Doctor profile · Federal record
Dr. Richard Williams, M.D.
Specialist (CMS: Obstetrics/Gynecology) · San Dimas, CA
- NPI 1467457390
- Accepts Medicare
- 46 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1334 W Covina Blvd, Ste 102
San Dimas, CA 917733211
(909) 599-8677
fax (909) 592-0999
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- November 8, 2011
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- California #A40188
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1467457390. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
220
Distinct HCPCS
5
Medicare allowed
$20,059
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 47 | 41 | $99 | |
Q0091 |
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 47 | 47 | $49 | |
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 46 | 46 | $43 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 42 | 30 | $139 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 38 | 38 | $140 |
In context: peer comparison
Among 2 peers in San Dimas Specialist, average services per provider: 77. This provider delivers 2.9× the peer median.Open Payments
Industry payments received
All-time total
$124
Transactions
8
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk INC | 2 | $31.03 | |
| Abbvie INC. | 1 | $25.67 | |
| Hologic Sales and Service, LLC | 1 | $24.94 | |
| Pfizer INC. | 1 | $18.88 | |
| Millicent US INC | 1 | $13.35 | |
| Mayne Pharma Commercial LLC | 2 | $9.71 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
460
Patients
145
Total drug cost
$58,964
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Estradiol | Generic | 188 | 78 | $19,808 |
| Estring (Estradiol) | Brand | 40 | 21 | $21,386 |
| Triamcinolone Acetonide | Generic | 34 | 24 | $189 |
| Progesterone (Progesterone, Micronized) | Brand | 27 | 0 | $2,608 |
| Imvexxy (Estradiol) | Brand | 24 | 0 | $5,838 |
| Medroxyprogesterone Acetate | Generic | 22 | 0 | $392 |
| Yuvafem (Estradiol) | Brand | 21 | 0 | $4,589 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 16 | 0 | $715 |
| Acyclovir | Generic | 13 | 0 | $122 |
| Divigel (Estradiol) | Brand | 13 | 0 | $2,352 |
Frequently asked questions
What is Dr. Richard Williams's medical specialty?
Dr. Richard Williams practices Specialist in San Dimas, CA.
Where does Dr. Richard Williams practice?
Dr. Richard Williams practices at 1334 W Covina Blvd, San Dimas, CA 917733211. Office phone: 9095998677.
What is Dr. Richard Williams's NPI?
Dr. Richard Williams's National Provider Identifier (NPI) is 1467457390, issued by NPPES.
Does Dr. Richard Williams accept Medicare assignment?
Yes. Dr. Richard Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Richard Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (HCPCS Q0091); Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101). Source: CMS Medicare Physician & Other Practitioners file.