John Tharnstrom, PA
NPI 1467541227 · Emergency Medicine Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Tharnstrom, PA is a Emergency Medicine Physician provider in Naperville, IL (NPI 1467541227).
Provider details
- NPI number
- 1467541227
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 085-002044 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
345 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 112 | $79 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $112 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 42 | $98 |
| Respiratory Infectious Agent Detection By Rna for Severe Acute Respiratory Syndrome Coronavirus 2 (covid 19), Influenza A, Influenza B, and Respiratory Syncytial Virus, Upper Respiratory Specimen, Each Reported As Detected Or Not Detected0241U | 31 | $140 |
| Automated Urinalysis Test81003 | 25 | $2 |
| Insertion of Needle Into Vein for Collection of Blood Sample |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 38 | 38 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 23 | 23 |
| Amoxicillin | 22 | 22 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 18 | 18 |
| Azithromycin | 13 | 13 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | 11 |
| Hydrocortisone | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2023-07-28
- Certified
- 2023-07-28
Frequently asked questions
- What is John Tharnstrom's NPI number?
- John Tharnstrom's National Provider Identifier (NPI) is 1467541227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tharnstrom's specialty?
- John Tharnstrom is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Tharnstrom located?
- John Tharnstrom's practice location on file with NPPES is 808 Rickert Dr Ste 103, Naperville, IL 60540-0908.
- What is John Tharnstrom's phone number?
- The practice phone number listed in the NPPES registry for John Tharnstrom is (331) 551-5854.
- Does John Tharnstrom accept Medicare?
- John Tharnstrom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Tharnstrom's NPI active?
- Yes — John Tharnstrom's NPI (1467541227) is active in the NPPES registry as of the last update on 2023-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.