What is Andrew Armstrong's NPI number?

Andrew Armstrong's National Provider Identifier (NPI) is 1023500568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Andrew Armstrong's specialty?

Andrew Armstrong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Andrew Armstrong located?

Andrew Armstrong's practice location on file with NPPES is 1046 6th Ave Sw, Albany, OR 97321-1916.

What is Andrew Armstrong's phone number?

The practice phone number listed in the NPPES registry for Andrew Armstrong is (541) 812-4000.

Does Andrew Armstrong accept Medicare?

Andrew Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Andrew Armstrong's NPI active?

Yes — Andrew Armstrong's NPI (1023500568) is active in the NPPES registry as of the last update on 2022-01-17.

IndividualActiveAccepts Medicare

Andrew Armstrong, MD

NPI 1023500568 · Internal Medicine Physician · Albany, OR

Andrew Armstrong, MD is a Internal Medicine Physician provider in Albany, OR (NPI 1023500568).

Provider details

NPI number: 1023500568
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MD206180 (OR)

Practice location

1046 6th Ave Sw

Albany, OR 97321-1916

Phone: (541) 812-4000

Street-level locationGet directions

More OR providers

Mailing address

Po Box 1188

Corvallis, OR 97339-1188

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense MD206180 (OR)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000XLicense PG188172 (OR)
Student, Health Care

Additional practice locations (1)

5050 Ne Hoyt St Ste 540
Portland, OR 97213-2985
Phone: (503) 215-6600

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(56/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
8 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
291 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	103	$75
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	66	$111
Hospital Discharge Day Management, More Than 30 Minutes99239	60	$108
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	39	$166
Critical Care, First 30-74 Minutes99291	23	$202

Typical Medicare-allowed amounts for these services range $75–$202 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Metoprolol Succinate	19	14
Losartan Potassium	18	—
Atorvastatin Calcium	18	—
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	16	14
Furosemide	15	—
Amlodipine Besylate	14	—
Potassium Chloride	14

Enumerated: 2018-05-31
Last updated: 2022-01-17
Certified: 2022-01-17

Frequently asked questions

What is Andrew Armstrong's NPI number?: Andrew Armstrong's National Provider Identifier (NPI) is 1023500568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Andrew Armstrong's specialty?: Andrew Armstrong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Andrew Armstrong located?: Andrew Armstrong's practice location on file with NPPES is 1046 6th Ave Sw, Albany, OR 97321-1916.
What is Andrew Armstrong's phone number?: The practice phone number listed in the NPPES registry for Andrew Armstrong is (541) 812-4000.
Does Andrew Armstrong accept Medicare?: Andrew Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Andrew Armstrong's NPI active?: Yes — Andrew Armstrong's NPI (1023500568) is active in the NPPES registry as of the last update on 2022-01-17.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	103	$75
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	66	$111
Hospital Discharge Day Management, More Than 30 Minutes99239	60	$108
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	39	$166
Critical Care, First 30-74 Minutes99291	23	$202

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Metoprolol Succinate	19	14
Losartan Potassium	18	—
Atorvastatin Calcium	18	—
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	16	14
Furosemide	15	—
Amlodipine Besylate	14	—
Potassium Chloride	14

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)