John A. Carstensen, MD
Internal Medicine Physician · Des Moines, IA
John A. Carstensen, MD is an internal medicine physician with a practice address in Des Moines, Iowa, and NPI 1851378012, issued on Dec 29, 2005. Check the license (Iowa 34214, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John A. Carstensen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 34214 IA
ME105681 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Pleasant St, Des Moines, IA 50309
- Phone
- (515) 241-8221
- Enumerated
- Dec 29, 2005
- Record last updated
- Mar 1, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (515) 241-4001
- Medicaid IDs
- 1851378012 IA
0291468 IA
001716300 FL - Medicare enrollment
- Enrolled (PECOS I20120223000782); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 1221 Pleasant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John A. Carstensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 34214Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average internal medicine physician in 2024
9,232 Medicare Part D claims for 667 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 466 claims were for opioids.
Most prescribed
- Atorvastatin Calcium664 claims
- Amlodipine Besylate297 claims
- Levothyroxine Sodium277 claims
- Losartan Potassium262 claims
- Omeprazole199 claims
- Lisinopril186 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Iowa Physicians Clinic Medical FoundationDes Moines, IA
- Tidd-Krafft Occupational And Physical Therapy PAAnkeny, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John A. Carstensen among 871 internal medicine physician records in Iowa
John A. Carstensen, MD is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2000 · median 2008 among the 386 with a school on file
- Record last updated2012 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
226 internal medicine physician records list a practice address in Des Moines
They are 226 of the 5,538 NPPES records with a practice address in Des Moines, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Des Moines → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Bunge, MDDes Moines, IA 503091568460012
- Christopher Covert, DODes Moines, IA 503091891772968
- Steven Craig, MDDes Moines, IA 503091316924491
- Sean Cunningham, M.D.Des Moines, IA 503091023001559
- Carole Frier, D.O.Des Moines, IA 503091730151374
- Richard Gloor, M.D.Des Moines, IA 503091770577769
- Todd Jensen, M.D.Des Moines, IA 503091952396616
- Cynthia Juhler, D.O.Des Moines, IA 503091649279522
Common questions
What is John A. Carstensen, MD's NPI number?
John A. Carstensen, MD's National Provider Identifier (NPI) is 1851378012, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John A. Carstensen, MD located?
The NPPES record lists a practice address at 1221 Pleasant St, Des Moines, IA, 50309. Phone: (515) 241-8221. Providers update this record themselves, so call before visiting.
How can I verify John A. Carstensen, MD's license?
NPPES lists Iowa license number 34214, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John A. Carstensen, MD prescribe under Medicare Part D?
In 2024, John A. Carstensen, MD had 9,232 Medicare Part D claims for 667 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.