David Chayawatna, FNP-C
NPI 1457913485 · Nurse Practitioner · Camarillo, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chayawatna, FNP-C is a Nurse Practitioner provider in Camarillo, CA (NPI 1457913485).
Provider details
- NPI number
- 1457913485
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Male
- Sole proprietor
- No
- License
- 95011991 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Glipizide | 113 | 66 |
| Empagliflozinbrand: Jardiance | 108 | 47 |
| Metformin Hclbrand: Metformin Hcl Er | 79 | 36 |
| Insulin Glargine-Yfgn | 70 | 35 |
| Insulin Nph Human Isophanebrand: Humulin N Kwikpen | 66 | 30 |
| Metformin Hcl | 66 | 36 |
| Pen Needle, Diabetic |
Practice location
Mailing address
Additional practice locations (1)
- 2200 E Gonzales RdOxnard, CA 93036-0619Phone: (805) 383-2109
Registry dates
- Enumerated
- 2019-06-29
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is David Chayawatna's NPI number?
- David Chayawatna's National Provider Identifier (NPI) is 1457913485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Chayawatna's specialty?
- David Chayawatna is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is David Chayawatna located?
- David Chayawatna's practice location on file with NPPES is 2620 Las Posas Rd, Camarillo, CA 93010-3400.
- What is David Chayawatna's phone number?
- The practice phone number listed in the NPPES registry for David Chayawatna is (805) 383-2109.
- Does David Chayawatna accept Medicare?
- David Chayawatna is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Chayawatna's NPI active?
- Yes — David Chayawatna's NPI (1457913485) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.