Providers
All 399 in CA
ISAAK VAYSBERG
NPI 1578514147, organization, Tarzana, CA, Physiological Laboratory
1
Evidence tier
documented action, then payment
- Listed on the Medicare revocation list since May 23, 2019.
- Medicaid still paid claims in 1 later month, $281 in total.
score 92 of 100, rank 426, $281 at stake
Public list actions
Medicare revocation effective May 23, 2019, barred from re-enrolling until May 23, 2029
424.535(a)(9) failure to report and 424.535(a)(12) other program termination (medicaid) and 424.535(a)(3) felonies, Part B Supplier - Independent Diagnostic Testing Facility (Idtf), CA
Paid after the action
Months in which Medicaid paid claims for this provider after a public action that should have triggered a screening check. This is a record of payments, not a determination that they were improper.
| list | identity check | action date | window closed | months paid after | first | last | paid after | 12 months before |
|---|---|---|---|---|---|---|---|---|
| Medicare revocation list 424.535(a)(9) failure to report and 424.535(a)(12) other program termination (medicaid) and 424.535(a)(3) felonies | Exact NPI, name verified | May 23, 2019 | May 23, 2029 | 1 | Dec 2019 | Dec 2019 | $281 | $462 |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | ISAAK VAYSBERG (also IMIG SONOMED DIAGNOSTIC) |
| Type | Organization |
| Status | Active |
| NPI issued | May 16, 2006, last updated January 19, 2012 |
| Practice location | 18455 BURBANK BLVD, STE.206, Tarzana, CA 91356-2803, 818-757-0975 |
| Authorized official | Isaak Vaysberg (Ceo) |
| Specialties | Physiological Laboratory (293D00000X, primary, license TG195 CA) |
Procedures billed
The specific codes behind the dollars. Medicaid figures come from T-MSIS (2018 to 2024) and are compared with every other provider billing the same code; Medicare figures come from the 2024 physician and supplier file and compare this provider's submitted charge with what Medicare allowed, against the usual ratio for that code.
Medicaid, largest codes
| code | what it is | paid | share | per patient-month | typical | rank among providers | |
|---|---|---|---|---|---|---|---|
| 93923 | Complete ultrasound study of arm and leg arteries | $743 | 100% | $20 | $46 (top 5% from $134) | too few months to rank | |
| 93924 | Ultrasound of leg arteries at rest and after exercise | $0 | 0% | $0.00 | $58 (top 5% from $159) | too few months to rank |
In this area
399 providers in Los Angeles County, CA carry an indicator in the public record, with $129.6M at stake between them. The most common is part of a provider network, on 347 of them, followed by paid after a public list action on 36. 52 are tier 1: documented action, then payment.
| tier | provider | at stake | why |
|---|---|---|---|
| 1 | BURBANK PREFERRED PROVIDER MEDICAL GROUP, INC Burbank, CA, ranked 17 | $67K |
|
| 1 | GOLDEN STAR LABS LLC Los Angeles, CA, ranked 32 | $41.0M |
|
| 1 | MATIAS CLINICAL LABORATORY INC Baldwin Park, CA, ranked 43 | $3.8M |
|
| 1 | HEALTHSMART PACIFIC INC Long Beach, CA, ranked 52 | $1.6M |
|
| 1 | LINDA WARREN-WATSON Lancaster, CA, ranked 71 | $828K |
|
| 1 | SOHRAB MOSHIRI Woodland Hills, CA, ranked 82 | $483K |
|
| 1 | QUALITY FAMILY HOSPICE CARE INC Tarzana, CA, ranked 92 | $375K |
|
| 1 | MARATHON HOSPICE CARE INC. North Hollywood, CA, ranked 95 | $368K |
|
Recent enforcement in CA
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJPleaded guiltyAug 27, 2026
Anaheim Woman Pleads Guilty to Submitting More Than $2.2 Million in Fraudulent Hospice Care Claims to Medicare
Galbraith submitted approximately $2,266,694 in claims to Medicare for hospice services for beneficiaries who did not have a terminal illness with a life expectancy of six months or less, and Medicare paid her company approximately $2,140,606.
DOJCivil settlementAug 26, 2026
DermTech Inc. to Pay Up to $5M to Resolve Allegations It Submitted False Claims to Medicare for Unreliable Skin Cancer Tests
DermTech Inc. submitted claims to Medicare for skin cancer tests conducted with an unvalidated positive control range and for tests lacking sufficient patient RNA, and did not retract results or adequately refund Medicare.
DOJCivil settlementAug 26, 2026
DermTech Inc. to Pay Up to $5M to Resolve Allegations It Submitted False Claims to Medicare for Unreliable Skin Cancer Tests
DermTech Inc. billed Medicare for skin cancer tests conducted using an unvalidated positive control range and for tests with insufficient patient RNA, and did not retract the results or adequately refund Medicare.
DOJCivil settlementAug 24, 2026
Medicare Advantage Provider Monogram Health Agrees to Pay $2.4 Million to Settle False Claims Act Lawsuit
Monogram knowingly submitted diagnosis codes in four HCCs that were not clinically accurate, not supported by medical record documentation, and/or did not require or affect patient care, inflating Medicare Advantage beneficiaries' risk scores and causing CMS to make higher capitated payments to Medicare Advantage Organizations.
DOJCivil settlementAug 24, 2026
Medicare Advantage Provider Monogram Health Agrees to Pay $2.4M to Settle False Claims Act Suit
Monogram Health knowingly submitted diagnosis codes within four HCCs that were not clinically accurate, not supported by medical record documentation, and/or did not require or affect patient care, inflating Medicare Advantage beneficiaries' risk scores and causing CMS to make higher capitated payments to MAOs.
Referral packet
The packet is a draft for a reviewer. It reads every public record behind this case, states what the records show with a citation for each finding, names the regulation each finding relates to, and lists the ordinary explanations to rule out first. It never asserts intent.