DR. GARY G SINGER (M.D.) – Nephrology Physician, NPI 1366439283
Nephrology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
319 NEPHROLOGY in MO
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Provider Addresses for DR. GARY G SINGER (M.D.)
70, Jungermann Circle, Saint Peters, Saint Charles County, Missouri, 63376, United States
SUITE 405
SAINT PETERS, MO 633761622
Phone: (636) 720-0310
Type: Mailing
70 JUNGERMANN CIR STE 302
SAINT PETERS, MO 633761637
Phone: (636) 720-0310
Fax: (636) 720-0311
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 115 Open Payments records for all available years, with a total value of $43,420.
Total Amount is formed as General ($43,420) + Research ($0) + Ownership ($0) = $43,420.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($33,137).
Total Amount
$43,420
General + Research + Ownership
Payments
115
Total payment records
General Amount
$43,420
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $33,137 |
| Fresenius USA Marketing, Inc. | $3,368 |
| Ascendis Pharma Inc | $2,280 |
| Quanta Dialysis Technologies Inc | $2,199 |
| Bayer Healthcare Pharmaceuticals Inc. | $1,147 |
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: 2005-02-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20050201000193 | I | Nephrology | MO | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 429 | 145 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 398 | 265 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 154 | 71 | $0 |
| 99457 | Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 106 | 18 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 104 | 59 | $0 |
Insurance plans in this area (ZIP 63376)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Nephrology | MO | |
| Nurse Practitioner | MO | |
| Physician Assistant | MO | |
| Registered Dietitian Or Nutrition Professional | MO | |
| Nurse Practitioner | MO | |
| Nephrology, Internal Medicine | MO |
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