Providers
All 16 in MD
TRISTAN J SHOCKLEY, MD
NPI 1932242542, individual, Laurel, MD, Physical Medicine & Rehabilitation
4
Evidence tier
structure or single-organization volume
- Hours beyond a day in 2 months, but with up to 1059 patients a month, which points to a supervising clinician on the claims rather than one person's hours.
- Records needed.
- Medicare submitted charges on code 99213 are 3.0 times the typical charge-to-allowed ratio for that code.
score 53 of 100, rank 8148, $1.7M 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 |
|---|---|---|---|---|---|---|---|---|---|
| May 2023 | More hours than a day holds, even counting one unit per claim line | 28.5 | 18.3 | 12.2 | 16.5 | 1050 | 1 | 99204 99213 99214 | $128K |
| Jun 2023 | More hours than a day holds, even counting one unit per claim line | 29.2 | 17.1 | 11.4 | 15.5 | 1059 | 1 | 99204 99213 99214 | $116K |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | TRISTAN J SHOCKLEY, MD |
| Type | Individual |
| Status | Active |
| NPI issued | February 14, 2007, last updated June 30, 2021 |
| Practice location | 14205 PARK CENTER DR, SUITE 204, Laurel, MD 20707-5246, 240-786-1001 |
| Mailing address | 9900 GREENBELT RD, SUITE E117, Lanham, MD 20706-2255 |
| Specialties | Physical Medicine & Rehabilitation (208100000X, license MD038330 DC) Physical Medicine & Rehabilitation (208100000X, primary, license D0068884 MD) |
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 | |
|---|---|---|---|---|---|---|---|
| G0481 | Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms | $3.4M | 36% | $125 | $98 (top 5% from $199) | 69th percentile | |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | $3.4M | 35% | $104 | $60 (top 5% from $133) | 87th percentile | |
| 80307 | Testing for presence of drug, by chemistry analyzers | $1.5M | 16% | $48 | $45 (top 5% from $110) | 54th percentile | |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | $478K | 5% | $87 | $44 (top 5% from $110) | 91st percentile | |
| 99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | $253K | 3% | $115 | $95 (top 5% from $171) | 69th percentile | |
| L0650 | Medicaid service code | $180K | 2% | $479 | $550 (top 5% from $896) | 38th percentile | |
| 93922 | Ultrasound study of arm and leg arteries | $100K | 1% | $91 | $28 (top 5% from $84) | 97th percentile | |
| 95923 | Testing of autonomic (sympathetic) nervous system function | $99K | 1% | $107 | $59 (top 5% from $111) | 92nd 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 |
|---|---|---|---|---|---|---|---|---|
| G0481 | Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms | 3,573 | 1,024 | $548K | $500 | $153 | 3.3x | 3.1x (90th percentile 6.1x) |
| 80307 | Testing for presence of drug, by chemistry analyzers | 3,576 | 1,025 | $218K | $450 | $61 | 7.4x | 3.2x (90th percentile 7.6x) |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 509 | 282 | $43K | $750 | $130 | 5.8x | 2.3x (90th percentile 3.8x) |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 115 | 74 | $6K | $600 | $89 | 6.8x | 2.2x (90th percentile 3.8x) |
| 64483 | Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | 20 | 18 | $5K | $3K | $336 | 8.9x | 5.7x (90th percentile 15.2x) |
| 98980 | Remote therapeutic monitoring treatment management services by physician or other qualified health care professional, first 20 minutes per calendar month | 98 | 55 | $4K | $133 | $49 | 2.7x | 2.1x (90th percentile 6.2x) |
| 98977 | Device supply with scheduled recording and transmission for remote monitoring of musculoskeletal system, per 30 days | 93 | 63 | $3K | $157 | $47 | 3.4x | 2.1x (90th percentile 3.9x) |
| 99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | 15 | 15 | $2K | $1K | $169 | 8.3x | 2.4x (90th percentile 3.9x) |
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
16 providers in Prince George's County, MD carry an indicator in the public record, with $29.0M at stake between them. The most common is more hours than a day holds, on 11 of them, followed by part of a provider network on 2. 1 is tier 1: documented action, then payment.
| tier | provider | at stake | why |
|---|---|---|---|
| 1 | AMSTRONG CHAPAJONG Glenarden, MD, ranked 109 | $232K |
|
| 3 | CAPITAL HOSPICE Greenbelt, MD, ranked 784 | $1.5M |
|
| 3 | MEDSTAR HEALTH VISITING NURSE ASSOCIATION, INC. Greenbelt, MD, ranked 1191 | $389K |
|
| 4 | JAVAKA MOORE Forestville, MD, ranked 7381 | $8.8M |
|
| 4 | CHINEDU AKUBUDIKE Riverdale, MD, ranked 7450 | $5.1M |
|
| 4 | KADDIE KALLON Laurel, MD, ranked 7956 | $440K |
|
| 4 | ADEBISI ALLISON Laurel, MD, ranked 7957 | $436K |
|
| 4 | PRECHELLE SHANNON Fort Washington, MD, ranked 8104 | $3.2M |
|
Recent enforcement in MD
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJCivil settlementMar 20, 2026
Health Care Management Corporation Agrees to Pay $4 Million to Resolve False Claims Act Allegations
CVR knowingly submitted claims to Medicare, Medicaid, and TRICARE for sclerotherapy, radiofrequency ablation, and endovenous laser ablation procedures to treat chronic venous insufficiency that were not clinically indicated and were medically unnecessary between January 1, 2010, and December 31, 2016.
DOJCivil settlementNov 20, 2025
Diagnostic Laboratory Agrees to Pay More Than $1 Million to Settle Alleged False Claims Act Violations
GTI agreed to pay $1.635 million to resolve allegations that it submitted Medicare claims for respiratory pathogen panels that were medically unnecessary or obtained through kickbacks paid under a marketing services agreement with an infection prevention company for laboratory test referrals from long-term care facilities.
DOJSentencedNov 13, 2025
Baltimore County Woman Sentenced for Impersonating Nurses and Aggravated Identity Theft
Amponsah used stolen nursing licenses and false educational and professional histories to obtain employment as a purported licensed nurse at no less than 40 facilities in Maryland that billed health care benefit programs including Medicare and Medicaid for services she provided, earning more than $145,000 in wages.
DOJPleaded guiltyAug 14, 2025
Baltimore County Woman Admits to Impersonating Nurses, Pleads Guilty to Aggravated Identity Theft
Amponsah used stolen nursing licenses and false educational and professional histories to obtain employment as a purported licensed nurse at no less than 40 facilities in Maryland, which billed health care benefit programs including Medicare and Medicaid for services she provided.
DOJCivil judgmentAug 11, 2025
United States Obtains More Than $1.4 Million Judgment Against Family Medical Practitioner for Fraudulent Billing
Akoto billed Medicare for auricular stimulation (P-Stim) devices using a code for a surgically implanted neurostimulator device, which Medicare does not reimburse as acupuncture.
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.