Krystal Leong
NPI 1689949760 · Internal Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Krystal Leong is a Internal Medicine Physician provider in Oakland, CA (NPI 1689949760).
Provider details
- NPI number
- 1689949760
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A127738 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 191 | 68 |
| Atorvastatin Calcium | 186 | 75 |
| Gabapentin | 120 | 43 |
| Losartan Potassium | 117 | 46 |
| Hydrochlorothiazide | 107 | 35 |
| Lisinopril | 105 | 32 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-03-21
- Last updated
- 2021-12-15
Frequently asked questions
- What is Krystal Leong's NPI number?
- Krystal Leong's National Provider Identifier (NPI) is 1689949760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Krystal Leong's specialty?
- Krystal Leong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Krystal Leong located?
- Krystal Leong's practice location on file with NPPES is 280 W Macarthur Blvd, Oakland, CA 94611-5642.
- What is Krystal Leong's phone number?
- The practice phone number listed in the NPPES registry for Krystal Leong is (510) 752-1000.
- Does Krystal Leong accept Medicare?
- Krystal Leong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Krystal Leong's NPI active?
- Yes — Krystal Leong's NPI (1689949760) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.