TANYA NANAYAKKARA (M.D.) – Family Medicine Physician, NPI 1255644100
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,194 FAMILY PRACTICE in CA
Provider Addresses for TANYA NANAYAKKARA (M.D.)
3200 E GUASTI RD STE 200
ONTARIO, CA 917618661
Phone:
Type: Mailing
1901 TOWN AND COUNTRY DR STE 104
NORCO, CA 928603611
Phone:
Type: Mailing
2250 S MAIN ST STE 104
CORONA, CA 928822538
Phone: (951) 737-1454
Fax: (951) 737-1822
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 54 Open Payments records for all available years, with a total value of $1,279.
Total Amount is formed as General ($1,279) + Research ($0) + Ownership ($0) = $1,279.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: Access Pro Medical, LLC ($146).
Total Amount
$1,279
General + Research + Ownership
Payments
54
Total payment records
General Amount
$1,279
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Access Pro Medical, LLC | $146 |
| Novo Nordisk Inc | $125 |
| Amgen Inc. | $94 |
| PFIZER INC. | $79 |
| AstraZeneca Pharmaceuticals LP | $79 |
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: 2020-01-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20150328000140 | I | Family Practice | NY | TBD |
| I20200107002302 | I | Family Practice | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 288 | 145 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 153 | 92 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 98 | 98 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 86 | 19 | $0 |
| G0442 | Annual alcohol misuse screening, 5 to 15 minutes | 59 | 59 | $0 |
Insurance plans in this area (ZIP 91761)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Family Practice | IL | |
| Family Practice | CA | |
| General Surgery | CA | |
| Internal Medicine | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Internal Medicine, General Practice | CA | |
| Family Practice | CA | |
| Internal Medicine | CA |
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