Providers
All 14 in CA
TIEN T VO, MD
NPI 1891964904, individual, El Centro, CA, Internal Medicine
4
Evidence tier
structure or single-organization volume
- Hours beyond a day in 14 months, but with up to 15009 patients a month, which points to a supervising clinician on the claims rather than one person's hours.
- Records needed.
score 52 of 100, rank 8458, $4.0M at stake
Public list actions
OIG exclusion November 20, 2024 under section 1128b1
Physician (MD, DO), General Practice, EL Centro, CA
Hours billed per day
Medicaid billing converted into hours of hands-on care per day. The lower bound counts one unit per claim line and needs no price; the other two divide dollars by a unit price, the conservative one at 1.5 times the price. The clinician on the claim may be a supervisor under state rules, so billing organizations are counted too.
| month | what was found | hours per day, lower bound | hours per day, at price | hours per day, conservative | per working day | patients | billing organizations | codes | paid |
|---|---|---|---|---|---|---|---|---|---|
| May 2020 | More hours than a day holds, even counting one unit per claim line | 33.7 | 12.8 | 8.5 | 12.5 | 2076 | 1 | 99203 99204 99213 99214 | $53K |
| Jun 2020 | More hours than a day holds, even counting one unit per claim line | 62.0 | 25.4 | 16.9 | 23.0 | 3468 | 1 | 99203 99204 99213 99214 | $102K |
| Jul 2020 | More hours than a day holds, even counting one unit per claim line | 39.8 | 18.5 | 12.3 | 16.6 | 2427 | 1 | 99203 99213 99214 | $76K |
| Nov 2020 | More hours than a day holds, even counting one unit per claim line | 33.7 | 34.8 | 23.2 | 33.2 | 3249 | 1 | 99202 99203 99212 99213 99214 | $154K |
| Dec 2020 | More hours than a day holds, even counting one unit per claim line | 73.8 | 82.4 | 55.0 | 74.1 | 7872 | 1 | 99202 99203 99212 99213 99214 | $382K |
| Jan 2021 | More hours than a day holds, even counting one unit per claim line | 45.7 | 41.5 | 27.7 | 40.8 | 5078 | 1 | 99202 99203 99212 99213 99214 | $220K |
| Aug 2021 | More hours than a day holds, even counting one unit per claim line | 33.5 | 36.3 | 24.2 | 34.1 | 3806 | 1 | 99202 99203 99212 99213 99214 | $192K |
| Sep 2021 | More hours than a day holds, even counting one unit per claim line | 52.3 | 57.4 | 38.3 | 52.2 | 5827 | 1 | 99202 99203 99204 99212 99213 99214 | $296K |
| Oct 2021 | More hours than a day holds, even counting one unit per claim line | 49.0 | 52.6 | 35.1 | 51.8 | 5830 | 1 | 99202 99203 99212 99213 99214 | $279K |
| Nov 2021 | More hours than a day holds, even counting one unit per claim line | 45.4 | 49.8 | 33.2 | 45.3 | 5239 | 1 | 99202 99203 99212 99213 99214 | $255K |
| Dec 2021 | More hours than a day holds, even counting one unit per claim line | 68.2 | 73.8 | 49.2 | 66.3 | 8054 | 1 | 99202 99203 99212 99213 99214 | $390K |
| Jan 2022 | More hours than a day holds, even counting one unit per claim line | 130.2 | 98.2 | 65.5 | 96.6 | 15009 | 1 | 99202 99203 99212 99213 99214 | $532K |
| Feb 2022 | More hours than a day holds, even counting one unit per claim line | 32.6 | 34.3 | 22.8 | 32.0 | 3481 | 1 | 99202 99203 99212 99213 99214 | $166K |
| Jul 2022 | More hours than a day holds, even counting one unit per claim line | 28.3 | 18.4 | 12.3 | 18.1 | 2927 | 1 | 99202 99203 99212 99213 99214 | $97K |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | TIEN T VO, MD |
| Type | Individual |
| Status | Active |
| NPI issued | February 22, 2008, last updated April 2, 2025 |
| Practice location | 1699 N IMPERIAL AVE, El Centro, CA 92243-1320, 760-352-2551 |
| Specialties | Internal Medicine (207R00000X, primary, license A111104 CA) Family Medicine (207Q00000X, license 247260 NY) |
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 | |
|---|---|---|---|---|---|---|---|
| 87811 | Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | $2.0M | 18% | $40 | $33 (top 5% from $45) | 81st percentile | |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | $1.9M | 17% | $49 | $44 (top 5% from $110) | 57th percentile | |
| 99212 | Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | $1.6M | 14% | $36 | $28 (top 5% from $147) | 64th percentile | |
| 87635 | Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | $804K | 7% | $49 | $44 (top 5% from $70) | 66th percentile | |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | $705K | 6% | $53 | $60 (top 5% from $133) | 41st percentile | |
| 99202 | New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | $643K | 6% | $45 | $45 (top 5% from $138) | 50th percentile | |
| G2023 | Specimen collection for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), any specimen source | $478K | 4% | $14 | $20 (top 5% from $39) | 30th percentile | |
| 87426 | Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | $324K | 3% | $28 | $32 (top 5% from $49) | 38th percentile |
Medicare Part B 2024, largest codes
| code | what it is | services | beneficiaries | paid | submitted per service | allowed per service | charge to allowed | usual for this code |
|---|---|---|---|---|---|---|---|---|
| 99457 | Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 1,159 | 217 | $40K | $122 | $50 | 2.4x | 2.2x (90th percentile 3.5x) |
| G0181 | Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow | 385 | 121 | $30K | $169 | $105 | 1.6x | 1.6x (90th percentile 2.9x) |
| 99454 | Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 608 | 151 | $22K | $148 | $51 | 2.9x | 2.6x (90th percentile 4.2x) |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 478 | 135 | $21K | $116 | $63 | 1.8x | 1.8x (90th percentile 2.9x) |
| 99349 | Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 184 | 62 | $17K | $200 | $126 | 1.6x | 2.0x (90th percentile 3.4x) |
| 99439 | Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 433 | 115 | $16K | $85 | $49 | 1.7x | 1.9x (90th percentile 3.1x) |
| 99458 | Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | 494 | 135 | $14K | $152 | $40 | 3.8x | 2.2x (90th percentile 3.5x) |
| 84443 | Blood test, thyroid stimulating hormone (tsh) | 655 | 570 | $11K | $35 | $16 | 2.1x | 3.3x (90th percentile 5.5x) |
A submitted charge many times the allowed amount is common and lawful; it matters when it is far above what other providers submit for the same code.
In this area
14 providers in Imperial County, CA carry an indicator in the public record, with $17.1M at stake between them. The most common is more hours than a day holds, on 10 of them, followed by part of a provider network on 3. 1 is tier 1: documented action, then payment.
| tier | provider | at stake | why |
|---|---|---|---|
| 1 | JAVAD AGHALOO EL Centro, CA, ranked 233 | $23K |
|
| 3 | ARIA HOSPICE LLC EL Centro, CA, ranked 1163 | $458K |
|
| 3 | ASSISTING HANDS HEALTH CARE EL Centro, CA, ranked 1768 | $0 |
|
| 3 | IMPERIAL CARE LLC EL Centro, CA, ranked 3534 | $0 |
|
| 4 | AMEEN ALSHAREEF EL Centro, CA, ranked 7494 | $4.0M |
|
| 4 | VISHWA KAPOOR EL Centro, CA, ranked 7604 | $2.6M |
|
| 4 | HAMID ZADEH Imperial, CA, ranked 7825 | $1.1M |
|
| 4 | BRIAN TYSON EL Centro, CA, ranked 8360 | $6.3M |
|
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.