What is Stefan Willging's specialty?

Stefan Willging (NPI 1679523518) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Diego, CA.

Where does Stefan Willging practice?

Stefan Willging practices in San Diego, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1679523518.

How much does Medicare pay Stefan Willging?

Stefan Willging (NPI 1679523518) received approximately $243K in total Medicare Part B payments, serving 447 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1679523518

Stefan WillgingMD

Internal MedicineSan Diego, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,418

Unique beneficiaries

—

Total services

4,757

Distinct HCPCS

Medicare payment

$238K

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

8,528

Beneficiaries

—

Total drug cost

$876K

Distinct drugs

153

Brand share

25.3%

Top prescribed drugs

Atorvastatin Calcium477 claims

Rosuvastatin Calcium344 claims

Levothyroxine Sodium317 claims

Alprazolam227 claims

Amlodipine Besylate196 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

REFERRAL NETWORK

Where Stefan Willging'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). 9 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	47	133
SHARP CORONADO HOSPITAL AND HEALTHCARE CENTER	42	131
Lori Baker Diagnostic Radiology · San Diego, CA	19	35
CAMPBELL, DAVID	18	39
John Johnson Diagnostic Radiology · San Diego, CA	17	30
Amy Sorgent Nurse Practitioner · San Diego, CA	16	37
Bruce Kimura Cardiology · San Diego, CA	12	27
SHARP MEMORIAL HOSPITAL	11	21
Jeffrey Mullvain Cardiology · San Diego, CA	11	76

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