Registry data as of Aug 27, 2026

Carl Constantine, M.D.

Internal Medicine Physician · Santa Paula, CA

Carl Constantine, M.D. is an internal medicine physician with a practice address in Santa Paula, California, and NPI 1669586293, issued on Aug 19, 2006. Check the license (California G68370, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1669586293
Name
Carl Constantine
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
G68370 CA
Self-reported in NPPES; status is on the state search
Practice location
825 N 10TH St, Santa Paula, CA 93060
Phone
(805) 647-0880
Enumerated
Aug 19, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 825 N 10TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michelle Azimov, M.D.Internal Medicine Physician1831293273
  2. Nathan Carroll, M.D.Family Medicine Physician1821318684
  3. Andrea Gonzales, M.D.Emergency Medicine Physician1659313534
  4. Jordana Kaban, DOEmergency Medicine Physician1457511917
  5. Yasha Long, MD.Emergency Medicine Physician1265745871
  6. Jerold Noah, M.D.Family Medicine Physician1073680336

Verify Carl Constantine in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G68370
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

96% fewer Medicare Part D claims than the average internal medicine physician in 2024

111 Medicare Part D claims for 20 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D.

  1. Carl Constantine111
  2. Specialty average2,785

Most prescribed

  1. Losartan Potassium12 claims
  2. Omeprazole12 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.

One hospital or facility affiliation

  1. Mahaska County HospitalOskaloosa, IA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

10 internal medicine physician records list a Santa Paula practice address

They are 10 of the 366 NPPES records with a Santa Paula practice address, and 20,403 internal medicine physician records in California.

Other internal medicine physician records in California

  1. Jacob Aaron, MDSan Francisco, CA1407202518
  2. Alistair Aaronson, MDStanford, CA1457628760
  3. Jose Abad., MDSacramento, CA1144607219
  4. Donna Abare, MDOakland, CA1386722155
  5. Marce AbareScotts Valley, CA1457744708
  6. Samuel Abarte, M.D.Chula Vista, CA1578535498
  7. Alexander Abary, MDLong Beach, CA1104995919
  8. Luba Abascal, MDSan Francisco, CA1023180874
  9. Michael Abate, MDSacramento, CA1548248131
  10. Wali Abawi, D.O.Joshua Tree, CA1104362268

Common questions

What is Carl Constantine, M.D.'s NPI number?

Carl Constantine, M.D.'s National Provider Identifier (NPI) is 1669586293, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Carl Constantine, M.D. located?

The NPPES record lists a practice address at 825 N 10TH St, Santa Paula, CA, 93060. Phone: (805) 647-0880. Providers update this record themselves, so call before visiting.

How can I verify Carl Constantine, M.D.'s license?

NPPES lists California license number G68370, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Carl Constantine, M.D. prescribe under Medicare Part D?

In 2024, Carl Constantine, M.D. had 111 Medicare Part D claims for 20 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.