NPPES file of Aug 9, 2026

Gregory A. Stynowick, MD

Pain Medicine Physician · Florissant, MO

Gregory A. Stynowick, MD is a pain medicine physician with a practice address in Florissant, Missouri, and NPI 1437256542, issued on Sep 20, 2006. Check the license (Missouri 2004001665, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; 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
1437256542
Name
Gregory A. Stynowick
Credential
MD
Primary taxonomy
Pain Medicine Physician 208VP0000X
License number
2004001665 MO
Self-reported in NPPES; status is on the state search
Practice location
6829 Parker RD Ste A, Florissant, MO 63033
Phone
(314) 741-2700
Enumerated
Sep 20, 2006
Record last updated
Mar 26, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(314) 741-2701
Medicare enrollment
Enrolled (PECOS I20070206000666); accepts Medicare assignment
Medical or professional school
University Of Missouri, Kansas City, School Of Medicine, 2001
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 6829 Parker RD Ste A

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

  1. Aleksandr Shoykhet, FNP-CFamily Nurse Practitioner1407263494

Verify Gregory A. Stynowick in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2004001665
    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 Missouri license search

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90% more Medicare Part D claims than the average pain medicine physician in 2024

3,985 Medicare Part D claims for 418 beneficiaries, against an average of 2,095 among the 944 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 2,643 claims were for opioids.

  1. Gregory Stynowick3,985
  2. Specialty average2,095

Most prescribed

  1. Hydrocodone-Acetaminophen1,137 claims
  2. Oxycodone-Acetaminophen717 claims
  3. Gabapentin300 claims
  4. Oxycodone Hcl291 claims
  5. Alprazolam174 claims
  6. Hydromorphone Hcl152 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; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,805.42

63 payments; by number, the most common kind was food and beverage; the largest payer was Spinal Simplicity, LLC. The 769 providers of this specialty with any payment received $3,397.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Stynowick$1,805.42
  2. Specialty average$3,397.95

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. Pain Management Medical Center, LLCFlorissant, MO

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

Pain Medicine Physician providers in Missouri

There are 12 pain medicine physician records in Missouri.

Other pain medicine physician records in Missouri

  1. Periapatna Ananth, MDSedalia, MO1922074467
  2. Alexander Beyzer, M.D.Saint Louis, MO1063526093
  3. Anthony Casanova, M.D.Springfield, MO1417996364
  4. James Cooper, DOCape Girardeau, MO1013013267
  5. James Jenkins, MDSaint Louis, MO1891712329
  6. Matthew Jones, MDManchester, MO1629096052
  7. Shayne Keddy, D.O.Potosi, MO1861465627
  8. Hafiz Khattak, M.D.Webster Groves, MO1265419683
  9. Vivek Manchanda, MDO Fallon, MO1083729941
  10. Benny Thomas, D.O.Waynesville, MO1316960115

Common questions

What is Gregory A. Stynowick, MD's NPI number?

Gregory A. Stynowick, MD's National Provider Identifier (NPI) is 1437256542, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory A. Stynowick, MD located?

The NPPES record lists a practice address at 6829 Parker RD Ste A, Florissant, MO, 63033. Phone: (314) 741-2700. Providers update this record themselves, so call before visiting.

How can I verify Gregory A. Stynowick, MD's license?

NPPES lists Missouri license number 2004001665, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory A. Stynowick, MD prescribe under Medicare Part D?

In 2024, Gregory A. Stynowick, MD had 3,985 Medicare Part D claims for 418 beneficiaries; the average among pain medicine physician prescribers was 2,095. Part D covers Medicare prescriptions only.

What is Gregory A. Stynowick, MD'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.