npidexNPI registry + Medicare data

ALEXANDER CHEN, MD

Pulmonary Disease Physician · SAINT LOUIS, MO

Individual Active NPI 1881802783

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024229435$359,613$53,375$40,771
2023186305$247,751$43,036$33,908
2022205345$285,482$52,241$40,942

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99291Critical care, first 30-74 minutes66$205$161
31654Exam of lung airways with diagnostic or therapeutic procedure on growths using an endoscope and ultrasound44$64$50
31629Needle biopsy of windpipe cartilage, airway, and/or lung using an endoscope44$149$115
31652Exam of lung airways and sampling of lymph nodes using an endoscope and ultrasound guidance, 1-2 lymph nodes39$209$151
99152Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes38$12$9
99213Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more32$86$61
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes28$76$59
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more27$120$92
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes21$126$100
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more13$161$128

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Pulmonary Disease Physician207RP1001X✓2004016896MO

Medicare eligibility

Part B
Yes
DME
Yes
Home health
Yes
Power mobility
Yes
Hospice
Yes

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Source: NPPES (public domain) and CMS Medicare Physician & Other Practitioners data. Not affiliated with CMS, NPPES, or any government agency.