Doctor profile · Federal record
Dr. Ralph Armstrong, DO
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Hollister, CA
- NPI 1477526028
- Accepts Medicare
- 25 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
931 Sunset Dr
Hollister, CA 950235602
(831) 635-0604
fax (831) 665-5750
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- California #20A9256
- Medicaid
- CA #00AX92560
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477526028. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
130
Distinct HCPCS
4
Medicare allowed
$15,254
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 65 | 41 | $108 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 30 | 22 | $67 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 18 | 18 | $157 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $199 |
In context: peer comparison
Among 1 peers in Hollister Obstetrics & Gynecology Physician, average services per provider: 32. This provider delivers 4.1× the peer median.Open Payments
Industry payments received
All-time total
$172
Transactions
13
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Mayne Pharma Commercial LLC | 12 | $154.06 | |
| Hologic Sales and Service, LLC | 1 | $17.71 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
38
Patients
0
Total drug cost
$3,316
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Imvexxy (Estradiol) | Brand | 14 | 0 | $3,020 |
| Lidocaine | Generic | 13 | 0 | $131 |
| Clobetasol Propionate | Generic | 11 | 0 | $166 |
Frequently asked questions
What is Dr. Ralph Armstrong's medical specialty?
Dr. Ralph Armstrong practices Obstetrics & Gynecology Physician in Hollister, CA.
Where does Dr. Ralph Armstrong practice?
Dr. Ralph Armstrong practices at 931 Sunset Dr, Hollister, CA 950235602. Office phone: 8316350604.
What is Dr. Ralph Armstrong's NPI?
Dr. Ralph Armstrong's National Provider Identifier (NPI) is 1477526028, issued by NPPES.
Does Dr. Ralph Armstrong accept Medicare assignment?
Yes. Dr. Ralph Armstrong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ralph Armstrong commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99212); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.