NPPES file of Aug 9, 2026

Justin T. Baker, M.D.

Hematology & Oncology Physician · Jackson, MS

Justin T. Baker, M.D. is a hematology & oncology physician with a practice address in Jackson, Mississippi, and NPI 1639119589, issued on Jun 8, 2006. Check the license (Mississippi 17499, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639119589
Name
Justin T. Baker
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License numbers
17499 MS
MD40878 TN
Self-reported in NPPES; status is on the state search
Practice location
1227 N State St Ste 101, Jackson, MS 39202
Phone
(601) 355-2485
Enumerated
Jun 8, 2006
Record last updated
Dec 2, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(601) 353-1463
Medicaid ID
02108317 MS
Medicare enrollment
Enrolled (PECOS I20090205000173); accepts Medicare assignment
Medical or professional school
University Of Mississippi School Of Medicine, 2000
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1227 N State St Ste 101

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brandon BensonPharmacist1053812545
  2. Alice FergusonOncology Registered Nurse1487586905
  3. Elizabeth Herrington, D.O.Medical Oncology Physician1306043278
  4. Natale Sheehan, MDMedical Oncology Physician1518178524

Verify Justin T. Baker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
    Search for license 17499
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Mississippi license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average hematology & oncology physician in 2024

2,082 Medicare Part D claims for 365 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 89 claims were for opioids.

  1. Justin Baker2,082
  2. Specialty average877

Most prescribed

  1. Anastrozole166 claims
  2. Ondansetron Hcl124 claims
  3. Prednisone100 claims
  4. Lenalidomide84 claims
  5. Potassium Chloride77 claims
  6. Eliquis65 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $556.77

29 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Justin Baker$556.77
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Jackson Oncology AssociatesJackson, MS

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Justin T. Baker among 64 hematology & oncology physician records in Mississippi

Justin T. Baker, M.D. is one of 64 hematology & oncology physician records with a practice address in Mississippi. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 22% of them.

  • NPI issued2006 · 22% of these records are older, 52% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2000 · median 2002 among the 52 with a school on file
  • Record last updated2009 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Mississippi

There are 64 hematology & oncology physician records in Mississippi.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Grace Shumaker, M.D.Jackson, MS 392021912901513
  2. Bobby Wilkerson, M.D.Jackson, MS 392021245212844
  3. Graves Stubblefield, M.D.Jackson, MS 392061003026345
  4. Cecelia Allred, M.D.Jackson, MS 392161528167541
  5. Barbara Craft, MDJackson, MS 392161104862259
  6. Jennifer Frost, DOJackson, MS 392161710198585
  7. Samuel Hall, DOJackson, MS 392161487115838
  8. John Henegan, M.D.Jackson, MS 392161114188471

Common questions

What is Justin T. Baker, M.D.'s NPI number?

Justin T. Baker, M.D.'s National Provider Identifier (NPI) is 1639119589, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Justin T. Baker, M.D. located?

The NPPES record lists a practice address at 1227 N State St Ste 101, Jackson, MS, 39202. Phone: (601) 355-2485. Providers update this record themselves, so call before visiting.

How can I verify Justin T. Baker, M.D.'s license?

NPPES lists Mississippi license number 17499, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Justin T. Baker, M.D. prescribe under Medicare Part D?

In 2024, Justin T. Baker, M.D. had 2,082 Medicare Part D claims for 365 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

What is Justin T. Baker, M.D.'s MIPS final score?

The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.