DR. MARIA CHOU MD
NPI 1689738452
Internal Medicine - Rheumatology in Reston, VA

Q: What is Maria Chou's NPI number?

The NPI number for Maria Chou is 1689738452. It was assigned to this individual provider in the NPPES registry on December 19, 2006.

Q: What is Maria Chou's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Maria Chou was last updated on March 23, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 19, 2006PECOS EnrolledAccepts Medicare Assignment

88.99/100

CMS Quality Rating

1860 TOWN CENTER DR, #130, RESTON, VA 20190(703) 709-9174(703) 709-9183 Get Directions Write a Review

NPPES record last updated: March 23, 2017. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Maria Chou Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARIA CHOU MD (NPI 1689738452) is an individual rheumatology provider in Reston, Virginia, licensed in Virginia (0101233943) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of New York Medical College (1999).

NPPES Registry Identity

NPI1689738452

Entity TypeIndividualFemale

Primary Taxonomy207RR0500X

Provider Legal NameDR. MARIA CHOUCredential: MD

Location Address1860 TOWN CENTER DR, #130Reston, VA 20190-5896

Mailing Address7300 Hanover Dr, Ste 201Greenbelt, MD 20770-2247 · (703) 709-9174 · Fax (703) 709-9183

Phone(703) 709-9174

Fax(703) 709-9183

Sole ProprietorNo

Medical School CMSNew York Medical CollegeGraduated 1999

Enumeration DateDecember 19, 2006

Last NPPES UpdateMarch 23, 2017

✔ NPI 1689738452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in VA · 0101233943

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

1860 TOWN CENTER DR, Reston, VA 20190

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Other Identifiers 1

Medicare UPINI17179VA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Maria Chou Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4688643976

PECOS Enrollment IDI20041004000117

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 28

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

3,000 services32 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

606 services377 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

412 services213 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

227 services146 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

221 services134 patients

Red blood cell sedimentation rate, to detect inflammation, non-automated 85651

The Red Blood Cell Sedimentation Rate test measures how quickly red blood cells settle at the bottom of a test tube. If they settle faster than normal, it may indicate inflammation in the body. This test is non-automated, meaning it's manually performed by a lab technician.

216 services140 patients

Measurement of antibody for assessment of autoimmune disorder, any method 86235

This procedure measures the level of specific antibodies in your body to assess if you have an autoimmune disorder. Antibodies are proteins your immune system produces. In autoimmune disorders, these antibodies mistakenly attack your own cells. This test helps identify such conditions.

162 services15 patients

Complete ultrasound scan of joint 76881

A complete ultrasound scan of a joint is a non-invasive procedure using sound waves to create images of your joint. It helps identify problems like inflammation, injury, or disease. It's painless, safe, and doesn't involve radiation.

139 services103 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

125 services85 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

111 services111 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

93 services83 patients

Hyaluronan or derivative, gel-one, for intra-articular injection, per dose J7326

Hyaluronan or Gel-One is a substance injected directly into your joint space. It's aimed to supplement your body's natural joint fluid, helping to lubricate and cushion the joint, reducing pain and improving mobility. It's often used for arthritis relief.

87 services39 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

82 services54 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

75 services71 patients

Measurement c-reactive protein for detection of infection or inflammation 86140

C-reactive protein (CRP) test is a blood test that checks for signs of inflammation or infection in the body. High levels of CRP often suggest that there's inflammation or a bacterial infection. This test helps in monitoring and managing conditions like arthritis and heart disease.

59 services56 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

55 services55 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

53 services39 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

52 services45 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

44 services44 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

43 services32 patients

Measurement of complement (immune system proteins), antigen, 86160

The measurement of complement (immune system proteins) and antigen is a blood test. It helps to assess how your immune system is functioning. Complement proteins play a role in your body's immune response, and antigens trigger this response. This test helps in diagnosing and monitoring certain diseases.

38 services18 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

27 services22 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

26 services23 patients

Testing for presence of drug, read by direct observation 80305

Testing for the presence of drugs involves collecting a sample, usually urine, which is then analyzed for specific substances. The process is monitored directly to ensure accuracy and integrity. This test helps to confirm if drugs are present in your system.

25 services18 patients

Aspiration and/or injection of fluid from small joint using ultrasound guidance 20604

This procedure involves using ultrasound to accurately locate a small joint. A needle is then carefully inserted to remove fluid (aspiration) or inject medication. This can help diagnose or treat joint issues. It's generally safe and minimally invasive.

22 services18 patients

Measurement of dna antibody, single stranded 86226

The measurement of single-stranded DNA antibodies is a blood test. It is conducted to detect autoantibodies that might be present in your body, which can indicate certain autoimmune disorders. This test helps in diagnosing and monitoring these conditions.

17 services14 patients

Measurement of dna antibody, native or double stranded 86225

The measurement of DNA antibody, native or double stranded, is a blood test that helps detect autoimmune disorders, such as lupus. It identifies if your body is producing antibodies against its own DNA, which can indicate an overactive immune response.

16 services13 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20190 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.99/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

84.41

Promoting Interoperability

Improvement Activities

Cost

80.57

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hand finger orthosis, without joints, may include soft interface, straps, prefabricated, off-the-shelf L3924

DME-Orthotic Devices · category DF000N

1 supplier12 claims14 services$70.81 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RODOLFO H GONZALEZ MD. PC

Specialist

1860 TOWN CENTER DR, SUITE 350
RESTON, VA 20190

Fairfax County (703) 435-8256

GABRIELLE PHAM-CHE DPT

Physical Therapist (Orthopedic)

1860 TOWN CENTER DR
RESTON, VA 20190

Fairfax County (703) 483-4684

JANET AVERY MD PLC

Internal Medicine

1860 TOWN CENTER DR, SUITE 310
RESTON, VA 20190

Fairfax County (703) 481-5907

NATALIE COLLEEN BURNETT DRUMMOND DPT

Physical Therapist

1860 TOWN CENTER DR, SUITE 300
RESTON, VA 20190

Fairfax County (703) 483-4650

JASON MICHAEL OLIVER PTA

Physical Therapy Assistant

1860 TOWN CENTER DR, SUITE 300
RESTON, VA 20190

Fairfax County (703) 483-4684

LINDA JOHNSON RNFA

Registered Nurse (Registered Nurse First Assistant)

1860 TOWN CENTER DR, SUITE 300
RESTON, VA 20190

Fairfax County (703) 435-6604

JEFFREY HOWARD BERG M.D.

Orthopaedic Surgery (Sports Medicine)

1860 TOWN CENTER DR, SUITE 300
RESTON, VA 20190

Fairfax County (703) 435-6604

MAARIJ INC

Psychiatry & Neurology (Neurology)

1860 TOWN CENTER DR, SUITE 320
RESTON, VA 20190

Fairfax County (703) 348-7207

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Chou's NPI number?

The NPI number for Maria Chou is 1689738452. It was assigned to this individual provider in the NPPES registry on December 19, 2006.

Where is Maria Chou located?

Maria Chou practices at 1860 Town Center Dr #130, Reston, VA 20190. The listed phone number is (703) 709-9174.

What is Maria Chou's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Maria Chou enrolled in Medicare?

Yes. Maria Chou is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Maria Chou was last updated on March 23, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.