What is Huan Guu's specialty?

Huan Guu (NPI 1952352668) is a Medicare-billing provider whose primary specialty is Internal Medicine in Mission Viejo, CA.

Where does Huan Guu practice?

Huan Guu practices in Mission Viejo, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1952352668.

How much does Medicare pay Huan Guu?

Huan Guu (NPI 1952352668) received approximately $485K in total Medicare Part B payments, serving 758 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1952352668

Huan GuuM.D.

PRACTICEPAVLO ISAK PSCSee all providers at this practice →

Internal MedicineMission Viejo, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,623

Unique beneficiaries

—

Total services

5,224

Distinct HCPCS

Medicare payment

$484K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

10,407

Beneficiaries

—

Total drug cost

$519K

Distinct drugs

161

Brand share

23.0%

Top prescribed drugs

Atorvastatin Calcium589 claims

Amlodipine Besylate495 claims

Apixaban471 claims

Levothyroxine Sodium430 claims

Gabapentin407 claims

QUALITY · MIPS · 2024

Final MIPS score

98.1

Quality

100.0

Cost

66.5

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.97%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Huan Guu's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 136 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
AG MURRIETA SNF, LLC	374	1,706
NPI 1437161577	253	1,334
Steven Sorenson Diagnostic Radiology · Redlands, CA	246	2,097
Jeffrey Dym Diagnostic Radiology · Laguna Niguel, CA	215	1,689
HERREN ENTERPRISES INC	179	736
Navid Jahed Diagnostic Radiology · Mission Viejo, CA	168	1,119
MISSION AMBULANCE INC	162	488
UNIVERSAL HEALTH SERVICES OF RANCHO SPRINGS INC	159	475
Jackson Penry Diagnostic Radiology · Mission Viejo, CA	145	885
KAN-DI-KI LLC	136	568
EMERICARE INC	111	725
SADDLEBACK MEMORIAL MEDICAL CENTER	102	421

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events