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Edit this profileAt a glance
- 437 N Euclid Ave, Ontario, CA 91762
About Dr. Paley
William C. Paley, D.O. is a healthcare provider in Ontario, CA specializing in family practice. William trained at Midwestern University, Chicago College of Osteopathic Med, graduating in 1981. William is also listed as specializing in family medicine. According to Medicare claims data, William cared for 49 Medicare patients across 169 services. The services billed most often include blood glucose (sugar) test performed by hand-held instrument and urinalysis, manual test. This provider record is associated with NPI 1124105754.
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
- (909) 988-2555
- Email not available
Practice Locations
437 N EUCLID AVE
Ontario, CA 91762
Conditions Commonly Evaluated or Treated
Within Family 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
Genitourinary and reproductive
- Erectile dysfunction
- Heavy periods
Musculoskeletal and pain
Neurologic and behavioral
Respiratory and infectious
- Acute bronchitis
- Asthma
- Sinus infection
Skin
Common childhood and ear conditions
- Ear infection
- Pink eye
Pain & Joints
- Arthritis
- Back pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive interventions
- Birth control counseling
- Smoking cessation counseling
Screening and testing
- Cholesterol screening
- Depression screening
- Diabetes and prediabetes screening
- EKG
Diagnostic Tests
- COVID-19 testing
- Rapid Strep and Flu Swabs
- Urine Drug Screen
Exams & Screenings
- Camp and School Physical
- Pre-Op Clearance Exam
Foot and Leg Pain
- Toenail Fungus Treatment
Heart & Circulation
Injections
- Immunotherapy
- Vitamin B12 Injections
Lungs & Breathing
Minor Procedures
- Burn and Wound Care
- Ingrown toenail removal
- Suture removal
Occupational Health
- DOT Physical
Office procedures
- Earwax removal
- Incision and drainage of an abscess
- Superficial foreign-body removal
Pain Management
- Joint injections
Preventive Care
- Chronic Illness Checkup
- Routine Vaccines
- Travel Vaccines And Consult
Respiratory
Senior Care
Sexual & Reproductive Health
- STD Swabs and Screening
Skin Procedures
- Cyst Removal
- Precancerous Sun Spot Freezing
- Skin Tag Removal
- Wart Removal
Sleep Health
- At-Home Sleep Study Order
Urgent Care Procedures
- Stitches and Laceration Repair
Wellness & Weight
- Weight Management Consult
Women's Health
- Hormone Replacement Therapy Consultation
Procedures Most Often Billed to Medicare
169 services · 49 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Blood glucose (sugar) test performed by hand-held instrument | Lab test | 82962 |
85 | More often than most peers in Family Practice |
| Urinalysis, manual test | Lab test | 81002 |
84 | More often than most peers in Family Practice |
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 family practices at this location 2
Same specialty, same street address — most likely the same department or group.
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.
Other family practices in Ontario 6
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Midwestern University, Chicago College of Osteopathic Med 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Midwestern University, Chicago College of Osteopathic Med 8
Providers who graduated from the same medical school in the same year.
Common questions
What is William C. Paley's specialty?
William C. Paley is a family practice in Ontario, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find William C. Paley?
William C. Paley is listed at 437 N Euclid Ave, Ontario, CA 91762. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William C. Paley?
The number on file is (909) 988-2555. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William C. Paley's NPI number?
William C. Paley's National Provider Identifier is 1124105754. 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
What is William C. Paley's education?
William C. Paley attended Midwestern University, Chicago College of Osteopathic Med, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has William C. Paley been practicing?
William C. Paley has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What is William C. Paley known for?
According to Medicare billing data, William C. Paley the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William C. Paley confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William C. Paley. If this is you, claiming it is free.
Guide.md
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