John Carstensen, MD
NPI 1851378012 · Internal Medicine Physician · Des Moines, IA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Carstensen, MD is a Internal Medicine Physician provider in Des Moines, IA (NPI 1851378012).
Provider details
- NPI number
- 1851378012
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34214 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
3,514 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 565 | $58 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 554 | $117 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 514 | $9 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 386 | $42 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 302 | $15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 160 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 664 | 180 |
| Amlodipine Besylate | 297 | 80 |
| Levothyroxine Sodium | 277 | 72 |
| Losartan Potassium | 262 | 73 |
| Omeprazole | 199 | 52 |
| Lisinopril | 186 | 47 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-29
- Last updated
- 2012-03-01
Frequently asked questions
- What is John Carstensen's NPI number?
- John Carstensen's National Provider Identifier (NPI) is 1851378012, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Carstensen's specialty?
- John Carstensen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Carstensen located?
- John Carstensen's practice location on file with NPPES is 1221 Pleasant St, Des Moines, IA 50309-1423.
- What is John Carstensen's phone number?
- The practice phone number listed in the NPPES registry for John Carstensen is (515) 241-8221.
- Does John Carstensen accept Medicare?
- John Carstensen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Carstensen's NPI active?
- Yes — John Carstensen's NPI (1851378012) is active in the NPPES registry as of the last update on 2012-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.