Lillian Chow, MD
NPI 1972778520 · Critical Care Medicine (Internal Medicine) Physician · Orange, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Chow, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Orange, CA (NPI 1972778520).
Provider details
- NPI number
- 1972778520
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 258974 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
661 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 255 | $217 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 58 | $9 |
| Test to Determine Lung Volumes Using Sensors94726 | 50 | $12 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 49 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 36 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 35 | $98 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 55 | 14 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 46 | 22 |
| Montelukast Sodium | 32 | — |
| Fluticasone Propionate | 32 | 18 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 31 | — |
| Budesonide/Formoterol Fumaratebrand: Breyna | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$470 across 4 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
Additional practice locations (1)
- 450 Clarkson Ave # 19Brooklyn, NY 11203-2012Phone: (718) 270-1821
Registry dates
- Enumerated
- 2008-04-24
- Last updated
- 2025-03-26
- Certified
- 2025-03-26
Frequently asked questions
- What is Lillian Chow's NPI number?
- Lillian Chow's National Provider Identifier (NPI) is 1972778520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Chow's specialty?
- Lillian Chow is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Lillian Chow located?
- Lillian Chow's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Lillian Chow's phone number?
- The practice phone number listed in the NPPES registry for Lillian Chow is (714) 880-7812.
- Does Lillian Chow accept Medicare?
- Lillian Chow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Chow's NPI active?
- Yes — Lillian Chow's NPI (1972778520) is active in the NPPES registry as of the last update on 2025-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.