Medicare Enrolled
Dr. Gregory Tchejeyan, M.D., INC
Optician · Thousand Oaks, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Tchejeyan 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. Tchejeyan
Dr. Gregory Tchejeyan is an optician specialist in Thousand Oaks, CA, with 21 years of NPI registration. Based on federal Medicare data, Dr. Tchejeyan performed 7,023 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Tchejeyan received a total of $3,807 from 10 pharmaceutical and/or device companies across 59 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Tchejeyan 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.
✓ 21 years of NPI registration
▲ Top 13% volume in CA
$3,807 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗7,023
Medicare services
Top 13% in CA for optician
Not available
Unique patients (not deduplicated)
$68
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| Injection, mepivacaine hydrochloride, per 10 ml | 2,492 | $2 | $8 |
| Injection, methylprednisolone acetate, 40 mg | 703 | $6 | $50 |
| 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. |
681 | $103 | $228 |
| 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. |
567 | $72 | $155 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
487 | $59 | $536 |
| 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. |
202 | $120 | $348 |
| Viscosupplementation injection for joint An injection of hyaluronic acid or a derivative into a joint to provide lubrication and cushioning. |
200 | $59 | $350 |
| Hip X-ray, minimum 4 views An X-ray imaging test of the hip joint using at least four different angles to visualize the bones and surrounding structures. |
195 | $50 | $250 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
187 | $40 | $153 |
| 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. |
163 | $34 | $131 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
143 | $31 | $109 |
| 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. |
128 | $31 | $107 |
| X-ray of shoulder blade An X-ray image of the shoulder blade (scapula) to visualize its structure and check for abnormalities. |
88 | $21 | $110 |
| Computer-assisted surgery for muscle and bone procedure A surgical procedure involving muscles or bones that utilizes computer technology to assist with planning or execution. |
69 | $121 | $1,800 |
| Knee joint incision for exploration, biopsy, or foreign body removal A surgical procedure involving an incision into the knee joint to explore the area, take a tissue sample, or remove a foreign object. |
58 | $211 | $3,563 |
| Kneecap realignment surgery A surgical procedure to repair a dislocating kneecap by realigning the patella within the knee joint. |
58 | $324 | $5,537 |
| Repair of multiple hamstring tendons in leg Surgical repair of several hamstring tendons in the leg. This procedure addresses damage to the muscles at the back of the thigh. |
57 | $256 | $4,296 |
| Partial removal of shin bone | 57 | $360 | $6,266 |
| Partial removal of thigh or lower leg bones Surgical procedure to remove part of the thigh bone (femur) or lower leg bones (tibia or fibula). |
55 | $405 | $6,367 |
| Removal of kneecap Surgical removal of the kneecap (patella) from the knee joint. |
46 | $287 | $4,864 |
| Drug delivery implant insertion A procedure to place an implant that releases medication into the body's tissue. |
45 | $26 | $1,042 |
| Incision of back knee joint capsule A surgical procedure involving an incision into the posterior capsule of the knee joint. |
45 | $354 | $6,020 |
| Musculoskeletal surgical navigation with imaging guidance A surgical procedure that uses imaging technology to guide orthopedic operations on the musculoskeletal system. |
41 | $184 | $2,500 |
| Total knee replacement | 38 | $1,091 | $11,375 |
| Hip joint incision for exploration or drainage A surgical procedure involving an incision into the hip joint to explore the area, drain fluid, or remove a foreign body. |
35 | $409 | $7,211 |
| Cyst or growth removal from hip or thigh bone with bone graft Surgical removal of a cyst or growth from the hip, pubic, or thigh bone, using a portion of the patient's own bone to fill the resulting defect. |
35 | $228 | $3,814 |
| Partial removal of deep cyst or growth of hip, pubic, or head of thigh bone with self bone graft This procedure involves the partial removal of a deep cyst or growth from the hip, pubic, or head of the thigh bone. It includes the use of a bone graft taken from the patient's own body to aid in reconstruction. |
34 | $428 | $6,827 |
| Tendon injection at attachment site A procedure involving the injection of medication into a tendon where it attaches to bone or muscle. |
29 | $47 | $449 |
| Total hip replacement Surgical procedure to replace the thigh bone and hip joint with artificial components. |
29 | $1,096 | $10,646 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
17 | $29 | $129 |
| Imaging guidance for procedure, 60 minutes or less Use of imaging technology to guide a medical procedure. This service lasts 60 minutes or less. |
15 | $13 | $539 |
| Knee joint replacement Surgical procedure to replace a knee joint with an artificial implant. |
12 | $978 | $8,191 |
| 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. |
12 | $130 | $305 |
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. These counts do not measure clinical quality or years of experience.
2.9% high complexity
57.3% medium
39.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,807
Total received (2018-2024)
Avg $544/year across 7 years
Top 27% in CA for optician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
10
Companies
59
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$137
2023
$529
2022
$132
2021
$250
2020
$370
2019
$1,088
2018
$1,300
Payments by company (2024)
Stryker Corporation
$45
Globus Medical, Inc.
$43
Smith+Nephew, Inc.
$33
Zimmer Biomet Holdings, Inc.
$16
Top 3 companies account for 88.1% of 2024 payments
All-time payments by company (2018-2024) ›
Stryker Corporation
$2,268
Zimmer Biomet Holdings, Inc.
$838
DePuy Synthes Sales Inc.
$234
Smith+Nephew, Inc.
$164
Fidia Pharma USA Inc.
$130
Micromed Inc
$54
Globus Medical, Inc.
$43
Nevro Corp.
$30
SI-BONE, INC.
$30
Trice Medical, Inc.
$17
Top 3 companies account for 87.7% of all-time payments
Associated products mentioned in payments ›
AFFIRM · Bioinductive Implant with Arthroscopic Delivery System - Medium · Biomet SpinalPak · Comprehensive Shoulder System · HEALICOIL · HYMOVIS · IFUSE IMPLANT · MAKO · MONOVISC · NA · Persona · REGENETEN · REGENETEN Shoulder · REUNION · ROSA · SPINEJACK · Senza Spinal Cord Stimulation System · T2 · TFN ADVANCED · TRIATHLON · VARIAX · mi-eye · mymobility Platform
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Opticians in nearby ZIP areas
379
County median income
$107,327
Nearest hospital to ZIP centroid (approximate)
LOS ROBLES HOSPITAL & MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Tchejeyan is a clinical cardiology specialist, with above-average Medicare volume (top 13% in CA), with 21 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. Tchejeyan experienced with injection, mepivacaine hydrochloride, per 10 ml?
Based on Medicare claims data, Dr. Tchejeyan performed 2,492 injection, mepivacaine hydrochloride, per 10 ml services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Tchejeyan receive payments from pharmaceutical companies?
Yes. Dr. Tchejeyan received a total of $3,807 from 10 companies across 59 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Tchejeyan's costs compare to other opticians in Thousand Oaks?
Dr. Tchejeyan's average Medicare payment per service is $68. 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. Tchejeyan) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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