Providers
MALLAPPA NEELAPPA, M.D.
NPI 1861455818, individual, Yuma, AZ, Internal Medicine, Pulmonary Disease
4
Evidence tier
structure or single-organization volume
- Hours beyond a day in 1 month, but with up to 1397 patients a month across 3 billing organizations, which points to a supervising clinician on the claims rather than one person's hours.
- Records needed.
score 51 of 100, rank 8585, $2.8M at stake
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 |
|---|---|---|---|---|---|---|---|---|---|
| Jan 2020 | More hours than a day holds, even counting one unit per claim line | 25.0 | 29.0 | 19.3 | 26.0 | 1196 | 2 | 99203 99204 99214 99223 99233 | $109K |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | MALLAPPA NEELAPPA, M.D. |
| Type | Individual, sole proprietor |
| Status | Active |
| NPI issued | April 10, 2006, last updated September 10, 2025 |
| Practice location | 2281 W 24TH ST STE 7, Yuma, AZ 85364-6197, 928-344-0810 |
| Mailing address | PO BOX 6229, Yuma, AZ 85366-2510 |
| Specialties | Internal Medicine (207R00000X, license 32314 AZ) Internal Medicine, Critical Care Medicine (207RC0200X, license 32314 AZ) Internal Medicine, Pulmonary Disease (207RP1001X, primary, license 32314 AZ) |
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 | |
|---|---|---|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | $1.3M | 30% | $65 | $44 (top 5% from $110) | 77th percentile | |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | $1.1M | 25% | $63 | $60 (top 5% from $133) | 53rd percentile | |
| 99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | $720K | 16% | $106 | $95 (top 5% from $171) | 61st percentile | |
| 99203 | New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | $651K | 15% | $78 | $67 (top 5% from $121) | 66th percentile | |
| 96372 | Injection of drug or substance under skin or into muscle | $87K | 2% | $13 | $12 (top 5% from $49) | 59th percentile | |
| 87426 | Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | $71K | 2% | $34 | $32 (top 5% from $49) | 57th percentile | |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | $61K | 1% | $136 | $67 (top 5% from $174) | 89th percentile | |
| 71046 | X-ray of chest, 2 views | $60K | 1% | $19 | $8.15 (top 5% from $65) | 80th 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 |
|---|---|---|---|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 1,214 | 560 | $103K | $250 | $118 | 2.1x | 2.3x (90th percentile 3.8x) |
| 99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | 206 | 206 | $21K | $364 | $155 | 2.3x | 2.4x (90th percentile 3.9x) |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 208 | 173 | $10K | $182 | $84 | 2.2x | 2.2x (90th percentile 3.8x) |
| 71046 | X-ray of chest, 2 views | 257 | 180 | $6K | $71 | $31 | 2.3x | 3.6x (90th percentile 8.1x) |
| 99203 | New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | 124 | 124 | $5K | $242 | $104 | 2.3x | 2.4x (90th percentile 3.9x) |
| 96374 | Injection of drug or substance into vein | 190 | 21 | $5K | $100 | $35 | 2.9x | 4.3x (90th percentile 7.3x) |
| 94729 | Test to examine how well the lungs exchange gases | 93 | 93 | $4K | $110 | $52 | 2.1x | 3.1x (90th percentile 9.9x) |
| 94726 | Test to determine lung volumes using sensors | 93 | 93 | $3K | $105 | $51 | 2.0x | 3.1x (90th percentile 9.4x) |
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
6 providers in Yuma County, AZ carry an indicator in the public record, with $11.2M at stake between them. The most common is more hours than a day holds, on 6 of them.
| tier | provider | at stake | why |
|---|---|---|---|
| 4 | ENGIDA ALEMU Yuma, AZ, ranked 7987 | $331K |
|
| 4 | CARL MALMQUIST Yuma, AZ, ranked 8806 | $1.6M |
|
| 4 | REBECCA DOWNS Yuma, AZ, ranked 8987 | $993K |
|
| 5 | OLIVIA WILSON Yuma, AZ, ranked 10101 | $1.1M |
|
| 5 | SERGIO MACIAS San Luis, AZ, ranked 10692 | $5.0M | |
| 5 | MARIA MACIAS San Luis, AZ, ranked 10793 | $2.2M |
Recent enforcement in AZ
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJChargedJun 23, 2026
District of Arizona Announces Charges Involving Over $1.2 Billion in False or Fraudulent Claims as Part of National Health Care Fraud Takedown
Four defendants were charged in connection with alleged schemes involving over $1.2 billion in false or fraudulent claims for amniotic wound allografts procured through kickbacks and for substance abuse treatment services billed to Arizona Medicaid that were not provided as billed.
DOJSentencedJun 4, 2026
New River Couple Sentenced for $12 Million AHCCCS Fraud Scheme
The Currys submitted a fraudulent AHCCCS provider enrollment application concealing Thvoughn Curry's ownership role and then billed AHCCCS through 1 Family Clinic, LLC for behavioral health and substance abuse therapy services that were not provided, receiving more than $12 million.
DOJCivil settlementMar 12, 2026
Arizona Cardiology Group to Pay $4.75M to Resolve Allegations of Unnecessary Vein Ablations
Tri-City Cardiology and three physicians allegedly violated the False Claims Act by performing medically unnecessary ablations on perforator veins and incorrectly measuring or documenting blood flow duration, vein diameter, patient symptoms, and conservative therapy measures to make the procedures appear justified.
DOJConvictedFeb 27, 2026
New River Couple Convicted of $12 Million AHCCCS Fraud Scheme
The Currys submitted a fraudulent AHCCCS provider enrollment application concealing Thvoughn Curry's ownership and then billed AHCCCS for behavioral health services that were not actually provided through 1 Family Clinic, LLC, receiving more than $12 million.
DOJSentencedFeb 27, 2026
Mesa Residents Sentenced to Prison for Fraud Targeting AHCCCS
Riley and Gooch, through their behavioral health clinic New Horizons Behavioral Health, exploited AHCCCS's American Indian Health Program between 2020 and 2022 by falsely billing for services that were not provided, obtaining approximately $3.3 million.
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.