BetamethasoneCarpal Tunnel SyndromeDisability Evaluation
Dr. Timothy P. Armstrong, MD
NPI1871641688PAC ID1850587049
- Medicare services, 2024
- 791
- Medicare patients, 2024
- 460
- Part D claims, 2024
- 2,624
- Publications
- 2
- Hospital affiliations
- 4
- Practice address
- 2901 Squalicum Parkway, Bellingham, WA 98225
- Practice phone
- Call (360) 734-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Armstrong's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Timothy P. Armstrong is a neurologist in Bellingham, Washington
Dr. Armstrong practices at PeaceHealth St. Joseph Medical Center in Bellingham, Washington, part of PeaceHealth.
Dr. Armstrong's NPI, 1871641688, was assigned on January 8, 2007. Dr. Armstrong graduated from Pritzker School of Medicine in 1984. Dr. Armstrong holds Washington license MD60913179.
NPI and contact details
- NPI
- 1871641688NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850587049
- NPI enumeration date
- January 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (360) 734-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Timothy P. Armstrong practices at PeaceHealth St. Joseph Medical Center in Bellingham, Washington
Dr. Armstrong's primary practice is PeaceHealth St. Joseph Medical Center, at 2901 Squalicum Parkway, Bellingham, WA 98225 in Whatcom County. The practice phone is (360) 734-5400.
- PeaceHealth St. Joseph Medical Center2901 Squalicum Parkway, Bellingham, WA 98225 · Whatcom CountyPhone(360) 734-5400
Source: Dmand AI Affiliation Data
Dr. Timothy P. Armstrong is affiliated with 5 sites of care and 1 medical group
Dr. Armstrong's primary practice is PeaceHealth St. Joseph Medical Center in Bellingham, Washington, part of PeaceHealth. Dr. Armstrong is also affiliated with PeaceHealth United General Medical Center. The medical group on file is PeaceHealth Medical Group. Dmand AI also links Dr. Armstrong to 2 more hospitals and 1 group practice or clinic, each named with a free account.
PeaceHealth United General Medical CenterPeaceHealth Medical Group2 hospitalsNames with a free account1 group practice or clinicName with a free account
See all 6 affiliations for Dr. ArmstrongSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy P. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| PeaceHealth St. Joseph Medical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Armstrong practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across PeaceHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Timothy P. Armstrong is one of 417 neurologists in Washington
Neurology is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Armstrong is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Armstrong's licenses on file in 3 states: Washington, California and Alaska.
Specialties and state licenses
- Neurology, WashingtonPrimary
- California license
- Alaska license
Clinical focus
Dmand AI lists acute mini-stroke (TIA), alzheimer's disease, carpal tunnel syndrome, cerebrovascular disease, encephalopathy, epilepsy, essential tremor and fibromyalgia and chronic pain among the conditions Dr. Armstrong treats.
Neurologists near Dr. Armstrong
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
417neurologists in Washington
9neurologists in Bellingham
7neurologists at PeaceHealth St. Joseph Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Timothy P. Armstrong billed Medicare for 791 services in 2024
CMS data shows 791 Medicare services from Dr. Armstrong across 11 procedure codes in 2024, for 460 Medicare patients. Medicare paid $52,998 for them. Every service was in an office.
Medicare services, 2024791
Medicare patients460
Paid by Medicare$52,998
Procedure codes11
Dr. Armstrong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5002024: 5194%
- Tests and treatments
- 2023: 2552024: 2727%
Dr. Armstrong compared with the Washington median for neurologists, 2024
- Dr. Armstrong
- Washington median
- Medicare services
- 791vs 2922.7 times
- Medicare patients
- 460vs 1642.8 times
- Part D claims
- 2,375vs 4085.8 times
Medians across 403 neurologists in Washington with Dmand AI profiles that report each measure.
Dr. Armstrong's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Armstrong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Armstrong and other neurologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Timothy P. Armstrong treated 460 Medicare patients in 2024, average age 74
CMS counts 460 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 75 to 84, with 202 patients. 67% of them have high cholesterol, and 64% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Armstrong's median patient age at 75, with 52% women.
Medicare patients, 2024460
Average age74
Average risk score1.28
Also on Medicaid12%
Dr. Armstrong's Medicare patients by age, 2024
Dr. Armstrong's Medicare patients by sex, 2024
- Women24052%
- Men22048%
Chronic conditions among Dr. Armstrong's Medicare patients, 2024
- High cholesterol67%
- High blood pressure64%
- Arthritis51%
- Ischemic heart disease28%
- Mood disorders28%
- Anxiety23%
- Depression23%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Armstrong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Timothy P. Armstrong wrote 2,624 Medicare Part D claims in 2024
In 2024, Dr. Armstrong wrote 2,624 Medicare Part D claims for 468 patients. 97% of them were for generic drugs. CMS names the drug for 2,375 of them, across 48 drugs with 11 or more claims each, at $133,026 in total drug cost. In 2023, CMS named 1,659 claims across 38 drugs.
Part D claims, 20242,624
Drugs named by CMS48
Total drug cost$133,026
Part D patients468
Dr. Armstrong's Part D claims by kind of drug, 2024
- Generic2,550 claims97%
- Brand-name74 claims3%
Dr. Armstrong's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Armstrong's Part D claims, 2024
- Opioids1%27 of 2,624 claims
- Antipsychotics, patients 65 and over1%33 of 2,624 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6592024: 2,37543%
Drugs named by CMS: 48 in 2024, 38 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Timothy P. Armstrong offers telehealth to Medicare patients
Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Armstrong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find neurologists like Dr. Armstrong by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Timothy P. Armstrong has 2 publications on record
Dmand AI links 2 papers to Dr. Armstrong. Dr. Armstrong's most frequent co-authors are William N. Devor, MD and Eliezer Masliah, MD.
Papers2
Dr. Armstrong's most frequent co-authors
- William N. Devor, MD1 shared paper
- Eliezer Masliah, MD1 shared paper
Recent publications by Dr. Armstrong
Alzheimer DiseaseBrainBrain Stem
See who Dr. Armstrong researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Armstrong works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Timothy P. Armstrong received $35 in industry payments from 2019 to 2025
CMS Open Payments shows 2 general payments to Dr. Armstrong from 2 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 57% of the total. GE Healthcare paid the most, $20.
General payments to Dr. Armstrong by program year, 2019 to 2025
General payments to Dr. Armstrong by kind, 2019 to 2025
$35in total
- Food and beverage$2057%
- Education$1543%
Companies that paid Dr. Armstrong the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Timothy P. Armstrong has 1 award and honors on record
Dmand AI lists 1 award for Dr. Armstrong, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Armstrong
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Timothy P. Armstrong graduated from Pritzker School of Medicine
Dr. Armstrong graduated from Pritzker School of Medicine in 1984.
- Medical school
- Board certified in internal medicine
- Board certified in neurology
Source: Dmand AI Professional Profile Data
Dr. Timothy P. Armstrong accepts plans from 17 insurance carriers
Dr. Armstrong is in network with 17 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- HCSC
- Humana
- Kaiser Permanente
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. Armstrong accepts, by number of carriers
- PPO11
- HMO10
- Medicare10
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Timothy P. Armstrong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Timothy P. Armstrong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Timothy P. Armstrong's NPI number?
Dr. Timothy P. Armstrong's NPI number is 1871641688. It was assigned on January 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy P. Armstrong?
Dr. Timothy P. Armstrong is a neurologist in Bellingham, Washington. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Timothy P. Armstrong practice?
Dr. Armstrong practices at 2901 Squalicum Parkway, Bellingham, WA 98225. Dr. Armstrong's primary practice is PeaceHealth St. Joseph Medical Center in Bellingham, Washington, part of PeaceHealth. Dmand AI also links Dr. Armstrong to 2 hospitals and 1 group practice or clinic.
What is Dr. Timothy P. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (360) 734-5400.
What is Dr. Timothy P. Armstrong's medical license number?
Dr. Armstrong holds Washington license MD60913179, one of the licenses on file in 3 states.
Which states has Dr. Timothy P. Armstrong been licensed in?
Dmand AI has state licenses on file for Dr. Armstrong in Washington (2019 to 2026), California (1985 to 2027) and Alaska (2019 to 2026).
Which hospitals is Dr. Timothy P. Armstrong affiliated with?
Dr. Armstrong practices at PeaceHealth St. Joseph Medical Center in Bellingham, Washington. Dr. Armstrong is also affiliated with PeaceHealth United General Medical Center. Dmand AI links Dr. Armstrong to 2 more hospitals.
What medical group is Dr. Timothy P. Armstrong part of?
Dr. Armstrong is linked to PeaceHealth Medical Group.
Does Dr. Timothy P. Armstrong accept Medicare?
Yes. CMS data shows Dr. Armstrong billed Medicare for 791 services in 2024, and Dr. Armstrong accepts Medicare assignment.
Does Dr. Timothy P. Armstrong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Armstrong as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Timothy P. Armstrong see?
CMS counts 460 Medicare patients who saw Dr. Armstrong in 2024, with an average age of 74.
Is Dr. Timothy P. Armstrong board certified?
Yes. Dr. Armstrong is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Timothy P. Armstrong bill to Medicare?
In 2024, Dr. Armstrong's most billed Medicare services were nerve and brain test (95886), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Timothy P. Armstrong go to medical school?
Dr. Armstrong graduated from Pritzker School of Medicine in 1984.
What drugs does Dr. Timothy P. Armstrong prescribe most?
In 2024 Medicare Part D data, Dr. Armstrong's most prescribed drugs by claims were Carbidopa-Levodopa, Carbidopa-Levodopa ER and Levetiracetam.
Has Dr. Timothy P. Armstrong received payments from drug or device companies?
CMS Open Payments shows $35 in general payments to Dr. Armstrong from 2 companies from 2019 to 2025. The largest total came from GE Healthcare.
How long has Dr. Timothy P. Armstrong been practicing?
Dr. Armstrong graduated from medical school in 1984, 42 years ago.
Does Dr. Timothy P. Armstrong do research?
Dmand AI links 2 publications to Dr. Armstrong.
Who does Dr. Timothy P. Armstrong publish with?
Dr. Armstrong's most frequent co-authors are William N. Devor, MD (1 shared paper) and Eliezer Masliah, MD (1 shared paper).
What insurance does Dr. Timothy P. Armstrong accept?
Dr. Armstrong is in network with 17 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
Selling to neurology practices?
See neurologists in Washington by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card