Jeffrey Chen, D.O.
NPI 1801120191 · Critical Care Medicine (Internal Medicine) Physician · Monterey Park, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Chen, D.O. is a Critical Care Medicine (Internal Medicine) Physician provider in Monterey Park, CA (NPI 1801120191).
Provider details
- NPI number
- 1801120191
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A10906 (CA)
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
16 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
3,707 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 | 1,769 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 508 | $81 |
| Critical Care, First 30-74 Minutes99291 | 495 | $216 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 320 | $138 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 188 | $179 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 1,115 | 298 |
| Montelukast Sodium | 653 | 150 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 479 | 90 |
| Omeprazole | 474 | 132 |
| Fluticasone Propionate | 257 | 90 |
| Albuterol Sulfatebrand: Ventolin Hfa | 214 | 64 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,040 across 72 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
- 2009-09-20
- Last updated
- 2020-04-20
- Certified
- 2020-04-20
Frequently asked questions
- What is Jeffrey Chen's NPI number?
- Jeffrey Chen's National Provider Identifier (NPI) is 1801120191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Chen's specialty?
- Jeffrey Chen is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Chen located?
- Jeffrey Chen's practice location on file with NPPES is 500 N Garfield Ave, Monterey Park, CA 91754.
- What is Jeffrey Chen's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Chen is (626) 280-4393.
- Does Jeffrey Chen accept Medicare?
- Jeffrey Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Chen's NPI active?
- Yes — Jeffrey Chen's NPI (1801120191) is active in the NPPES registry as of the last update on 2020-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.