Dr. Loren Chen , MD
Internal Medicine • Mc Lean, VA
1760 Old Meadow Rd Ste 305
Mc Lean, VA 221024330
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 June 17, 2009; this date does not establish years in practice.
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Published CMS data list 489 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: 199 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 108 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 44 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 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 586 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:
- Atorvastatin Calcium — 71 prescription fills, including refills.
- Amlodipine Besylate — 46 prescription fills, including refills.
- Rosuvastatin Calcium — 45 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 26 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Mc Lean, VA (2024, 16 clinicians with data). Median for this group: 626. Middle half: 274 to 1,119.
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: 748. Middle half: 335 to 1,431.
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 490 in 2020 to 489 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1760 Old Meadow Rd Ste 305
Mc Lean, VA 221024330
CMS Doctors and Clinicians lists 1 group name: Virginia Hospital Center Physician Group Llc. 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
2006
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
126 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 $54,799 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 $43,387 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
1,462 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
$24,401 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: $338.82 across 13 records.
By nature of payment
- Food and Beverage: $338.82 across 13 records.
Reporting-company totals (3 largest of 8)
- Sumitomo Pharma America, Inc.: $86.79 across 3 records.
- Boston Scientific Corporation: $65.64 across 2 records.
- Pfizer Inc.: $60.69 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
20 years (graduated 2006)
CMS Doctors and Clinicians data list 2006 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
2009
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
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 Mc Lean and Virginia
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Mc Lean, VA (2024, 16 clinicians with data). Median for this group: 626. Middle half: 274 to 1,119.
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: 748. Middle half: 335 to 1,431.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Mc Lean, VA (2024, 16 clinicians with data). Median for this group: $66,739. Middle half: $38,456 to $97,276.
A lower Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: $73,309. Middle half: $32,676 to $134,131.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Mc Lean, VA (2024, 16 clinicians with data). Median for this group: $51,698. Middle half: $28,345 to $76,999.
A lower Medicare payment amount than 60% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: $56,392. Middle half: $24,672 to $102,762.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Mc Lean, VA (2024, 20 clinicians with data). Median for this group: 1,075. Middle half: 167 to 1,406.
Close to the middle for clinicians listed under Internal Medicine in Virginia (2024, 2,088 clinicians with data). Median for this group: 684. Middle half: 116 to 4,028.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Internal Medicine in Mc Lean, VA (2024, 20 clinicians with data). Median for this group: $47,832. Middle half: $10,599 to $102,794.
Close to the middle for clinicians listed under Internal Medicine in Virginia (2024, 2,088 clinicians with data). Median for this group: $49,170. Middle half: $2,703 to $324,085.
35 active clinicians are listed under Internal Medicine with a practice address in Mc Lean, VA (3,603 in Virginia).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mc Lean
28.6% of these 35 clinicians have the CMS telehealth indicator.
60% of these 35 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
Medicare Part B services varied from year to year: 490 in 2020 and 489 in 2024.
- 2020: 490
- 2021: 527
- 2022: 718
- 2023: 391
- 2024: 489
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Medicare-allowed amount
Medicare-allowed amount increased 15% from $47,473 in 2020 to $54,799 in 2024.
- 2020: $47,473
- 2021: $66,830
- 2022: $94,357
- 2023: $49,190
- 2024: $54,799
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Paid by Medicare
Paid by Medicare increased 23% from $35,283 in 2020 to $43,387 in 2024.
- 2020: $35,283
- 2021: $54,490
- 2022: $73,428
- 2023: $35,902
- 2024: $43,387
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 60% from 1,454 in 2020 to 586 in 2024.
- 2020: 1,454
- 2021: 1,677
- 2022: 2,531
- 2023: 1,507
- 2024: 586
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30-day fills
30-day fills decreased 53% from 3,097 in 2020 to 1,462 in 2024.
- 2020: 3,097
- 2021: 3,608
- 2022: 5,704
- 2023: 3,657
- 2024: 1,462
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Part D drug cost
Part D drug cost decreased 86% from $174,308 in 2020 to $24,401 in 2024.
- 2020: $174,308
- 2021: $191,378
- 2022: $298,883
- 2023: $147,236
- 2024: $24,401
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $32.42 in 2022 to $338.82 in 2025.
- 2022: $32.42
- 2023: $180.82
- 2024: $191.93
- 2025: $338.82
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): 13 records totaling $338.82.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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AMS 700 | General | $42.32 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
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GEMTESA | General | $29.13 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
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GEMTESA | General | $29.03 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
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GEMTESA | General | $28.63 |
| Biogen, Inc. |
Food and Beverage
In-kind items and services
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SPINRAZA | General | $27.90 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Wegovy | General | $26.57 |
| Caris MPI, Inc. |
Food and Beverage
In-kind items and services
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MI CANCER SEEK | General | $25.05 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $24.29 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $23.66 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $23.34 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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AMS 700 | General | $23.32 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $21.89 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $13.69 |
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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199 | 95 | $283.89 | $141.47 |
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36415
Insertion of needle into vein for collection of blood sample
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108 | 76 | $8.66 | $8.38 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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44 | 44 | $291.40 | $143.21 |
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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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37 | 37 | $396.79 | $184.46 |
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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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23 | 21 | $201.21 | $100.71 |
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90677
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
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19 | 19 | $397.19 | $291.11 |
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G0009
Administration of pneumococcal vaccine
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19 | 19 | $34.00 | $33.32 |
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G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
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15 | 15 | $358.00 | $181.28 |
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G0008
Administration of influenza virus vaccine
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13 | 13 | $34.00 | $33.32 |
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90662
Influenza vaccine split virus, preservative free
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12 | 12 | $105.83 | $81.82 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 71 | 6,110 | $866.12 | 34 |
| Amlodipine Besylate | Amlodipine Besylate | 46 | 4,080 | $155.54 | 16 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 45 | 4,038 | $817.15 | 20 |
| Losartan Potassium | Losartan Potassium | 30 | 2,660 | $313.44 | 13 |
| Fluticasone Propionate | Fluticasone Propionate | 29 | 1,931 | $518.01 | 18 |
| Tamsulosin Hcl | Tamsulosin Hcl | 28 | 2,376 | $285.86 | 12 |
| Levothyroxine Sodium | Levothyroxine Sodium | 27 | 2,430 | $254.84 | 14 |
| Pantoprazole Sodium | Pantoprazole Sodium | 27 | 2,130 | $300.78 | 11 |
| Famotidine | Famotidine | 25 | 1,920 | $400.35 | 14 |
| Lisinopril | Lisinopril | 23 | 2,010 | $54.62 | — |
| Pravastatin Sodium | Pravastatin Sodium | 22 | 1,990 | $284.55 | — |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 18 | 353 | $72.93 | 11 |
| Trazodone Hcl | Trazodone Hcl | 18 | 1,320 | $103.81 | — |
| Testosterone | Testosterone | 18 | 750 | $1,221.62 | — |
| Ezetimibe | Ezetimibe | 17 | 1,530 | $354.57 | — |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 16 | 1,260 | $783.92 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 15 | 958 | $100.59 | — |
| Metformin Hcl Er | Metformin Hcl | 14 | 1,170 | $156.34 | — |
| Eliquis | Apixaban | 14 | 840 | $16,385.35 | — |
| Metoprolol Succinate | Metoprolol Succinate | 13 | 1,110 | $117.44 | — |
| Oxycodone Hcl | Oxycodone Hcl | 13 | 185 | $72.20 | — |
| Zolpidem Tartrate | Zolpidem Tartrate | 12 | 502 | $35.31 | — |
| Pregabalin | Pregabalin | 12 | 660 | $501.40 | — |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 11 | 261 | $50.24 | — |
| Clonazepam | Clonazepam | 11 | 306 | $76.61 | — |
(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: 2023-06-23NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20170925001593
DC
6608921598
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
Virginia Hospital Center Physician Group Llc
1760 Old Meadow Rd, Mc Lean, VA 221024330
Phone: 7037177278
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified)
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 305, MC LEAN, VA 221024330 (Tel: 7037177278)
Registered at 1760 OLD MEADOW RD STE 305, MC LEAN, VA 221024330 (Tel: 7037177278)
Internal Medicine (license number reported to NPPES: VA 0101277526)
Internal Medicine (license number reported to NPPES: PA MD437313)
NPI status registered as active in NPPES database
Registered at 2150 PENNSYLVANIA AVE NW STE 5-416, WASHINGTON, DC 200373201 (Tel: (202) 741-2233)
Registered at 2150 PENNSYLVANIA AVE NW STE 5-416, WASHINGTON, DC 200373201 (Tel: (202) 741-2233)
Recorded as LOREN CHEN, M.D.
Internal Medicine (license number reported to NPPES: DC MD045574)
NPI status registered as active in NPPES database
Registered at 834 CHESTNUT ST, APT 910, PHILADELPHIA, PA 191301708 (Tel: 2157798104)
Registered at 814 NORTH NEWKIRK STREET, PHILADELPHIA, PA 19130
Recorded as LOREN CHEN, M.D.
Internal Medicine (license number reported to NPPES: PA MD437313)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Mc Lean
- Kimberly Houde
- Dr. Suzanne Wittig, MD
- Dr. Vibha Thakral-Saalinger, MD
- Dr. Kawan Barawy, MD
- Dr. Iva Ferreira, MD
- Dr. Jason Gendell, MD
Mailing Address
1760 Old Meadow Rd Ste 305
Mc Lean, VA 221024330
Phone: 7037177278