Physician Profile
Richard A. Williams, M.D.
Unclaimed ProfileAbout Dr. Williams
Richard A. Williams, M.D. is a specialist based in San Dimas, CA. According to Medicare claims data, Richard cared for 174 Medicare patients across 202 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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) 599-8677
- Email not available
Practice Locations
1334 W COVINA BLVD STE 102
San Dimas, CA 91773
Procedures Most Often Billed to Medicare
202 services · 174 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
65 | As often as other peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
39 | Less often than most peers in Specialist |
| Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | Billing code | Q0091 |
37 | As often as other peers in Specialist |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
31 | Less often than most peers in Specialist |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
30 | As often as other peers in Specialist |
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 specialists at this location 1
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 specialists in San Dimas 3
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Richard A. Williams specialize in?
Richard A. Williams is a specialist in San Dimas, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Richard A. Williams located?
Richard A. Williams is listed at 1334 W Covina Blvd Ste 102, San Dimas, CA 91773. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Richard A. Williams's phone number?
The number on file is (909) 599-8677. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Richard A. Williams's NPI number?
Richard A. Williams's National Provider Identifier is 1467457390. 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 Richard A. Williams train?
Richard A. Williams attended Other, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Richard A. Williams been practicing?
Richard A. Williams has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What does Richard A. Williams do most often?
According to Medicare billing data, Richard A. Williams 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 Richard A. Williams confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Richard A. Williams. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.