Sandra Yoo , PA-C
Physician Assistant • Mc Lean, VA
1760 Old Meadow Rd Ste 500
Mc Lean, VA 221024306
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on June 8, 2021; this date does not establish years in practice.
-
Published CMS data list 32 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.
-
Published Part B service records, 2024:
- 99203 — New patient outpatient office visit: 16 service units.
- 99204 — New patient outpatient office visit: 16 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 the full table · Guide: How to read Medicare Part B data
-
Published CMS data list 29 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.
-
Published Part D records, 2024:
- Diclofenac Sodium — 29 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 the full table · Guide: How to read Medicare Part D prescriber data
-
Fewer Medicare Part B services than 90% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 17 clinicians with data). Median for this group: 251. Middle half: 110 to 811.
Fewer Medicare Part B services than 90% of clinicians listed under Physician Assistant in Virginia (2024, 2,247 clinicians with data). Median for this group: 288. Middle half: 107 to 693.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 1,037 in 2022 to 32 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022–2024.
Practice Location & Contact Primary Location
1760 Old Meadow Rd Ste 500
Mc Lean, VA 221024306
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: Inova Health Care Services. 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
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
40 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 $4,190 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 $3,202 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
29 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
$426 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 2022
All general payments: $1,380.56 across 54 records.
By nature of payment
- Food and Beverage: $1,380.56 across 54 records.
Reporting-company totals (3 largest of 13)
- ABBVIE INC.: $445.03 across 13 records.
- Janssen Pharmaceuticals, Inc: $269.21 across 2 records.
- Salix Pharmaceuticals, a division of Bausch Health US, LLC: $224.60 across 13 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 2022 (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
2021
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)
Sandra Yoo 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 Sandra Yoo 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 Mc Lean and Virginia
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 17 clinicians with data). Median for this group: 251. Middle half: 110 to 811.
Fewer Medicare Part B services than 90% of clinicians listed under Physician Assistant in Virginia (2024, 2,247 clinicians with data). Median for this group: 288. Middle half: 107 to 693.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 17 clinicians with data). Median for this group: $23,272. Middle half: $12,562 to $69,205.
A lower Medicare-allowed amount than 85% of clinicians listed under Physician Assistant in Virginia (2024, 2,247 clinicians with data). Median for this group: $23,153. Middle half: $9,003 to $44,800.
Paid by Medicare
A lower Medicare payment amount than 85% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 17 clinicians with data). Median for this group: $16,297. Middle half: $9,213 to $51,949.
A lower Medicare payment amount than 85% of clinicians listed under Physician Assistant in Virginia (2024, 2,247 clinicians with data). Median for this group: $17,218. Middle half: $6,803 to $32,639.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 18 clinicians with data). Median for this group: 114. Middle half: 37 to 455.
Fewer Part D prescriptions than 85% of clinicians listed under Physician Assistant in Virginia (2024, 2,256 clinicians with data). Median for this group: 247. Middle half: 75 to 708.
Part D drug cost
A lower Part D drug cost than 80% of clinicians listed under Physician Assistant in Mc Lean, VA (2024, 18 clinicians with data). Median for this group: $3,399. Middle half: $766 to $10,530.
A lower Part D drug cost than 80% of clinicians listed under Physician Assistant in Virginia (2024, 2,256 clinicians with data). Median for this group: $3,441. Middle half: $640 to $57,211.
32 active clinicians are listed under Physician Assistant with a practice address in Mc Lean, VA (4,411 in Virginia).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mc Lean
15.6% of these 32 clinicians have the CMS telehealth indicator.
59.4% of these 32 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.
-
Medicare Part B services
Medicare Part B services decreased 97% from 1,037 in 2022 to 32 in 2024.
- 2022: 1,037
- 2023: 115
- 2024: 32
-
Medicare-allowed amount
Medicare-allowed amount decreased 96% from $95,985 in 2022 to $4,190 in 2024.
- 2022: $95,985
- 2023: $10,330
- 2024: $4,190
-
Paid by Medicare
Paid by Medicare decreased 96% from $71,769 in 2022 to $3,202 in 2024.
- 2022: $71,769
- 2023: $7,728
- 2024: $3,202
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 51% from 59 in 2021 to 29 in 2024.
- 2021: 59
- 2022: 1,084
- 2023: 287
- 2024: 29
-
30-day fills
30-day fills decreased 76% from 119 in 2021 to 29 in 2024.
- 2021: 119
- 2022: 2,237
- 2023: 746
- 2024: 29
-
Part D drug cost
Part D drug cost went from $945 in 2021 to $426 in 2024.
- 2021: $945
- 2022: $108,700
- 2023: $27,101
- 2024: $426
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $734.93 in 2021 to $1,380.56 in 2022.
- 2021: $734.93
- 2022: $1,380.56
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), 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 2022 (payments made January 1 – December 31, 2022): 54 records totaling $1,380.56.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
STELARA | General | $144.87 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
STELARA | General | $124.34 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
MAVYRET | General | $122.03 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
SKYRIZI | General | $119.60 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $25.83 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $25.83 |
| QOL Medical, LLC |
Food and Beverage
Cash or cash equivalent
|
SUCRAID | General | $24.31 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
MAVYRET | General | $24.02 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.92 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.73 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.35 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.33 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $23.30 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
SKYRIZI | General | $22.94 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $22.17 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
MAVYRET | General | $22.15 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VIBERZI | General | $21.63 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VIBERZI | General | $21.63 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $20.48 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $19.98 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
|
INJECTAFER | General | $19.64 |
| Alnylam Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
|
GIVLAARI | General | $19.50 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $19.25 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
|
XIFAXAN | General | $18.58 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
|
INJECTAFER | General | $18.33 |
(top 25 shown)
Source: CMS Open Payments, program year 2022, 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 2021–2023 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, 2022–2024; 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 |
|---|---|---|---|---|
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
16 | 16 | $293.00 | $105.06 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
16 | 16 | $443.00 | $156.83 |
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 |
|---|---|---|---|---|---|
| Diclofenac Sodium | Diclofenac Sodium | 29 | 660 | $426.12 | 22 |
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: 2023-04-07NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20221217000233
DC
2163818089
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
Inova Health Care Services
1005 N Glebe Rd, Arlington, VA 222015758
Inova Health Care Services
3299 Woodburn Rd, Annandale, VA 220037326
Phone: 7032052626
Inova Health Care Services
3299 Woodburn Rd, Annandale, VA 220037326
Phone: 7032052626
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physical Therapist
Physical Therapist, Doctor of Physical Therapy
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1760 OLD MEADOW RD STE 500, MC LEAN, VA 221024306
Physician Assistant (license number reported to NPPES: VA 0110007849)
Registered at 1760 OLD MEADOW RD STE 500, MC LEAN, VA 221024306 (Tel: 5715992423)
NPI status registered as active in NPPES database
Registered at 1309 SAVANNAH RD, LEWES, DE 199581514 (Tel: 3026456698)
Registered at 144 FAIRHILL DR, WILMINGTON, DE 198084309 (Tel: 3025409249)
Recorded as SANDRA YOO, PA-C
Physician Assistant (license number reported to NPPES: DE C5-0011451)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Mc Lean
- Melinda Ricker, PA-C
- Maureen Miranda, PA-C, MSPAS, MPH
- Joel Sajan
- Kailin Clanton, PA
- Dr. Sung Shin, PA-C, DHSC
- Gabrielle Torres, PA-C
Mailing Address
1760 Old Meadow Rd Ste 500
Mc Lean, VA 221024306