KAREN A KOVALOW-ST. JOHN (M.D.) – Rheumatology Physician, NPI 1336146281
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
129 RHEUMATOLOGY in IN
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Provider Addresses for KAREN A KOVALOW-ST. JOHN (M.D.)
601, Gateway Boulevard, Chesterton, Porter County, Indiana, 46304, United States
CHESTERTON, IN 46304
Phone: (219) 921-1444
Fax: (219) 921-5303
Type: Location
8329 BRIMHALL RD STE 801
BAKERSFIELD, CA 933122243
Phone: (661) 695-8385
Fax: (661) 679-6801
Type: Mailing
77 CASA ST STE 101
SAN LUIS OBISPO, CA 934055804
Phone: (661) 695-8385
Fax: (661) 679-6801
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 332 Open Payments records for all available years, with a total value of $7,028.
Total Amount is formed as General ($7,028) + Research ($0) + Ownership ($0) = $7,028.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: ABBVIE INC. ($1,455).
Total Amount
$7,028
General + Research + Ownership
Payments
332
Total payment records
General Amount
$7,028
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,455 |
| Amgen Inc. | $1,340 |
| Janssen Biotech, Inc. | $1,134 |
| Novartis Pharmaceuticals Corporation | $745 |
| GlaxoSmithKline, LLC. | $310 |
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: 2021-01-19
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 |
|---|---|---|---|---|
| I20210119001736 | I | Rheumatology | CA | 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 |
|---|---|---|---|---|
| J3262 | Injection, tocilizumab, 1 mg | 35,321 | 17 | $0 |
| J1602 | Injection, golimumab, 1 mg, for intravenous use | 12,250 | 25 | $0 |
| J3111 | Injection, romosozumab-aqqg, 1 mg | 10,080 | 17 | $0 |
| J0897 | Injection, denosumab, 1 mg | 9,720 | 127 | $0 |
| J1745 | Injection, infliximab, excludes biosimilar, 10 mg | 4,280 | 24 | $0 |
Insurance plans in this area (ZIP 46304)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RHEUMATOLOGY | IN | 73562 | X-ray of knee, 3 views | 40 | 20 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Rheumatology, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine, Rheumatology | CA | |
| R H E U M A T O L O G Y | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA |
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