MARK C SADDLER (MD) – Nephrology Physician, NPI 1821062282
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,996 INTERNAL MEDICINE in CO
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Provider Addresses for MARK C SADDLER (MD)
Mercy Regional Medical Center, 1010, Three Springs Boulevard, Durango, La Plata County, Colorado, 81301, United States
DURANGO, CO 813018296
Phone: (970) 247-4311
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 4 Open Payments records for all available years, with a total value of $103.
Total Amount is formed as General ($103) + Research ($0) + Ownership ($0) = $103.
Last reported payment date: 2024-01-30 • Largest payer in this snapshot: Baxter Healthcare ($49).
Total Amount
$103
General + Research + Ownership
Payments
4
Total payment records
General Amount
$103
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Baxter Healthcare | $49 |
| Travere Therapeutics, Inc. | $37 |
| GlaxoSmithKline, LLC. | $17 |
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: 2006-08-09
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050111001074 | I | Nephrology | CO | TBD |
| I20060809000527 | I | Nephrology | TX | 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 | 379 | 194 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 163 | 27 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 128 | 56 | $0 |
| 90966 | Home dialysis services per month (20 years or older) | 84 | 12 | $0 |
| 99291 | Critical care, first 30-74 minutes | 59 | 26 | $0 |
Insurance plans in this area (ZIP 81301)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | CO | |
| Radiation Oncology | TX | |
| - | CO | |
| Hospitalist, General Practice, Family Practice | CO | |
| Cardiovascular Disease (Cardiology) | NM | |
| Family Practice | OK | |
| Internal Medicine | CO | |
| - | IL | |
| H E M A T O L O G Y/ O N C O L O G Y | TX | |
| Internal Medicine | PA |
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