Joanna Libby, MD
NPI 1891283362 · Internal Medicine Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Libby, MD is a Internal Medicine Physician provider in Newport Beach, CA (NPI 1891283362).
Provider details
- NPI number
- 1891283362
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
633 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 225 | $108 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $87 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 93 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 66 | $64 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 32 | $60 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 381 | 141 |
| Amlodipine Besylate | 322 | 105 |
| Levothyroxine Sodium | 212 | 67 |
| Rosuvastatin Calcium | 159 | 55 |
| Lisinopril | 131 | 46 |
| Losartan Potassium | 124 | 47 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-30
- Last updated
- 2024-09-23
- Certified
- 2024-09-23
Frequently asked questions
- What is Joanna Libby's NPI number?
- Joanna Libby's National Provider Identifier (NPI) is 1891283362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Libby's specialty?
- Joanna Libby is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Libby located?
- Joanna Libby's practice location on file with NPPES is 360 San Miguel Dr Ste 300, Newport Beach, CA 92660-7820.
- What is Joanna Libby's phone number?
- The practice phone number listed in the NPPES registry for Joanna Libby is (949) 557-0830.
- Does Joanna Libby accept Medicare?
- Joanna Libby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Libby's NPI active?
- Yes — Joanna Libby's NPI (1891283362) is active in the NPPES registry as of the last update on 2024-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.