npidexNPI registry + Medicare data

DAVID GUAN, M.D.

Pulmonary Disease Physician · CHATTANOOGA, TN

Individual Active NPI 1891772208

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024199470$184,529$53,589$41,723
2023244541$242,732$55,701$42,535
2022408997$746,672$127,664$99,087

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes90$73$58
99291Critical care, first 30-74 minutes76$196$157
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more67$110$72
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes37$110$88
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes29$120$96
31645Aspiration of initial secretion of lung airway using an endoscope29$132$105
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes22$160$128
32551Removal of fluid from between lung and chest cavity16$139$111
36556Insertion of non-tunneled central venous tube for infusion (5 years or older)15$77$61

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Pulmonary Disease Physician207RP1001X✓35362TN
Critical Care Medicine (Internal Medicine) Physician207RC0200X056561GA
Critical Care Medicine (Internal Medicine) Physician207RC0200X3065WI
Pulmonary Disease Physician207RP1001X22557NH
Pulmonary Disease Physician207RP1001X3065WI
Sleep Medicine (Internal Medicine) Physician207RS0012X35362TN

Medicare participation

Enrolled in Medicare

CMS lists this provider as eligible to order and refer under Medicare. They billed Medicare Part B in 2024.

Enrolment status from public CMS files — not a guarantee of coverage for any particular patient or plan. We hold no commercial-insurance network data; confirm with the provider and your insurer before an appointment.

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

Other Pulmonary Disease Physician providers in Tennessee

See all Pulmonary Disease Physician providers in Tennessee →

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