Michelle Zhang
NPI 1538521422 · Pulmonary Disease Physician · Encinitas, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Zhang is a Pulmonary Disease Physician provider in Encinitas, CA (NPI 1538521422).
Provider details
- NPI number
- 1538521422
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A163284 (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 tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,228 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 473 | $121 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 144 | $176 |
| Critical Care, First 30-74 Minutes99291 | 128 | $213 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 95 | $137 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 90 | $187 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 87 | 42 |
| Prednisone | 81 | 50 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 68 | 20 |
| Apixabanbrand: Eliquis | 66 | 20 |
| Budesonide/Glycopyr/Formoterolbrand: Breztri Aerosphere | 36 | — |
| Rivaroxabanbrand: Xarelto | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$641 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-22
- Last updated
- 2022-04-19
- Certified
- 2022-04-19
Frequently asked questions
- What is Michelle Zhang's NPI number?
- Michelle Zhang's National Provider Identifier (NPI) is 1538521422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Zhang's specialty?
- Michelle Zhang is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Zhang located?
- Michelle Zhang's practice location on file with NPPES is 354 Santa Fe Dr, Encinitas, CA 92024-5142.
- What is Michelle Zhang's phone number?
- The practice phone number listed in the NPPES registry for Michelle Zhang is (760) 633-6507.
- Does Michelle Zhang accept Medicare?
- Michelle Zhang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Zhang's NPI active?
- Yes — Michelle Zhang's NPI (1538521422) is active in the NPPES registry as of the last update on 2022-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.