Caroline Kim Kupfer, M.D.
Internal Medicine Physician · Phoenix, AZ
Caroline Kim Kupfer, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1083643480, issued on Jun 30, 2006. Check the license (Arizona 53837, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Caroline Kim Kupfer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 53837 AZ
037189 CT
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Thomas RD Ste 900A, Phoenix, AZ 85013
- Phone
- (602) 406-3540
- Enumerated
- Jun 30, 2006
- Record last updated
- Jun 20, 2023
- Fax
- (602) 406-7186
- Medicaid ID
- 001371898 CT
- Medicare enrollment
- Enrolled (PECOS I20241022005089); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 500 W Thomas RD Ste 900A
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sonal Haerter, M.D.Internal Medicine Physician1619980737
Verify Caroline Kim Kupfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 53837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,746 Medicare Part D claims for 244 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium172 claims
- Levothyroxine Sodium170 claims
- Lisinopril123 claims
- Rosuvastatin Calcium123 claims
- Omeprazole89 claims
- Amlodipine Besylate83 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 one group practice
- Salt River Pima-Maricopa Indian CommunityScottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Caroline Kim Kupfer among 2,853 internal medicine physician records in Arizona
Caroline Kim Kupfer, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2003 among the 1,643 with a school on file
- Record last updated2023 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul Benchwick, D.O.Phoenix, AZ 850131346220134
- James Blair, MDPhoenix, AZ 850131780631044
- Obinna Egbo, M.D.Phoenix, AZ 850131992768378
- Sonal Haerter, M.D.Phoenix, AZ 850131619980737
- Matthew Hemstreet, M.D.Phoenix, AZ 850131275553182
- Steve Ibrahim, D.O.Phoenix, AZ 850131174634547
- Jasmine Kelley, MDPhoenix, AZ 850131568444644
- Alexandra Lucas, M.D.Phoenix, AZ 850131801991419
Common questions
What is Caroline Kim Kupfer, M.D.'s NPI number?
Caroline Kim Kupfer, M.D.'s National Provider Identifier (NPI) is 1083643480, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Kim Kupfer, M.D. located?
The NPPES record lists a practice address at 500 W Thomas RD Ste 900A, Phoenix, AZ, 85013. Phone: (602) 406-3540. Providers update this record themselves, so call before visiting.
How can I verify Caroline Kim Kupfer, M.D.'s license?
NPPES lists Arizona license number 53837, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Caroline Kim Kupfer, M.D. prescribe under Medicare Part D?
In 2024, Caroline Kim Kupfer, M.D. had 2,746 Medicare Part D claims for 244 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.