Medicare Enrolled
Dr. Charles Weidmann, M.D.
Optician · Van Nuys, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Weidmann 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. Weidmann
Dr. Charles Weidmann is an optician specialist in Van Nuys, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Weidmann performed 43,399 Medicare services across 6,865 unique beneficiaries.
Between the years covered by Open Payments, Dr. Weidmann received a total of $11,511 from 34 pharmaceutical and/or device companies across 483 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in optician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Weidmann 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.
✓ 20 years in practice
▲ Top 3% volume in CA
$11,511 industry payments
Medicare Practice Summary
Medicare Utilization ↗43,399
Medicare services
Top 3% in CA for optician
6,865
Unique beneficiaries
$20
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~2,170 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 |
|---|---|---|---|
| Tocilizumab injection (Actemra) | 8,431 | $5 | $9 |
| Abatacept infusion (Orencia) An injection of abatacept administered under the direct supervision of a physician. This code is used for Medicare when the drug is not self-administered. |
6,836 | $33 | $98 |
| Romosozumab injection (Evenity) for osteoporosis | 5,899 | $8 | $24 |
| Denosumab injection (Prolia/Xgeva) | 3,531 | $18 | $53 |
| Autoimmune disorder antibody test A laboratory test that measures antibodies in the blood to help assess for autoimmune disorders. |
1,496 | $18 | $76 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
1,319 | $8 | $15 |
| 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. |
1,314 | $106 | $375 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
1,133 | $1 | $10 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
932 | $10 | $105 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
932 | $8 | $45 |
| C-reactive protein test (inflammation marker) A blood test that measures the level of C-reactive protein to detect the presence of infection or inflammation in the body. |
931 | $5 | $42 |
| Erythrocyte sedimentation rate (ESR) test A blood test that measures how quickly red blood cells settle in a test tube to detect inflammation in the body. This specific method is performed manually rather than using an automated machine. |
928 | $4 | $20 |
| 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. |
499 | $1 | $45 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
470 | $35 | $150 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
470 | $121 | $525 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
443 | $29 | $99 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
418 | $7 | $20 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
417 | $5 | $20 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
362 | $40 | $115 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
361 | $26 | $195 |
| Complement and antigen measurement A laboratory test to measure levels of complement proteins and antigens in the blood. |
357 | $12 | $51 |
| Complement function test A blood test that measures the activity of complement proteins, which are part of the immune system. |
355 | $12 | $42 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
290 | $16 | $65 |
| Limited ultrasound of joint or extremity A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels. |
273 | $37 | $103 |
| Thyroxine (T4) level test A blood test that measures the total amount of thyroxine, a thyroid hormone, in your body. |
253 | $7 | $45 |
| Infliximab infusion (Remicade) An injection of infliximab, excluding biosimilar versions, administered in a 10 mg dose. |
253 | $19 | $71 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
248 | $68 | $185 |
| Ultrasound-guided large joint aspiration or injection This procedure uses ultrasound imaging to guide the removal of fluid from or the injection of medication into a large joint. |
241 | $89 | $190 |
| Trigger point injection, 3 or more muscles Injection of medication into three or more specific muscle trigger points to relieve pain. |
239 | $46 | $150 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
232 | $15 | $30 |
| Hemoglobin a1c level, by device for home use | 222 | $10 | $42 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
212 | $36 | $125 |
| 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. |
177 | $13 | $42 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
173 | $0 | $20 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
159 | $14 | $150 |
| Rheumatoid arthritis antibody test A blood test to measure antibodies used in assessing rheumatoid arthritis. |
152 | $13 | $39 |
| Rheumatoid factor level | 150 | $6 | $14 |
| 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. |
128 | $49 | $126 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
115 | $45 | $267 |
| Beta 2 glycoprotein 1 antibody (autoantibody) measurement | 96 | $25 | $45 |
| Cardiolipin antibody (tissue antibody) measurement | 96 | $25 | $45 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
91 | $13 | $60 |
| Autoimmune disorder antibody titer test A blood test that measures the level of specific antibodies to help assess autoimmune disorders. |
90 | $11 | $25 |
| 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. |
89 | $13 | $60 |
| Iron level test | 88 | $6 | $25 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
88 | $9 | $45 |
| Autoimmune disorder screening test A laboratory test used to screen for the presence of autoimmune disorders. |
87 | $12 | $25 |
| Immunoassay substance measurement A laboratory test that uses immunoassay techniques to measure the level of a specific substance in a sample. |
85 | $17 | $52 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
81 | $42 | $175 |
| Cardiac enzyme level (CK-MB) test A blood test that measures the total level of creatine kinase, specifically the cardiac enzyme fraction, to help evaluate heart muscle damage. |
76 | $6 | $40 |
| 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. |
70 | $75 | $151 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
61 | $1 | $40 |
| Manual urinalysis with microscopic examination A urine test performed manually without automated equipment. The sample is examined under a microscope to check for abnormalities. |
59 | $4 | $35 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
54 | $14 | $30 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
50 | $38 | $125 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
47 | $4 | $35 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
47 | $79 | $170 |
| Hip X-ray, 1 view An X-ray image of the hip joint taken from a single angle to visualize the bones and surrounding structures. |
45 | $30 | $125 |
| 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. |
43 | $155 | $418 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
42 | $9 | $35 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
41 | $10 | $35 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
40 | $32 | $125 |
| New patient office visit, complex (60-74 min) | 39 | $181 | $575 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
37 | $9 | $60 |
| Tuberculosis test, enumeration of t-cells A blood test that counts T-cells to help detect tuberculosis infection. |
33 | $98 | $205 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
31 | $13 | $70 |
| 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. |
29 | $60 | $250 |
| White blood cell antibody identification test A laboratory test used to identify specific antibodies present in the blood that target white blood cells. |
27 | $15 | $50 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
26 | $61 | $125 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
25 | $33 | $125 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
23 | $35 | $125 |
| Foot X-ray, 3+ views An X-ray imaging test of the foot that captures at least three different views to evaluate the bones and joints. |
23 | $29 | $125 |
| Antineutrophil cytoplasmic antibody titer | 23 | $12 | $20 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
20 | $43 | $125 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
20 | $52 | $420 |
| Amylase enzyme level test A blood test that measures the amount of amylase, an enzyme produced by the pancreas and salivary glands, to help evaluate pancreatic health. |
19 | $6 | $20 |
| Lipase level test A blood test that measures the amount of lipase, a fat-digesting enzyme, in your body. |
18 | $7 | $20 |
| Ultrasound-guided joint aspiration or injection Removal of fluid from or injection into a medium-sized joint using ultrasound guidance to ensure accurate placement. |
17 | $81 | $150 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
17 | $48 | $145 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
14 | $6 | $16 |
| Influenza vaccine, quadrivalent, 0.5 ml dosage | 14 | $20 | $30 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
14 | $34 | $40 |
| Ultrasound-guided small joint aspiration or injection This procedure involves removing fluid from or injecting medication into a small joint while using ultrasound imaging to guide the needle placement. |
13 | $72 | $150 |
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.
18.6% high complexity
49.9% medium
31.5% routine
Industry Payment Transparency
Open Payments through 2024 ↗$11,511
Total received (2018-2024)
Avg $1,644/year across 7 years
Top 13% in CA for optician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
34
Companies
483
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.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$9,140 (79.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$2,371 (20.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$108
2023
$13
2022
$1,622
2021
$1,016
2020
$806
2019
$5,265
2018
$2,682
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$108
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Cardinal Health 108, LLC
$2,371
Amgen Inc.
$2,072
Janssen Biotech, Inc.
$1,215
Novartis Pharmaceuticals Corporation
$975
Radius Health, Inc.
$628
Lilly USA, LLC
$465
E.R. Squibb & Sons, L.L.C.
$423
AbbVie, Inc.
$388
Genentech USA, Inc.
$329
Horizon Therapeutics plc
$308
AstraZeneca Pharmaceuticals LP
$285
Mallinckrodt Enterprises LLC
$257
Mallinckrodt Hospital Products Inc.
$213
PFIZER INC.
$167
Celgene Corporation
$157
GlaxoSmithKline, LLC.
$155
Horizon Pharma plc
$142
Merck Sharp & Dohme Corporation
$129
ABBVIE INC.
$119
UCB, Inc.
$108
AbbVie Inc.
$92
Antares Pharma, Inc.
$75
Aurinia Pharma U.S., Inc.
$73
Bioventus LLC
$68
Boehringer Ingelheim Pharmaceuticals, Inc.
$64
Mallinckrodt LLC
$55
DePuy Synthes Sales Inc.
$37
Flexion Therapeutics, Inc.
$30
Sobi, Inc
$27
GENZYME CORPORATION
$25
Takeda Pharmaceuticals U.S.A., Inc.
$21
Organon LLC
$18
ARBOR PHARMACEUTICALS, INC.
$14
Janssen Scientific Affairs, LLC
$10
Top 3 companies account for 49.2% of all-time payments
Associated products mentioned in payments ›
ACTHAR · Actemra · BENLYSTA · COSENTYX · Cimzia · EVENITY · EVUSHELD · Enbrel · FASENRA · FORTEO · Horizant · Humira · ILARIS · INFLECTRA · KEVZARA · KINERET · KRYSTEXXA · LUPKYNIS · LYRICA · MONOVISC · OFEV · ORENCIA · ORTHOVISC · Otezla · Otrexup · Prolia · RAYOS · REMICADE · RENFLEXIS · RINVOQ · Rinvoq · Rituxan · SAPHNELO · SIMPONI · SIMPONI ARIA · STELARA · Supartz · Supartz FX Sodium Hyaluronate · TALTZ · TREMFYA · Tymlos · Uloric · XELJANZ · XYOSTED · Zilretta
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 →
Most payments (79%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Opticians within 10 mi
1,249
Per 100K population
12.7
County median income
$87,760
Nearest hospital
VALLEY PRESBYTERIAN HOSPITAL
0.0 mi
0.0 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. Weidmann is a mixed practice specialist, with above-average Medicare volume (top 3% in CA), with low-engagement industry engagement in the top 13% of CA peers, with 20 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. Weidmann experienced with tocilizumab injection (actemra)?
Based on Medicare claims data, Dr. Weidmann performed 8,431 tocilizumab injection (actemra) 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. Weidmann receive payments from pharmaceutical companies?
Yes. Dr. Weidmann received a total of $11,511 from 34 companies across 483 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. Weidmann's costs compare to other opticians in Van Nuys?
Dr. Weidmann's average Medicare payment per service is $20. 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. Weidmann) 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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