Kalena Hwang, M.D.
NPI 1225088164 · Internal Medicine Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kalena Hwang, M.D. is a Internal Medicine Physician provider in Irvine, CA (NPI 1225088164).
Provider details
- NPI number
- 1225088164
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A89575 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
715 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 194 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 176 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 162 | $139 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 133 | $140 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 19 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 443 | 144 |
| Amlodipine Besylate | 304 | 91 |
| Levothyroxine Sodium | 238 | 74 |
| Lisinopril | 225 | 60 |
| Rosuvastatin Calcium | 202 | 64 |
| Alendronate Sodium | 167 | 49 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2026-01-16
- Certified
- 2026-01-16
Frequently asked questions
- What is Kalena Hwang's NPI number?
- Kalena Hwang's National Provider Identifier (NPI) is 1225088164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kalena Hwang's specialty?
- Kalena Hwang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kalena Hwang located?
- Kalena Hwang's practice location on file with NPPES is 2 Osborn St Ste 180, Irvine, CA 92604-8676.
- What is Kalena Hwang's phone number?
- The practice phone number listed in the NPPES registry for Kalena Hwang is (949) 417-9820.
- Does Kalena Hwang accept Medicare?
- Kalena Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kalena Hwang's NPI active?
- Yes — Kalena Hwang's NPI (1225088164) is active in the NPPES registry as of the last update on 2026-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.