Medicare Enrolled
Dr. Nazanin Firooz, M.D.
Rheumatology · Woodland Hills, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Consulting-driven
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Firooz from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Firooz
Dr. Nazanin Firooz is a rheumatology specialist in Woodland Hills, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Firooz performed 33,722 Medicare services across 2,129 unique beneficiaries.
Between the years covered by Open Payments, Dr. Firooz received a total of $43,639 from 45 pharmaceutical and/or device companies across 1027 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in rheumatology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Firooz is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 18 years in practice
▲ Top 14% volume in CA
$43,639 industry payments
Medicare Practice Summary
Medicare Utilization ↗33,722
Medicare services
Top 14% in CA for rheumatology
2,129
Unique beneficiaries
$17
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,873 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Romosozumab injection (Evenity) for osteoporosis | 13,650 | $8 | $14 |
| Denosumab injection (Prolia/Xgeva) | 5,880 | $19 | $45 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
4,587 | $0 | $4 |
| Infliximab infusion (Remicade) An injection of infliximab, excluding biosimilar versions, administered in a 10 mg dose. |
3,958 | $26 | $80 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
1,013 | $101 | $280 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
524 | $14 | $47 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
416 | $1 | $2 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
393 | $30 | $100 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
329 | $63 | $190 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
322 | $58 | $172 |
| Methylprednisolone injection, up to 40 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, administered in a dose of up to 40 mg. |
316 | $3 | $6 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
265 | $25 | $120 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
260 | $120 | $343 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
230 | $12 | $50 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
193 | $1 | $5 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
189 | $68 | $202 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
160 | $52 | $113 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
123 | $133 | $370 |
| Autoimmune disorder antibody test A laboratory test that measures antibodies in the blood to help assess for autoimmune disorders. |
98 | $18 | $44 |
| Chronic care management services Comprehensive assessment and care planning for patients requiring ongoing chronic care management. |
94 | $52 | $102 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
77 | $8 | $12 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
66 | $1 | $30 |
| Monthly chronic pain management bundle A monthly service for chronic pain management that includes diagnosis, assessment, monitoring, and the development or revision of a person-centered care plan. |
65 | $67 | $160 |
| Anti-nausea injection (ondansetron/Zofran) | 62 | $0 | $1 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
60 | $8 | $25 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
55 | $134 | $400 |
| Injection, adrenalin, epinephrine, 0.1 mg | 55 | $1 | $2 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
53 | $1 | $2 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
45 | $48 | $126 |
| Immunoassay substance analysis, multiple step method A laboratory test that uses an immunoassay technique to analyze a substance. The process involves multiple steps to detect or measure the target material. |
36 | $11 | $24 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
22 | $17 | $50 |
| Joint fluid aspiration or injection, small joint Removal of fluid from a small joint or injection of medication into a small joint. |
18 | $44 | $117 |
| Rheumatoid arthritis antibody test A blood test to measure antibodies used in assessing rheumatoid arthritis. |
18 | $13 | $32 |
| Rheumatoid factor level | 18 | $6 | $14 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
17 | $53 | $144 |
| Tendon or ligament injection A procedure involving the injection of medication into a tendon or ligament. |
15 | $44 | $85 |
| DNA antibody test (native or double-stranded) A blood test that measures the level of antibodies targeting native or double-stranded DNA. This test is used to detect the presence of these specific antibodies in the body. |
14 | $13 | $35 |
| Measurement of dna antibody, single stranded | 14 | $12 | $30 |
| Autoimmune disorder screening test A laboratory test used to screen for the presence of autoimmune disorders. |
12 | $12 | $30 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
15.9% high complexity
64.4% medium
19.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$43,639
Total received (2018-2024)
Avg $6,234/year across 7 years
Top 12% in CA for rheumatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
45
Companies
1,027
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$23,939 (54.9%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$19,535 (44.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$166 (0.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,640
2023
$3,829
2022
$3,434
2021
$2,535
2020
$4,090
2019
$21,293
2018
$4,818
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$845
Amgen Inc.
$790
Novartis Pharmaceuticals Corporation
$311
GlaxoSmithKline, LLC.
$227
UCB, Inc.
$190
Alexion Pharmaceuticals, Inc.
$166
Mallinckrodt Hospital Products Inc.
$166
Radius Health, Inc.
$116
PFIZER INC.
$116
Kiniksa Pharmaceuticals International, plc
$108
Lilly USA, LLC
$102
AstraZeneca Pharmaceuticals LP
$66
Fresenius Kabi USA, LLC
$62
Janssen Biotech, Inc.
$62
Fidia Pharma USA Inc.
$51
Boehringer Ingelheim Pharmaceuticals, Inc.
$50
E.R. Squibb & Sons, L.L.C.
$46
Aurinia Pharma U.S., Inc.
$45
SCILEX PHARMACEUTICALS INC.
$36
GENZYME CORPORATION
$35
SOBI, INC
$19
Zimmer Biomet Holdings, Inc.
$17
Octapharma USA, Inc.
$15
Top 3 companies account for 53.5% of 2024 payments
All-time payments by company (2018-2024) ›
UCB, Inc.
$13,832
Avion Pharmaceuticals
$5,226
Amgen Inc.
$3,944
Fresenius Kabi USA, LLC
$2,742
ABBVIE INC.
$2,712
Cardinal Health 108, LLC
$2,441
Novartis Pharmaceuticals Corporation
$2,376
Janssen Biotech, Inc.
$2,059
GlaxoSmithKline, LLC.
$1,486
Lilly USA, LLC
$854
AbbVie Inc.
$807
PFIZER INC.
$538
Horizon Therapeutics plc
$502
GENZYME CORPORATION
$494
E.R. Squibb & Sons, L.L.C.
$480
AstraZeneca Pharmaceuticals LP
$384
Mallinckrodt Enterprises LLC
$281
Radius Health, Inc.
$280
Alexion Pharmaceuticals, Inc.
$270
Mallinckrodt Hospital Products Inc.
$263
Celgene Corporation
$231
Aurinia Pharma U.S., Inc.
$148
Horizon Pharma plc
$137
AbbVie, Inc.
$135
Boehringer Ingelheim Pharmaceuticals, Inc.
$117
Kiniksa Pharmaceuticals International, plc
$108
Octapharma USA, Inc.
$87
SOBI, INC
$79
Fidia Pharma USA Inc.
$75
MEDEXUS PHARMA, INC.
$73
Sobi, Inc
$58
Genentech USA, Inc.
$56
DePuy Synthes Sales Inc.
$50
MEDAC PHARMA, INC.
$50
Merck Sharp & Dohme Corporation
$38
SCILEX PHARMACEUTICALS INC.
$36
SANOFI-AVENTIS U.S. LLC
$28
Vertiflex, Inc.
$27
Organon LLC
$26
Ultragenyx Pharmaceutical Inc.
$21
Antares Pharma, Inc.
$21
Mallinckrodt LLC
$20
VYERA PHARMACEUTICALS, LLC
$18
Zimmer Biomet Holdings, Inc.
$17
Bioventus LLC
$11
Top 3 companies account for 52.7% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AMJEVITA · AVSOLA · Actemra · Arcalyst · BENLYSTA · Balcoltra · Bimzelx · COSENTYX · Cimzia · Daraprim · EVENITY · EVUSHELD · Enbrel · FORTEO · GELSYN 3 · Gel-One Cross-linked Hyaluronate · Gloperba · HUMIRA · HYMOVIS · Humira · IDACIO · ILARIS · INFLECTRA · KEVZARA · KINERET · KRYSTEXXA · Kineret · LUPKYNIS · LYRICA · MONOVISC · MOUNJARO · OCTAGAM IMMUNE GLOBULIN (HUMAN) · OFEV · ORENCIA · ORTHOVISC · Otezla · Otrexup · Prolia · RAYOS · REMICADE · RENFLEXIS · RINVOQ · Rasuvo · Rinvoq · Rituxan · SAPHNELO · SIMPONI ARIA · SKYRIZI · STELARA · STRENSIQ · SYNVISC-ONE · Superion ISS · TALTZ · TAVNEOS · TREMFYA · Tymlos · XELJANZ · XLSD · ZEPBOUND · ZTLido
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (55%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
Geographic Context
Rheumatologists within 10 mi
158
Per 100K population
1.6
County median income
$87,760
Nearest hospital
KAISER FOUNDATION HOSPITAL - WOODLAND HILLS
2.0 mi
2.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Firooz is a mixed practice specialist, with above-average Medicare volume (top 14% in CA), with consulting-driven industry engagement in the top 12% of CA peers, with 18 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Firooz experienced with romosozumab injection (evenity) for osteoporosis?
Based on Medicare claims data, Dr. Firooz performed 13,650 romosozumab injection (evenity) for osteoporosis services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Firooz receive payments from pharmaceutical companies?
Yes. Dr. Firooz received a total of $43,639 from 45 companies across 1,027 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Firooz's costs compare to other rheumatologists in Woodland Hills?
Dr. Firooz's average Medicare payment per service is $17. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Firooz) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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