DR. ARA THOMASSIAN M.D.
NPI 1609118777
Internal Medicine in Valley Village, CA

Q: What is Ara Thomassian's NPI number?

The NPI number for Ara Thomassian is 1609118777. It was assigned to this individual provider in the NPPES registry on March 26, 2013.

Q: What is Ara Thomassian's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Ara Thomassian was last updated on September 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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 March 26, 2013PECOS EnrolledAccepts Medicare Assignment

85.71/100

CMS Quality Rating

12660 RIVERSIDE DR, SUITE 215, VALLEY VILLAGE, CA 91607(818) 487-0040(818) 487-0050 Get Directions Write a Review

NPPES record last updated: September 28, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 28, 2016, Jul 1, 2016 (2 updates tracked since 2016).

On this page

About Dr. Ara Thomassian M.d. NPPES

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

DR. ARA THOMASSIAN M.D. (NPI 1609118777) is an individual internal medicine provider in Valley Village, California, licensed in California (A132991) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS and is a graduate of Meharry Medical College School Of Dentistry (2013).

NPPES Registry Identity

NPI1609118777

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. ARA THOMASSIANCredential: M.D.

Location Address12660 RIVERSIDE DR, SUITE 215Valley Village, CA 91607-3429

Mailing Address12660 Riverside Dr, Suite 215Valley Village, CA 91607-3429 · (818) 487-0040 · Fax (818) 487-0050

Phone(818) 487-0040

Fax(818) 487-0050

Sole ProprietorYes

Medical School CMSMeharry Medical College School Of DentistryGraduated 2013

Enumeration DateMarch 26, 2013

Last NPPES UpdateSeptember 28, 20162 updates tracked since enumeration

✔ NPI 1609118777 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A132991

Definition

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.

12660 RIVERSIDE DR, Valley Village, CA 91607

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ara Thomassian M.d. 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 ID8224321674

PECOS Enrollment IDI20160722002284

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.

Medicare Billing Reassignment

Medicare enrollment records show Ara Thomassian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cedars-Sinai Medical Care Foundation

5.8 mi

Anesthesiology

8700 BEVERLY BLVD STE SB-290
Los Angeles, CA 90048

Reassigned Medicare billing, California enrollment
2,118 clinicians in this Medicare group

NPI 1043826720 (310) 423-1447

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

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.

769 services315 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

656 services305 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.

631 services302 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.

628 services302 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

572 services291 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.

399 services226 patients

Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes G0446

This is a yearly, personal consultation focused on behaviors affecting heart health. It lasts 15 minutes and may cover topics like diet, exercise, and stress management. It's about learning healthy habits to protect your heart.

254 services254 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

184 services181 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.

156 services128 patients

Cyanocobalamin (vitamin b-12) level 82607

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

156 services121 patients

Psa (prostate specific antigen) measurement, total 84153

PSA measurement is a simple blood test that checks for a specific protein produced by your body. High levels could indicate a health issue that needs further investigation. It's often used to monitor general wellness and is part of routine health screening.

127 services101 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.

103 services102 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

100 services99 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

69 services47 patients

Iron level 83540

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

68 services47 patients

Iron binding capacity 83550

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

68 services47 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.

51 services40 patients

Urine microalbumin (protein) level 82043

The urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.

47 services44 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

47 services43 patients

Creatinine level to test for kidney function or muscle injury 82570

A creatinine level test measures the amount of creatinine in your blood. This substance is a waste product from normal muscle use. Higher levels can indicate possible kidney dysfunction or muscle injury. This test helps monitor kidney health.

45 services42 patients

Uric acid level, blood 84550

A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.

38 services23 patients

Parathormone (parathyroid hormone) level 83970

The Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.

26 services19 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.

25 services23 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

24 services22 patients

Coagulation assessment blood test, plasma or whole blood 85730

A coagulation assessment blood test evaluates how well your blood clots, helping identify potential bleeding or clotting disorders. This test uses a sample of your plasma or whole blood. It's a standard procedure to ensure your body's clotting process is functioning properly.

23 services21 patients

Creatine kinase (cardiac enzyme) level, total 82550

The total Creatine Kinase (CK) level test is a blood test that helps assess the health of your heart. It measures an enzyme called CK that's released into the bloodstream when heart or other muscle tissue is damaged. High levels may indicate a heart attack or muscle disorder.

16 services14 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

15 services15 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91607 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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.

85.71/100

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

Scored as part of a group practice

Quality

85.67

Promoting Interoperability

100

Improvement Activities

Cost

61.47

Referred Medical Equipment & Supplies CMS DME claims 7

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

14 suppliers61 claims127 services$6.00 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers47 claims47 services$0.99 avg. paid by Medicare

Skin barrier, wipes or swabs, each A5120

DME-Orthotic Devices · category DF010N

1 supplier11 claims1,100 services$0.22 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

5 suppliers12 claims12 services$44.19 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers17 claims17 services$48.48 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

1 supplier11 claims11 services$69.60 avg. paid by Medicare

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

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.

YAROSLAV A. GOFNUNG, M.D., INC.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

12660 RIVERSIDE DR, SUITE 225
NORTH HOLLYWOOD, CA 91607

Los Angeles County (818) 487-0040

R ROLAND LOPEZ, M.D., INC.

Non-Pharmacy Dispensing Site

12660 RIVERSIDE DR, SUITE 201
NORTH HOLLYWOOD, CA 91607

Los Angeles County (714) 963-9595

JOSEPH R SHAPIRO MD, INC.

Allergy & Immunology

12660 RIVERSIDE DR, SUITE 325
STUDIO CITY, CA 91607

Los Angeles County (818) 769-5998

THESEA CHINN MD MPH INC

Internal Medicine

12660 RIVERSIDE DR, STE 110
NORTH HOLLYWOOD, CA 91607

Los Angeles County (818) 766-2110

NOHA R BARSOUM M.D.

Internal Medicine

12660 RIVERSIDE DR, SUITE 225
NORTH HOLLYWOOD, CA 91607

Los Angeles County (818) 487-0040

JOYCE LEONG NP

Nurse Practitioner (Psychiatric/Mental Health)

12660 RIVERSIDE DR
VALLEY VILLAGE, CA 91607

Los Angeles County (424) 330-0077

ORTHOPEDIC REHABILITATION ASSOCIATES OF SAN FERNANDO VALLEY

Legal Medicine

12660 RIVERSIDE DR, SUITE 201
NORTH HOLLYWOOD, CA 91607

Los Angeles County (818) 769-2101

DR. KAREN I VIRLEY M.D.

Internal Medicine

12660 RIVERSIDE DR, STE 310
N HOLLYWOOD, CA 91607

Los Angeles County (818) 755-0391

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 Ara Thomassian's NPI number?

The NPI number for Ara Thomassian is 1609118777. It was assigned to this individual provider in the NPPES registry on March 26, 2013.

Where is Ara Thomassian located?

Ara Thomassian practices at 12660 Riverside Dr Suite 215, Valley Village, CA 91607. The listed phone number is (818) 487-0040.

What is Ara Thomassian's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ara Thomassian enrolled in Medicare?

Yes. Ara Thomassian 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.

Which organization bills Medicare for Ara Thomassian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ara Thomassian reassigns Medicare benefits to Cedars-Sinai Medical Care Foundation (Los Angeles, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ara Thomassian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ara Thomassian was last updated on September 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.