4.99 |
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 2016–2023 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, 2017–2024; 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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638 | 339 | $231.51 | $142.83 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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492 | 289 | $32.65 | $17.97 |
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92083
Exam of visual field with extended testing
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423 | 367 | $111.98 | $71.68 |
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92133
Imaging of optic nerve
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348 | 339 | $81.70 | $37.99 |
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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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340 | 259 | $165.28 | $102.42 |
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92020
Exam of the internal drainage system of eye
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149 | 138 | $51.38 | $30.27 |
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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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96 | 96 | $324.55 | $181.93 |
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76514
Ultrasound scan of cornea to determine thickness
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95 | 93 | $30.09 | $11.89 |
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65855
Laser repair to improve eye fluid flow
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53 | 48 | $774.96 | $281.57 |
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92134
Imaging of retina
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38 | 32 | $84.39 | $45.28 |
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92145
Measurement of corneal pressure
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26 | 25 | $31.54 | $13.55 |
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92136
Measurement of corneal curvature and depth of eye
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25 | 23 | $152.68 | $54.04 |
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66180
Creation of shunt to improve eye fluid flow using tissue graft
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24 | 22 | $2592.22 | $1257.85 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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24 | 24 | $215.00 | $123.99 |
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66984
Removal of cataract with insertion of prosthetic lens
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18 | 14 | $1746.00 | $433.99 |
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92082
Exam of visual field with intermediate testing
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17 | 16 | $108.59 | $52.43 |
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92499
Other service or procedure on eye
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15 | 15 | $43.60 | $11.38 |
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66250
Revision or repair of operative wound of eye
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13 | 13 | $1395.00 | $605.22 |
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 | 721 | 47,984 | $7,747.42 | 303 |
| Timolol Maleate | Timolol Maleate | 446 | 32,757 | $3,782.23 | 214 |
| Brimonidine Tartrate | Brimonidine Tartrate | 376 | 26,943 | $5,427.76 | 184 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 271 | 19,583 | $4,259.64 | 112 |
| Dorzolamide Hcl | Dorzolamide Hcl | 208 | 15,054 | $4,456.14 | 99 |
| Prednisolone Acetate | Prednisolone Acetate | 201 | 7,447 | $13,082.30 | 115 |
| Lumigan | Bimatoprost | 140 | 8,478 | $76,178.89 | 58 |
| Rhopressa | Netarsudil Mesylate | 100 | 5,386 | $60,477.09 | 52 |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 89 | 2,693 | $2,211.65 | 63 |
| Ofloxacin | Ofloxacin | 79 | 2,353 | $1,105.32 | 73 |
| Atropine Sulfate | Atropine Sulfate | 59 | 2,338 | $1,964.10 | 52 |
| Acetazolamide | Acetazolamide | 52 | 1,385 | $942.44 | 36 |
| Rocklatan | Netarsudil Mesylat/Latanoprost | 46 | 2,750 | $29,161.23 | 23 |
| Erythromycin | Erythromycin Base | 45 | 775 | $556.74 | 23 |
| Brinzolamide | Brinzolamide | 44 | 2,776 | $6,870.35 | 22 |
| Brimonidine Tartrate-Timolol | Brimonidine Tartrate/Timolol | 40 | 2,509 | $4,269.81 | 17 |
| Travoprost | Travoprost | 37 | 2,614 | $7,796.77 | 14 |
| Dorzolamide-Timolol | Dorzolamide/Timolol/Pf | 27 | 1,560 | $4,275.00 | 11 |
| Alphagan P | Brimonidine Tartrate | 22 | 1,398 | $10,289.41 | — |
| Timolol Maleate | Timolol Maleate/Pf | 20 | 990 | $4,585.77 | — |
| Doxycycline Hyclate | Doxycycline Hyclate | 19 | 765 | $479.93 | — |
| Moxifloxacin | Moxifloxacin Hcl | 18 | 283 | $449.53 | 14 |
| Combigan | Brimonidine Tartrate/Timolol | 17 | 1,125 | $8,192.92 | — |
| Tafluprost | Tafluprost/Pf | 17 | 870 | $2,074.41 | — |
| Vyzulta | Latanoprostene Bunod | 16 | 1,006 | $8,343.39 | — |
(top 25 shown)
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: 2026-06-19NUCC 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
I20090414000382
VA
0446219752
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
Howard University
2041 Georgia Nw Ave, Washington, DC 200600001
Phone: 2028656679
Glaucoma Consultants Of Washington, Inc
171 Elden St, Herndon, VA 201704834
Phone: 7036892020
Glaucoma Consultants Of Washington, Inc
212 Linden Dr, Winchester, VA 226012893
Phone: 7036892020
Secondary Practice Locations
142 Linden Dr Ste 107
Winchester, VA 226016901
Phone: 7036892020
131 Elden St Ste 201
Herndon, VA 201704876
Phone: 7036892020
6101 Redwood Square Ctr Ste 214
Centreville, VA 201214269
Phone: 7036892020
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.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 171 ELDEN ST STE 100, HERNDON, VA 201704834 (Tel: 7036892020)
NPI status registered as active in NPPES database
Registered at 171 ELDEN ST, STE 100, HERNDON, VA 201704834 (Tel: 7036892020)
Registered at PO BOX 465, HERNDON, VA 201720465 (Tel: 7036892020)
Recorded as SAMEER AHMAD, M.D.
Ophthalmology (license number reported to NPPES: MD D53502)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Herndon
Healthcare providers in HerndonMailing Address
Po Box 465
Herndon, VA 201720465
Phone: 7036892020