CAROLYN M JOHNSTON (MD) – Gynecologic Oncology Physician, NPI 1417040544
Gynecologic Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for CAROLYN M JOHNSTON (MD)
1500 East Medical Center Dr
1st floor Cancer & Geriatrics Ctr Recp C
Ann Arbor, MI 481095902
Phone: (734) 647-8906
Type: Location
3300 Main St
Springfield, MA 011071112
Phone: (413) 794-5505
Fax: (413) 794-7333
Type: Location
211, Avenue G, Apalachicola, Franklin County, Florida, 32320, United States
APALACHICOLA, FL 323201576
Phone: (734) 936-2047
Type: Mailing
1775, One Healing Place, Tallahassee, Leon County, Florida, 32308, United States
TALLAHASSEE, FL 323084600
Phone: (850) 431-5360
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: 2020-03-14
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 |
|---|---|---|---|---|
| I20200314000013 | I | Gynecological Oncology | GA | 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 48109)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| R H E U M A T O L O G Y | KY | |
| Cardiovascular Disease (Cardiology), Internal Medicine | FL | |
| Physician Assistant | FL | |
| E N D O C R I N O L O G Y | MN | |
| - | FL | |
| Internal Medicine | FL | |
| - | IA | |
| Physician Assistant | FL | |
| Nurse Practitioner | FL | |
| Nurse Practitioner | OH |
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