KARNA GENDO (M.D.) – Allergy & Immunology Physician, NPI 1720164536
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
521 ALLERGY/IMMUNOLOGY in CA
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Provider Addresses for KARNA GENDO (M.D.)
370, North Wiget Lane, Shadelands Business Park, Walnut Creek, Contra Costa County, California, 95498, United States
STE 210
WALNUT CREEK, CA 945982452
Phone: (925) 935-6252
Fax: (925) 935-7611
Type: Mailing
130, La Casa Via, Walnut Creek, Contra Costa County, California, 94598, United States
BUILDING 2, SUITE 209
WALNUT CREEK, CA 945983045
Phone: (925) 935-6252
Fax: (925) 930-0942
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $22.
Total Amount is formed as General ($22) + Research ($0) + Ownership ($0) = $22.
Last reported payment date: 2023-05-18 • Largest payer in this snapshot: Takeda Pharmaceuticals U.S.A., Inc. ($22).
Total Amount
$22
General + Research + Ownership
Payments
2
Total payment records
General Amount
$22
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
1
Ownership records
Last Payment Date
2023-05-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2011-07-18
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 |
|---|---|---|---|---|
| I20110718000349 | I | Allergy/Immunology | 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 |
|---|---|---|---|---|
| 96372 | Injection of drug or substance under skin or into muscle | 244 | 20 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 51 | 42 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 94598)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ALLERGY/IMMUNOLOGY | CA | 95004 | Injection of allergenic extracts into skin, accessed through the skin | 1366 | 47 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Physician Assistant | CA | |
| Allergy/Immunology, Internal Medicine | CA | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Allergy/Immunology, Internal Medicine | CA | |
| Physician Assistant | TX | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Physician Assistant | CA | |
| Pediatric Medicine, Allergy/Immunology | NC |
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