Samantha Armstrong, MD
NPI 1689053761 · Hematology & Oncology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samantha Armstrong, MD is a Hematology & Oncology Physician provider in Indianapolis, IN (NPI 1689053761).
Provider details
- NPI number
- 1689053761
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 01085460A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
360 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 186 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 98 | $61 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 28 | $167 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $133 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 23 | $70 |
Typical Medicare-allowed amounts for these services range $61–$167 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Imatinib Mesylate | 48 |
| Sorafenib Tosylatebrand: Sorafenib | 37 |
| Prochlorperazine Maleate | 29 |
| Sunitinib Malate | 29 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 24 |
| Nortriptyline Hcl | 18 |
| Ondansetronbrand: Ondansetron Odt | 14 |
| Oxycodone Hcl | 14 |
| Potassium Chloride | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$135 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 535 Barnhill DrIndianapolis, IN 46202-5116Phone: (317) 944-0920
- 1701 N Senate BlvdIndianapolis, IN 46202-1239Phone: (888) 484-3258
Registry dates
- Enumerated
- 2015-05-22
- Last updated
- 2025-02-26
- Certified
- 2025-02-26
Frequently asked questions
- What is Samantha Armstrong's NPI number?
- Samantha Armstrong's National Provider Identifier (NPI) is 1689053761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samantha Armstrong's specialty?
- Samantha Armstrong is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Samantha Armstrong located?
- Samantha Armstrong's practice location on file with NPPES is 1120 W Michigan St, Indianapolis, IN 46202-5209.
- What is Samantha Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Samantha Armstrong is (317) 278-2686.
- Does Samantha Armstrong accept Medicare?
- Samantha Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samantha Armstrong's NPI active?
- Yes — Samantha Armstrong's NPI (1689053761) is active in the NPPES registry as of the last update on 2025-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.