Sierra C. Armstrong, FNP
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 634
- MIPS score, 2024
- 96
- Hospital affiliations
- 1
- Industry payments
- $97
- Practice address
- 2170 South Avenue, South Lake Tahoe, CA 96150
- Practice phone
- Call (530) 541-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Sierra 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.
Sierra C. Armstrong is a nurse practitioner in South Lake Tahoe, California
Sierra Armstrong practices at Barton Memorial Hospital in South Lake Tahoe, California, part of Barton Health.
Sierra Armstrong's NPI, 1417442419, was assigned on June 22, 2018. Sierra Armstrong holds California license 95008336.
- NPI
- 1417442419NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547500670
- NPI enumeration date
- June 22, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 541-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Sierra C. Armstrong practices at Barton Memorial Hospital in South Lake Tahoe, California
Sierra Armstrong's primary practice is Barton Memorial Hospital, at 2170 South Avenue, South Lake Tahoe, CA 96150 in El Dorado County. The practice phone is (530) 541-3000.
- Barton Memorial Hospital2170 South Avenue, South Lake Tahoe, CA 96150 · El Dorado CountyPhone(530) 541-3000
Source: Dmand AI Affiliation Data
Sierra C. Armstrong is affiliated with 3 sites of care and 2 medical groups
Sierra Armstrong's primary practice is Barton Memorial Hospital in South Lake Tahoe, California, part of Barton Health. The medical group on file is Barton Memorial Hospital. Dmand AI also links Sierra Armstrong to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sierra C. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sierra Armstrong practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barton Memorial Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Barton Health and 6.2K+ hospitals, with verified contacts in the same login.
Sierra C. Armstrong is one of 5,983 nurse practitioners in California
Nurse practitioner is Sierra Armstrong's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Sierra Armstrong is licensed in California.
Specialties and state licenses
- Nurse practitioner, CaliforniaPrimary
Nurse practitioners near Sierra Armstrong
Counts of nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Sierra C. Armstrong treated 21 Medicare patients in 2024, average age 64
CMS counts 21 Medicare patients who saw Sierra Armstrong in 2024. 75% of them have anxiety, and 75% have mood disorders. Their average risk score is 1.41, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Sierra Armstrong's median patient age at 64, with 43% women.
Chronic conditions among Sierra Armstrong's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- Arthritis67%
- Depression67%
- High cholesterol62%
- High blood pressure52%
Share of Medicare patients with each condition. A patient can have several.
Sierra 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 64
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Sierra C. Armstrong wrote 634 Medicare Part D claims in 2024
In 2024, Sierra Armstrong wrote 634 Medicare Part D claims for 39 patients. 95% of them were for generic drugs.
Sierra Armstrong's Part D claims by kind of drug, 2024
- Generic604 claims95%
- Brand-name30 claims5%
Drug classes CMS tracks in Sierra Armstrong's Part D claims, 2024
- Antipsychotics, patients 65 and over3%17 of 634 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Sierra C. Armstrong scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Sierra Armstrong for performance year 2024, reported through an alternative payment model (APM). Sierra Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Sierra Armstrong's MIPS scores, performance year 2024
- 96of 100Final score
- 89.9of 100Quality
- 94of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Sierra C. Armstrong received $97 in industry payments in 2025
CMS Open Payments shows 4 general payments to Sierra Armstrong from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. ITI, Inc. paid the most, $45.
Companies that paid Sierra Armstrong the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Sierra C. 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 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 (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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Sierra C. 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 Sierra C. Armstrong's NPI number?
Sierra C. Armstrong's NPI number is 1417442419. It was assigned on June 22, 2018, and it is active in the NPI Registry.
What does Sierra C. Armstrong specialize in?
Sierra C. Armstrong is a nurse practitioner in South Lake Tahoe, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Sierra C. Armstrong practice?
Sierra Armstrong practices at 2170 South Avenue, South Lake Tahoe, CA 96150. Sierra Armstrong's primary practice is Barton Memorial Hospital in South Lake Tahoe, California, part of Barton Health. Dmand AI also links Sierra Armstrong to 2 group practices and clinics and 1 medical group.
What is Sierra C. Armstrong's office phone number?
The practice phone on file for Sierra Armstrong is (530) 541-3000.
What is Sierra C. Armstrong's medical license number?
Sierra Armstrong holds California license 95008336.
Which hospitals is Sierra C. Armstrong affiliated with?
Sierra Armstrong practices at Barton Memorial Hospital in South Lake Tahoe, California.
What medical group is Sierra C. Armstrong part of?
Sierra Armstrong is linked to Barton Memorial Hospital. Dmand AI links Sierra Armstrong to 1 more medical group.
Does Sierra C. Armstrong accept Medicare?
Yes. CMS lists Sierra Armstrong as accepting Medicare assignment.
What is Sierra C. Armstrong's MIPS score?
Sierra Armstrong's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Sierra C. Armstrong see?
CMS counts 21 Medicare patients who saw Sierra Armstrong in 2024, with an average age of 64.
Has Sierra C. Armstrong received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to Sierra Armstrong from 3 companies from 2025 to 2025. The largest total came from ITI, Inc.
How long has Sierra C. Armstrong been practicing?
Sierra Armstrong graduated from medical school in 2016, 10 years ago.
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