GREGORY SZYCH (DO) – Gastroenterology Physician, NPI 1841268521
Gastroenterology Physician
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Profile Insights
NPPES metrics only — not quality of care.
978 GASTROENTEROLOGY in IL
Provider Addresses for GREGORY SZYCH (DO)
2 GOOD SAMARITAN WAY STE 420
MOUNT VERNON, IL 628642478
Phone: (618) 899-4000
Type: Location
2 Good Samaritan Way Ste 420
Mount Vernon, IL 628642478
Phone: (618) 899-4000
Type: Location
700 W FOREST AVE
STE 300
JACKSON, TN 383013937
Phone: (731) 422-0305
Fax: (731) 422-0357
Type: Location
2030 Mountain View Ave Ste 310
Longmont, CO 805013181
Phone: (720) 652-8650
Fax: (720) 652-8655
Type: Location
415 S 28th Ave
Hattiesburg, MS 394017246
Phone: (601) 268-5680
Fax: (601) 579-5240
Type: Location
863 Glenrock Rd
Norfolk, VA 235023701
Phone: (757) 252-2900
Fax: (757) 252-3235
Type: Location
404 Lincoln Dr
Herrin, IL 629483789
Phone: (618) 993-0056
Fax: (618) 993-0752
Type: Location
4550 Cobb Parkway North NW Ste 210B
Acworth, GA 301014182
Phone: (470) 267-1760
Fax: (470) 986-7002
Type: Location
1100 Belk Blvd
Oxford, MS 386555242
Phone: (662) 513-1609
Fax: (662) 232-8555
Type: Location
1904 GRANT AVE
STE G
JONESBORO, AR 724016165
Phone: (731) 425-5752
Fax: (731) 422-5743
Type: Mailing
400, Jackson County, Oregon, United States
JACKSON, TN 383020400
Phone: (731) 425-5752
Fax: (731) 422-5743
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $181.
Total Amount is formed as General ($181) + Research ($0) + Ownership ($0) = $181.
Last reported payment date: 2024-09-16 • Largest payer in this snapshot: Sumitomo Pharma America, Inc. ($112).
Total Amount
$181
General + Research + Ownership
Payments
5
Total payment records
General Amount
$181
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-16
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-02-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 13 Medicare enrollment records; no due dates published yet.
Enrollment records
13
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050922000436 | I | Gastroenterology | CO | TBD |
| I20100119000298 | I | Gastroenterology | TN | TBD |
| I20170117000140 | I | Gastroenterology | VA | TBD |
| I20180626003343 | I | Gastroenterology | AR | TBD |
| I20181109000584 | I | Gastroenterology | KY | TBD |
| I20190617000857 | I | Gastroenterology | WA | TBD |
| I20191126001476 | I | Gastroenterology | NY | TBD |
| I20200122000120 | I | Gastroenterology | IL | TBD |
| I20200225002000 | I | Gastroenterology | ME | TBD |
| I20210826000090 | I | Gastroenterology | MS | TBD |
| I20210907001242 | I | Internal Medicine | AR | TBD |
| I20230421001529 | I | Gastroenterology | GA | TBD |
| I20250210000692 | I | Gastroenterology | AL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 81 | 22 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 64 | 61 | $0 |
| 99221 | Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 37 | 37 | $0 |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 30 | 28 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 22 | 19 | $0 |
Insurance plans in this area (ZIP 62864)
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Provider's Procedures
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