Jaclyn Leong, DO
NPI 1225564727 · Internal Medicine Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jaclyn Leong, DO is a Internal Medicine Physician provider in Irvine, CA (NPI 1225564727).
Provider details
- NPI number
- 1225564727
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- R2783 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
102 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 90 | $203 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 12 | $248 |
Typical Medicare-allowed amounts for these services range $203–$248 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Rosuvastatin Calcium | 22 |
| Levothyroxine Sodium | 21 |
| Lisinopril | 21 |
| Amlodipine Besylate | 18 |
| Famotidine | 15 |
| Olmesartan Medoxomil | 12 |
| Rivaroxabanbrand: Xarelto | 11 |
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 , 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
Additional practice locations (2)
- 1501 N Campbell Ave Rm 6336Tucson, AZ 85724-5040Phone: (520) 626-8818
- 1640 Newport Blvd Ste 200Costa Mesa, CA 92627-3786Phone: (714) 456-8180
Registry dates
- Enumerated
- 2017-05-04
- Last updated
- 2023-03-08
- Certified
- 2023-03-07
Frequently asked questions
- What is Jaclyn Leong's NPI number?
- Jaclyn Leong's National Provider Identifier (NPI) is 1225564727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jaclyn Leong's specialty?
- Jaclyn Leong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jaclyn Leong located?
- Jaclyn Leong's practice location on file with NPPES is 856 Health Sciences Road, Irvine, CA 92617.
- What is Jaclyn Leong's phone number?
- The practice phone number listed in the NPPES registry for Jaclyn Leong is (949) 824-7000.
- Does Jaclyn Leong accept Medicare?
- Jaclyn Leong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jaclyn Leong's NPI active?
- Yes — Jaclyn Leong's NPI (1225564727) is active in the NPPES registry as of the last update on 2023-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.