MR. KEITH A AYRONS (M.D.) – Hematology & Oncology Physician, NPI 1831143775
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,536 HEMATOLOGY/ONCOLOGY in CA
Provider Addresses for MR. KEITH A AYRONS (M.D.)
850 Fair Oaks Ave Ste 310
Arroyo Grande, CA 934203929
Phone: (805) 474-5310
Fax: (805) 474-5313
Type: Location
East Church Street, Santa Maria, Santa Barbara County, California, 93454, United States
STE 301
SANTA MARIA, CA 934545915
Phone: (805) 614-7930
Fax: (805) 614-7929
Type: Mailing
East Church Street, Limaville, Stark County, Ohio, 44640, United States
SANTA MARIA, CA 934545915
Phone: (805) 349-9393
Fax: (805) 349-1155
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $257.
Total Amount is formed as General ($257) + Research ($0) + Ownership ($0) = $257.
Last reported payment date: 2024-08-26 • Largest payer in this snapshot: Exelixis Inc. ($93).
Total Amount
$257
General + Research + Ownership
Payments
11
Total payment records
General Amount
$257
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Exelixis Inc. | $93 |
| Genentech USA, Inc. | $49 |
| PFIZER INC. | $41 |
| Novartis Pharmaceuticals Corporation | $29 |
| Astellas Pharma US Inc | $26 |
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: 2018-09-28
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 |
|---|---|---|---|---|
| I20180928002705 | I | Hematology/Oncology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 928 | 283 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 439 | 305 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 90 | 90 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 49 | 37 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 24 | 24 | $0 |
Insurance plans in this area (ZIP 93420)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | NC | 96367 | Infusion into a vein for therapy prevention or diagnosis additional sequential infusion up to 1 hour | 116 | 15 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| General Surgery | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| General Surgery | CA |
Reviews
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