NPPES file of Aug 9, 2026

John Herrington Kosko, M.D.

Orthopaedic Foot and Ankle Surgery Physician · Hattiesburg, MS

John Herrington Kosko, M.D. is an orthopaedic foot and ankle surgery physician with a practice address in Hattiesburg, Mississippi, and NPI 1295937928, issued on Jun 4, 2007. Check the license (Mississippi 21148, 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
1295937928
Name
John Herrington Kosko
Credential
M.D.
Primary taxonomy
Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
License numbers
21148 MS
T1810 MS
2010-00801 NC
Self-reported in NPPES; status is on the state search
Practice location
3688 Veterans Memorial Dr, Hattiesburg, MS 39401
Phone
(601) 554-7400
Enumerated
Jun 4, 2007
Record last updated
Jul 27, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(601) 554-7488
Medicaid ID
PENDING NC
Medicare enrollment
Enrolled (PECOS I20110824000229); accepts Medicare assignment
Medical or professional school
University Of Mississippi School Of Medicine, 2005
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 3688 Veterans Memorial Dr

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

  1. James Antinnes, M.D.,Orthopaedic Surgery of the Spine Physician1215966130
  2. Rocco Barbieri, M.D.,Orthopaedic Hand Surgery Physician1942239090
  3. Ava Bell, MDSpecialist1467543611
  4. Marshall Bynum, PAMedical Physician Assistant1174980213
  5. Constantine Charoglu, M.D.,Orthopaedic Hand Surgery Physician1255360186
  6. Richard Conn, M.D.,Adult Reconstructive Orthopaedic Surgery Physician1902835044

Verify John Herrington Kosko 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 21148
    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

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46% more Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024

329 Medicare Part D claims for 165 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. 78 claims were for opioids.

  1. John Kosko329
  2. Specialty average225

Most prescribed

  1. Gabapentin40 claims
  2. Famotidine35 claims
  3. Sulfamethoxazole-Trimethoprim32 claims
  4. Hydrocodone-Acetaminophen28 claims
  5. Meloxicam28 claims
  6. Tramadol Hcl28 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.

No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

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

Industry payments in 2024: $3,209.92

11 payments; by number, the most common kind was food and beverage; the largest payer was Linvatec Corporation. The 643 providers of this specialty with any payment received $23,314.63 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Kosko$3,210
  2. Specialty average$23,315

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. Southern Bone And Joint Specialists, PAHattiesburg, MS

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

Orthopaedic Foot and Ankle Surgery Physician providers in Mississippi

There are 5 orthopaedic foot and ankle surgery physician records in Mississippi.

The 4 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes

  1. Judith Smith, MDBiloxi, MS 395311659315042
  2. Daniel Ross, MDFlowood, MS 392321841724408
  3. Lori Reed, MDJackson, MS 392161285639955
  4. Jeremy Adams, M.D.Tupelo, MS 388011023458452

Common questions

What is John Herrington Kosko, M.D.'s NPI number?

John Herrington Kosko, M.D.'s National Provider Identifier (NPI) is 1295937928, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Herrington Kosko, M.D. located?

The NPPES record lists a practice address at 3688 Veterans Memorial Dr, Hattiesburg, MS, 39401. Phone: (601) 554-7400. Providers update this record themselves, so call before visiting.

How can I verify John Herrington Kosko, M.D.'s license?

NPPES lists Mississippi license number 21148, 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 John Herrington Kosko, M.D. prescribe under Medicare Part D?

In 2024, John Herrington Kosko, M.D. had 329 Medicare Part D claims for 165 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.

What is John Herrington Kosko, M.D.'s MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.