npidexNPI registry + Medicare data

KAREN CHANG-CHEN, MD

Endocrinology, Diabetes & Metabolism Physician · CHESTERFIELD, MO

Individual Active NPI 1508916495

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024310680$120,065$64,350$45,900
2023277581$106,315$59,224$42,890
2022329684$124,472$68,322$49,099

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more302$123$86
95251Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report130$33$25
99213Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more56$87$66
99441Telephone medical discussion with physician, 5-10 minutes39$54$37
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes37$75$58
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more35$161$109
99203New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more23$107$70
99231Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes20$47$38
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes18$125$100
99442Telephone medical discussion with physician, 11-20 minutes12$87$69

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Endocrinology, Diabetes & Metabolism Physician207RE0101X✓2006018028MO
Internal Medicine Physician207R00000X2006018028MO

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.