Martin Wallace Carpenter, MD
Psychiatry Physician · Cedar Rapids, IA
Martin Wallace Carpenter, MD is a psychiatry physician with a practice address in Cedar Rapids, Iowa, and NPI 1558359174, issued on Oct 7, 2005. Check the license (Iowa 35422, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Martin Wallace Carpenter
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 35422 IA
Self-reported in NPPES; status is on the state search - Practice location
- Mercy Medical Center, Cedar Rapids, IA 52403
- Phone
- (319) 369-4777
- Enumerated
- Oct 7, 2005
- Record last updated
- Aug 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (319) 369-4694
- Medicaid ID
- 36682 IA
- Medicare enrollment
- Enrolled (PECOS I20040716000213); may accept Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 398 in Iowa → Look up another NPI →
Verify Martin Wallace Carpenter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 35422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average psychiatry physician in 2024
341 Medicare Part D claims for 94 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Escitalopram Oxalate24 claims
- Bupropion Xl21 claims
- Trazodone Hcl21 claims
- Olanzapine17 claims
- Divalproex Sodium Er14 claims
- Lithium Carbonate Er14 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.
Martin Wallace Carpenter among 398 psychiatry physician records in Iowa
Martin Wallace Carpenter, MD is one of 398 psychiatry physician records with a practice address in Iowa. 66% 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, 87% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated2002 · median 2010 among the 188 with a school on file
- Record last updated2021 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Iowa
There are 398 psychiatry physician records in Iowa.
All 398 in Iowa → Every provider in Cedar Rapids → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Douglas Jones, MDCedar Rapids, IA 524031285697722
- Sundara Rameshwar Munagala Venkata, MDCedar Rapids, IA 524031225140809
- William Stutts, DO, PHDCedar Rapids, IA 524031982665816
- Frank Babcock, MDCedar Rapids, IA 524041730173766
- Mary Eyanson, MDCedar Rapids, IA 524021427018845
- Thomas Hansen, MDCedar Rapids, IA 524021689653149
- Jonathan Heinzman, MDCedar Rapids, IA 524021881154565
- Gregory Hotsenpiller, M.D.Cedar Rapids, IA 524021275655458
Common questions
What is Martin Wallace Carpenter, MD's NPI number?
Martin Wallace Carpenter, MD's National Provider Identifier (NPI) is 1558359174, issued on Oct 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Martin Wallace Carpenter, MD located?
The NPPES record lists a practice address at Mercy Medical Center, Cedar Rapids, IA, 52403. Phone: (319) 369-4777. Providers update this record themselves, so call before visiting.
How can I verify Martin Wallace Carpenter, MD's license?
NPPES lists Iowa license number 35422, 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 Martin Wallace Carpenter, MD prescribe under Medicare Part D?
In 2024, Martin Wallace Carpenter, MD had 341 Medicare Part D claims for 94 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.