Physician Profile
Unclaimed ProfileAbout ARMSTRONG
Ralph Bernard Armstrong, DO practices obstetrics/gynecology in Hollister, CA. Ralph is also listed as specializing in obstetrics & gynecology. According to Medicare claims data, Ralph cared for 106 Medicare patients across 145 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Armstrong's specialty?
Dr. Armstrong is an obstetrics/gynecology in Hollister, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OBSTETRICS/GYNECOLOGY”.
NPI registry
Where can I find Dr. Armstrong?
Dr. Armstrong is listed at 931 SUNSET DR, Hollister, CA 95023. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Armstrong?
The number on file is (831) 635-0604. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Armstrong's NPI number?
Dr. Armstrong's National Provider Identifier is 1477526028. 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. Armstrong's medical education?
Dr. Armstrong attended Other, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Armstrong been practicing?
Dr. Armstrong has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Armstrong known for?
According to Medicare billing data, Dr. Armstrong 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 Dr. Armstrong confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Armstrong. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (831) 635-0604
- Email not available
Practice Locations
931 SUNSET DR
Hollister, CA 95023
Procedures Most Often Billed to Medicare
145 services · 106 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
82 |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
26 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
19 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other obstetrics/gynecology specialists in Hollister 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at Other 7
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.