DR. KAREN REYNOLDS JOHNSTON (MD) – General Practice Physician, NPI 1326518325
General Practice Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
57 PATHOLOGY in HI
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Provider Addresses for DR. KAREN REYNOLDS JOHNSTON (MD)
Farrington Highway, Waianae, Honolulu County, Hawaii, 96792, United States
WAIANAE, HI 967923128
Phone: (808) 697-3300
Type: Location
478, East Charleston Road, Fairmeadow, Palo Alto, Santa Clara County, California, 94040-1432, United States
PALO ALTO, CA 943064235
Phone: (650) 813-1471
Type: Mailing
478 E CHARLESTON RD
PALO ALTO, CA 943064235
Phone: (650) 380-9149
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: 2022-08-18
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20220818000761 | I | Pathology | 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 |
|---|---|---|---|---|
| 99308 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 808 | 166 | $0 |
| 99304 | Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 143 | 143 | $0 |
| 99307 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 114 | 88 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 103 | 33 | $0 |
Insurance plans in this area (ZIP 96792)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Plastic And Reconstructive Surgery | CA | |
| General Surgery | MT | |
| P A T H O L O G Y | CA | |
| Physician Assistant | FL | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA | |
| General Surgery, Colorectal Surgery (Proctology) | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA |
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