Grace Leng
NPI 1477263184 · Physician Assistant · Vacaville, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Leng is a Physician Assistant provider in Vacaville, CA (NPI 1477263184).
Provider details
- NPI number
- 1477263184
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
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
3 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 27 | 27 |
| Ondansetronbrand: Ondansetron Odt | 14 | 14 |
| Ibuprofen | 13 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-12-05
- Last updated
- 2022-12-05
- Certified
- 2022-12-03
Frequently asked questions
- What is Grace Leng's NPI number?
- Grace Leng's National Provider Identifier (NPI) is 1477263184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Leng's specialty?
- Grace Leng is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Grace Leng located?
- Grace Leng's practice location on file with NPPES is 1 Quality Dr, Vacaville, CA 95688-9494.
- What is Grace Leng's phone number?
- The practice phone number listed in the NPPES registry for Grace Leng is (707) 624-4000.
- Does Grace Leng accept Medicare?
- Grace Leng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Leng's NPI active?
- Yes — Grace Leng's NPI (1477263184) is active in the NPPES registry as of the last update on 2022-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.