Karen Johnston, MD
Pathology · Burlingame
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location · Wound MD PC · 15 clinicians in this group
Looking this up.
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Johnston’s office at (650) 692-9674 to ask if they take your plan before you enroll.
California Medical Board record
Licence G67445 · Current
Licensed to practise in California · since 1989 · expires 2027-04-30 · University of California, Davis School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$656,633
Medicare paid this office $656,633 for 366 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 164 | $67,238 | $73 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 206 | $13,999 | $40 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 158 | $12,120 | $77 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 32 | $9,103 | $107 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 23 | $5,354 | $74 |
See all 7 services
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 164 | $67,238 | $73 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 206 | $13,999 | $40 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 158 | $12,120 | $77 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 32 | $9,103 | $107 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 23 | $5,354 | $74 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 18 | $1,314 | $73 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 19 | $809 | $40 |
Procedures Medicare counted
| Removal of skin lesions | 1-10 | None |
| Removal of tissue | 1-10 | None |
Who their Medicare patients are
366 Original Medicare patients in 2024. Average age 78 · Under 65 7% · 85 and older 27% · Women 49% · Also on Medicaid 95% · Health risk score 2.59. Sicker patients than 9 in 10 peers; the typical pathology clinician is at 1.55.
Conditions among them: High blood pressure 75% · Dementia 58% · Diabetes 51% · Depression 43% · Heart failure 38% · Chronic kidney disease 34% · Coronary heart disease 33% · Atrial fibrillation 30% · Stroke 23% · COPD 22% · Cancer 8%.
The office billed $917,398, Medicare allowed $825,028 and paid $656,633; for 2,276 services of 17 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 366 | 2,276 | 78 | 2.59 | $917,398 | $656,633 |
| 2023 | 259 | 1,328 | 77 | 2.78 | $300,970 | $176,489 |
| 2022 | 93 | 417 | 77 | 2.55 | $62,672 | $28,121 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 7 services
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 125 | $41,372 | $65 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 41 | $11,129 | $66 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 33 | $9,775 | $95 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 113 | $7,570 | $67 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 71 | $3,452 | $36 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 30 | $2,192 | $73 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 17 | $626 | $33 |
2022: 8 services
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 52 | $10,722 | $62 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 23 | $5,651 | $82 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 19 | $3,567 | $61 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 11 | $1,550 | $82 |
| Initial nursing facility care with moderate level of medical decision making, per day at least 35 minutes | 12 | $1,393 | $116 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 12 | $960 | $80 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day at least 25 minutes | 11 | $867 | $79 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day at least 10 minutes | 16 | $695 | $39 |
Medicaid work
$50,375 in 2024
Medicaid paid $50,375 for 1,704 billed services this clinician did in 2024, up to 135 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| SBSQ NURSING FACILITY CARE LOW MDM 20 MINUTES | 1,118 | $37,610 |
| INITIAL NURSING FACILITY CARE SF/LOW MDM 25 MIN | 199 | $6,389 |
| SBSQ NURSING FACILITY CARE SF MDM 10 MINUTES | 347 | $5,818 |
| SBSQ NURSING FACILITY CARE MOD MDM 30 MINUTES | 20 | $559 |
| Patient is screened for food insecurity, housing instability, transportation needs, utility difficulties, and interpersonal safety | 20 | $0 |
| 2024 | 1,704 | 5 | 135 | $50,375 |
| 2023 | 1,676 | 4 | 64 | $26,480 |
| 2022 | 387 | 2 | 39 | $7,084 |
| 2021 | 921 | 4 | 111 | $75,712 |
| 2020 | 525 | 5 | 72 | $25,688 |
| 2019 | 273 | 1 | 34 | $0 |
See the largest Medicaid services in earlier years
2023
| SBSQ NURSING FACILITY CARE LOW MDM 20 MINUTES | 1,321 | $22,550 |
| INITIAL NURSING FACILITY CARE SF/LOW MDM 25 MIN | 194 | $2,459 |
| SBSQ NURSING FACILITY CARE MOD MDM 30 MINUTES | 90 | $996 |
| SBSQ NURSING FACILITY CARE SF MDM 10 MINUTES | 71 | $475 |
2022
| SBSQ NURSING FACILITY CARE LOW MDM 20 MINUTES | 329 | $5,598 |
| SBSQ NURSING FACILITY CARE MOD MDM 30 MINUTES | 58 | $1,486 |
2021
| Clinic visit/encounter, all-inclusive | 669 | $68,261 |
| Short return visit (20+ min) | 132 | $2,747 |
| Return visit (30+ min) | 70 | $2,366 |
| Federally qualified health center (fqhc) visit, established patient; a medically-necessary, face-to-face encounter (one-on-one) between an established patient and a fqhc practitioner during which time one or more fqhc services are rendered and includes a typical bundle of medicare-covered services that would be furnished per diem to a patient receiving a fqhc visit | 50 | $2,338 |
2020
| Clinic visit/encounter, all-inclusive | 234 | $24,677 |
| Short return visit (20+ min) | 32 | $561 |
| Return visit (30+ min) | 231 | $450 |
| Telephone evaluation and management service by a physician or other qualified health care professional who may report evaluation and management services provided to an established patient, parent, or guardian not originating from a related E/M service provided within the previous 7 days nor leading to an E/M service or procedure within the next 24 hours or soonest available appointment; 5-10 minutes of medical discussion | 14 | $0 |
| Telephone evaluation and management service by a physician or other qualified health care professional who may report evaluation and management services provided to an established patient, parent, or guardian not originating from a related E/M service provided within the previous 7 days nor leading to an E/M service or procedure within the next 24 hours or soonest available appointment; 11-20 minutes of medical discussion | 14 | $0 |
2019
| Return visit (30+ min) | 273 | $0 |
Money from drug and device companies
$64 in 2020
| 2020 | 3 | 4 | None | $64 |
| 2019 | 6 | 10 | None | $337 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Novartis Pharmaceuticals | Entresto | $26 | 2 payments
|
| Pfizer | Chantix | $22 | 1 payment
|
| Abbott Laboratories | Mitra Clip System | $16 | 1 payment
|
See all 4 published payments
| Novartis Pharmaceuticals | Meals · 2020-03-13 | Entresto | $12 |
| Pfizer | Meals · 2020-03-11 | Chantix | $22 |
| Novartis Pharmaceuticals | Meals · 2020-02-05 | Entresto | $14 |
| Abbott Laboratories | Meals · 2020-01-13 | Mitra Clip System | $16 |
See earlier years (2019)
2019: $337
| Boehringer Ingelheim Pharmaceuticals | Jardiance | $139 | 2 payments
|
| Lilly USA | Trulicity | $94 | 2 payments
|
| Gilead Sciences | Epclusa | $45 | 2 payments
|
| Novo Nordisk | Levemir | $30 | 2 payments
|
| Amgen | Aimovig | $16 | 1 payment
|
| Merck Sharp & Dohme | None | $13 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 95.2 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1326518325
- Licence
- CA G67445California G67445: Current · expires 2027-04-30
- Group
- Wound MD PC
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- General practice (208D00000X); Federal specialty code 207ZP0102X (207ZP0102X)
- Mailing address
- 478 E Charleston Rd, Palo Alto, CA, 94306
- NPI first listed
- 2018-12-03
- NPI last updated
- 2022-01-28
- NPI record certified
- 2022-01-28
This is when the NPI record was last certified, not a medical board exam.