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Edit this profileAt a glance
- 4060 4Th Ave, Suite 505, San Diego, CA 92103
About Dr. Willging
Based in San Diego, CA, Stefan A. Willging, MD is listed in the NPI registry under internal medicine. According to Medicare claims data, Stefan cared for 2,418 Medicare patients across 4,757 services. The services billed most often include chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month, injection, triamcinolone acetonide, not otherwise specified, 10 mg, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. NPI 1679523518 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (619) 298-1311
- Email not available
Practice Locations
4060 4TH AVE SUITE 505
San Diego, CA 92103
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
Procedures Most Often Billed to Medicare
4,757 services · 2,418 patients · 22 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
79 | More often than most peers in Internal Medicine |
| Removal of impacted ear wax | Procedure | 69210 |
31 | More often than most peers in Internal Medicine |
| Injection of trigger points, 3 or more muscles | Procedure | 20553 |
31 | As often as other peers in Internal Medicine |
| Injection into tendon at attachment to bone or muscle | Procedure | 20551 |
20 | Too few peers to compare |
| Injection of trigger points, 1-2 muscles | Procedure | 20552 |
19 | Less often than most peers in Internal Medicine |
| Removal of impacted ear wax by washing | Procedure | 69209 |
17 | As often as other peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
83 | More often than most peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
59 | More often than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
42 | As often as other peers in Internal Medicine |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
775 | More than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internists in San Diego 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Willging?
Dr. Willging is an internist in San Diego, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Dr. Willging's address?
Dr. Willging is listed at 4060 4Th Ave Suite 505, San Diego, CA 92103. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Willging?
The number on file is (619) 298-1311. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Willging's NPI number?
Dr. Willging's National Provider Identifier is 1679523518. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Willging train?
Dr. Willging attended Other, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Willging been practicing?
Dr. Willging has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Willging perform?
According to Medicare billing data, Dr. Willging performs procedures including aspiration and/or injection of fluid from large joint, removal of impacted ear wax and injection of trigger points, 3 or more muscles; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Willging confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Willging. If this is you, claiming it is free.
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