KARIN G JOHNSON (MD) – Sleep Medicine (Psychiatry & Neurology) Physician, NPI 1295805075
Sleep Medicine (Psychiatry & Neurology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
129 SLEEP MEDICINE in MA
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Provider Addresses for KARIN G JOHNSON (MD)
280, Chestnut Street, Metro Center, Springfield, Hampden County, Massachusetts, 01103, United States
2ND FLOOR
SPRINGFIELD, MA 011991001
Phone: (413) 794-5700
Type: Mailing
3300 Main Street, Main Street, North End, Springfield, Hampden County, Massachusetts, 01107, United States
3RD FLOOR, SUITE C & D
SPRINGFIELD, MA 011071112
Phone: (413) 794-5600
Fax: (413) 794-7297
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 18 Open Payments records for all available years, with a total value of $817.
Total Amount is formed as General ($817) + Research ($0) + Ownership ($0) = $817.
Last reported payment date: 2024-11-20 • Largest payer in this snapshot: HARMONY BIOSCIENCES LLC ($330).
Total Amount
$817
General + Research + Ownership
Payments
18
Total payment records
General Amount
$817
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| HARMONY BIOSCIENCES LLC | $330 |
| JAZZ PHARMACEUTICALS INC. | $169 |
| Itamar Medical Inc | $119 |
| Avadel CNS Pharmaceuticals, LLC | $115 |
| ZOLL Respicardia, Inc. | $68 |
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: 2008-08-12
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 |
|---|---|---|---|---|
| I20080812000193 | I | Sleep Medicine | MA | 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 |
|---|---|---|---|---|
| 95806 | Sleep study including heart rate, breathing, airflow, and effort | 240 | 238 | $0 |
| 95811 | Sleep study in sleep lab with continuous airway pressure (6 years or older) | 95 | 91 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 67 | 57 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 56 | 39 | $0 |
| 95810 | Sleep study in sleep lab (6 years or older) | 46 | 46 | $0 |
Insurance plans in this area (ZIP 01199)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEUROLOGY | MA | 95806 | Unattended sleep study with recording of heart rate, oxygen, respiratory airflow and effort | 74 | 74 |
| NEUROLOGY | MA | 95811 | Sleep monitoring of patient (6 years or older) in sleep lab with continued pressured respiratory assistance by mask or breathing tube | 219 | 203 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | MA | |
| Anesthesiology, Pain Management | MA | |
| Physician Assistant | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA |
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