JOAN H. MASS (MD) – Internal Medicine Physician, NPI 1295708162
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for JOAN H. MASS (MD)
12125, Woodcrest Executive Drive, Creve Coeur, Saint Louis County, Missouri, 63141, United States
SUITE 220
SAINT LOUIS, MO 631415001
Phone: (314) 317-0600
Fax: (314) 317-0606
Type: Mailing
South First Capitol Drive, Saint Charles, Saint Charles County, Missouri, 63303, United States
SAINT CHARLES, MO 633012844
Phone: (636) 947-5000
Fax: (314) 317-0606
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2005-12-27
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 |
|---|---|---|---|---|
| I20051227000010 | I | Internal Medicine | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 63141)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | KY | |
| Family Practice, Geriatric Medicine | KY | |
| Internal Medicine | NY | |
| Emergency Medicine, Internal Medicine | MS | |
| - | MO | |
| Family Practice, Hospitalist, Family Practice | FL | |
| Internal Medicine | TN | |
| Internal Medicine | SC | |
| Internal Medicine | NC | |
| - | TN |
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