Tanya Nanayakkara, M.D.
NPI 1255644100 · Family Medicine Physician · Corona, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tanya Nanayakkara, M.D. is a Family Medicine Physician provider in Corona, CA (NPI 1255644100).
Provider details
- NPI number
- 1255644100
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- C165533 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
777 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 252 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 183 | $132 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 110 | $133 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 59 | $26 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 53 | $15 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 252 | 86 |
| Lisinopril | 153 | 44 |
| Levothyroxine Sodium | 139 | 39 |
| Amlodipine Besylate | 122 | 41 |
| Metformin Hcl | 101 | 34 |
| Losartan Potassium | 98 | 33 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$606 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-21
- Last updated
- 2024-09-30
- Certified
- 2024-09-30
Frequently asked questions
- What is Tanya Nanayakkara's NPI number?
- Tanya Nanayakkara's National Provider Identifier (NPI) is 1255644100, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tanya Nanayakkara's specialty?
- Tanya Nanayakkara is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tanya Nanayakkara located?
- Tanya Nanayakkara's practice location on file with NPPES is 2250 S Main St Ste 104, Corona, CA 92882-2538.
- What is Tanya Nanayakkara's phone number?
- The practice phone number listed in the NPPES registry for Tanya Nanayakkara is (951) 737-1454.
- Does Tanya Nanayakkara accept Medicare?
- Tanya Nanayakkara is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tanya Nanayakkara's NPI active?
- Yes — Tanya Nanayakkara's NPI (1255644100) is active in the NPPES registry as of the last update on 2024-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.