DR. LOREN NATHAN BACH (M.D.) – Surgery Physician, NPI 1205279650
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
787 GENERAL SURGERY in MO
Provider Addresses for DR. LOREN NATHAN BACH (M.D.)
621 S NEW BALLAS RD STE 560A
SAINT LOUIS, MO 631418261
Phone: (314) 251-6440
Fax: (314) 251-4456
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 10 Open Payments records for all available years, with a total value of $1,115.
Total Amount is formed as General ($1,115) + Research ($0) + Ownership ($0) = $1,115.
Last reported payment date: 2024-11-15 • Largest payer in this snapshot: Zimmer Biomet Holdings, Inc. ($939).
Total Amount
$1,115
General + Research + Ownership
Payments
10
Total payment records
General Amount
$1,115
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-15
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Zimmer Biomet Holdings, Inc. | $939 |
| Davol Inc. | $75 |
| Smith+Nephew, Inc. | $41 |
| ATRICURE, INC. | $22 |
| Integra LifeSciences Corporation | $20 |
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: 2019-09-06
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 |
|---|---|---|---|---|
| I20190906002664 | I | General Surgery | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 77 | 77 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 63 | 45 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 27 | $0 |
| 47562 | Removal of gallbladder using an endoscope | 14 | 14 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 63141)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MO | |
| Family Practice | MO | |
| Osteopathic Manipulative Medicine | MO | |
| A N E S T H E S I O L O G Y | MO | |
| Internal Medicine, Allergy/Immunology, Allergy/Immunology | MO | |
| Orthopedic Surgery | MO | |
| Internal Medicine | MO | |
| Family Practice | MO | |
| Orthopedic Surgery | MO | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | MO |
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