Mavis Peng, MD
NPI 1922637966 · Internal Medicine Physician · Orange, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mavis Peng, MD is a Internal Medicine Physician provider in Orange, CA (NPI 1922637966).
Provider details
- NPI number
- 1922637966
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A185893 (CA)
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
6 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
1,557 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 362 | $122 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 330 | $31 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 235 | $114 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 184 | $162 |
| Prolonged Nursing Facility Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By the Physician Or QualifiG0317 | 124 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 110 | 18 |
| Atorvastatin Calcium | 94 | 30 |
| Oxycodone Hcl | 55 | 24 |
| Amlodipine Besylate | 52 | 13 |
| Pantoprazole Sodium | 51 | 21 |
| Gabapentin | 50 | 22 |
| Tamsulosin Hcl |
Practice location
Mailing address
Additional practice locations (2)
- 757 Westwood Plz Ste 7501Los Angeles, CA 90095-1437Phone: (310) 267-9643
- 14445 Olive View DrSylmar, CA 91342-1437Phone: (747) 210-3205
Registry dates
- Enumerated
- 2020-04-02
- Last updated
- 2025-06-13
- Certified
- 2025-06-13
Frequently asked questions
- What is Mavis Peng's NPI number?
- Mavis Peng's National Provider Identifier (NPI) is 1922637966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mavis Peng's specialty?
- Mavis Peng is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mavis Peng located?
- Mavis Peng's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Mavis Peng's phone number?
- The practice phone number listed in the NPPES registry for Mavis Peng is (714) 456-8888.
- Does Mavis Peng accept Medicare?
- Mavis Peng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mavis Peng's NPI active?
- Yes — Mavis Peng's NPI (1922637966) is active in the NPPES registry as of the last update on 2025-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.