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Physician Profile

William K. Armstrong, MD

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At a glance

About Dr. Armstrong

William K. Armstrong, MD practices family medicine in Newport Beach, CA. According to Medicare claims data, William cared for 863 Medicare patients across 1,063 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and administration of pneumococcal vaccine. The provider's National Provider Identifier (NPI) is 1902133424.

Factual summary compiled by Guide.md from public records; not written by this provider.

Education & Training

Medical School Other Graduated: 2007

Specialty

Family Medicine (Primary)

Credentials & Licensing

CA · Physician and Surgeon AMedical Board of California
No. 108913CurrentExpires Nov 2028Since 2009
NPINational Provider Identifier
1902133424Issued 2009

Snapshot · verify with the board ↗

Medicare information

Accepts Medicare assignmentYes
Telehealth reported to CMSYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What kind of doctor is Dr. Armstrong?

Dr. Armstrong is a family doctor in Newport Beach, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.

NPI registry

What is Dr. Armstrong's address?

Dr. Armstrong is listed at 520 Superior Ave Suite 360, Newport Beach, CA 92663. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Dr. Armstrong?

The number on file is (949) 644-1025. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Armstrong's NPI number?

Dr. Armstrong's National Provider Identifier is 1902133424. 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 Dr. Armstrong train?

Dr. Armstrong attended Other, graduating in 2007. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. Armstrong been practicing?

Dr. Armstrong has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.

CMS public data

What procedures does Dr. Armstrong perform?

According to Medicare billing data, Dr. Armstrong provides treatments such as pneumococcal conjugate vaccine, 20 valent , for intramuscular use and influenza vaccine, inactivated, alongside routine visits and testing. 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

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