Joanna Armstrong, PA
NPI 1639290414 · Physician Assistant · Indianapolis, IN
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Armstrong, PA is a Physician Assistant provider in Indianapolis, IN (NPI 1639290414).
Provider details
- NPI number
- 1639290414
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 10000927A (IN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,497 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 | 597 | $62 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 442 | $85 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 202 | $105 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 190 | $59 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 54 | $102 |
| Advance Care Planning, First 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Diclofenac Sodium | 39 | 20 |
| Levothyroxine Sodium | 20 | — |
| Oxycodone Hcl | 19 | 19 |
| Gabapentin | 18 | 16 |
| Cyclobenzaprine Hcl | 18 | — |
| Omeprazole | 16 | — |
| Simvastatin | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-02
- Last updated
- 2015-06-15
Frequently asked questions
- What is Joanna Armstrong's NPI number?
- Joanna Armstrong's National Provider Identifier (NPI) is 1639290414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Armstrong's specialty?
- Joanna Armstrong is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanna Armstrong located?
- Joanna Armstrong's practice location on file with NPPES is 1800 N Capitol Ave, Indianapolis, IN 46202-1218.
- What is Joanna Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Joanna Armstrong is (317) 962-2894.
- Does Joanna Armstrong accept Medicare?
- Joanna Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Armstrong's NPI active?
- Yes — Joanna Armstrong's NPI (1639290414) is active in the NPPES registry as of the last update on 2015-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.