Are you Dr. Williams? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 1040 Mangrove Ave, Chico, CA 95926
About Dr. Williams
Randall S. Williams, MD practices general practice in Chico, CA. Randall is a 1986 graduate of Loma Linda University School of Medicine. According to Medicare claims data, Randall cared for 15,621 Medicare patients across 65,680 services. The services billed most often include injection, romosozumab-aqqg, 1 mg, injection, denosumab, 1 mg, and injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg. The provider's National Provider Identifier (NPI) is 1245261114.
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
- (530) 345-0064
- Email not available
Practice Locations
1040 MANGROVE AVE
Chico, CA 95926
Conditions Commonly Evaluated or Treated
Within General Practice 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
Digestive health
Rashes & allergy
Most searched conditions
Blood disorders
Bone health
Brain & Nerves
Digestive Health
Ear, Nose & Throat
Endocrine
Eye Care
Foot & Ankle
General Health
Heart & Circulation
Infections
Joint & Muscle
Lungs & Breathing
Men's Health
Mental Health
Pain
Pain & Joints
Skin
Skin & Hair
Sleep
Urinary & Kidney
Weight & Metabolism
Women's Health
Procedures & services
Diagnostic testing
- Diabetes Screening and A1C Test
- Heart monitor
- Spirometry
Heart & Circulation
Infection & Microbiology Tests
Infections & Screening
- Cholesterol Check
- COVID-19 testing
- STI Testing
- Urine Drug Screen
Injections
- Antibiotic Injection
Lab tests
- Rapid flu test
- Rapid Mono Test
- Rapid strep testing
- Urinalysis
- Vaccine Titer Test
Men's Health
Mental health
Minor Surgery
- Superficial foreign-body removal
- Incision and drainage of an abscess
- Ingrown toenail removal
- Mole removal
- Skin Tag Removal
- Wart Removal
Physical exams
Prescriptions & Medications
Routine Blood Tests
Sleep
Vaccines
- Shingles And Senior Vaccinations
- HPV vaccine
- Routine Vaccines
- Tetanus shot
- Travel vaccines
Weight & Metabolism
Women's Health
Wound Care
Most searched procedures
Dermatology
Ear, Nose & Throat
- Earwax removal
Exams & Clearances
Hormone therapy
- Hormone replacement therapy
Lungs & Breathing
Pain & Injections
Pain & Joints
Pain management
Preventive care
Preventive Care
Procedures Most Often Billed to Medicare
65,680 services · 15,621 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
2,026 | More than most peers in General Practice |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
450 | More than most peers in General Practice |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
433 | More than most peers in General Practice |
| Injection, romosozumab-aqqg, 1 mg | Drug given | J3111 |
22,051 | Too few peers to compare |
| Injection, denosumab, 1 mg | Drug given | J0897 |
12,480 | Too few peers to compare |
| Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg | Drug given | J3304 |
5,792 | Too few peers to compare |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
4,480 | Too few peers to compare |
| Injection, midazolam hydrochloride, per 1 mg | Drug given | J2250 |
863 | Too few peers to compare |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
3,721 | More than most peers in General Practice |
| Hemoglobin a1c level | Lab test | 83036 |
1,274 | More than most peers in General 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 general practitioners at this location 2
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 — 23 related providers in 4 groups
Trained at Loma Linda University School of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 1986 at Loma Linda University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 7
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Williams's specialty?
Dr. Williams is a general practitioner in Chico, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Practice”.
NPI registry
Where can I find Dr. Williams?
Dr. Williams is listed at 1040 Mangrove Ave, Chico, CA 95926. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Williams?
The number on file is (530) 345-0064. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Williams's NPI number?
Dr. Williams's National Provider Identifier is 1245261114. 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 Dr. Williams's medical education?
Dr. Williams attended Loma Linda University School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Williams been practicing?
Dr. Williams has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Williams known for?
According to Medicare billing data, Dr. Williams performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as influenza vaccine split virus, preservative free and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Williams confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williams. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.