Christopher J. Hupfeld, M.D.
Endocrinology, Diabetes & Metabolism Physician · Oceanside, CA
Christopher J. Hupfeld, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Oceanside, California, and NPI 1568429165, issued on Apr 27, 2006. Check the license (California A064102, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher J. Hupfeld
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A064102 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Vista Way, Oceanside, CA 92056
- Phone
- (760) 967-9569
- Enumerated
- Apr 27, 2006
- Record last updated
- Feb 3, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00A641020 CA
- Medicare enrollment
- Enrolled (PECOS I20090117000020); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 3300 Vista Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Barager, MDNephrology Physician1508864448
- Amy Matayoshi, M.D.Nephrology Physician1417921982
Verify Christopher J. Hupfeld in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A064102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,854 Medicare Part D claims for 314 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Levothyroxine Sodium338 claims
- Alendronate Sodium141 claims
- Ozempic130 claims
- Metformin Hcl Er75 claims
- Hydrocortisone62 claims
- Synthroid62 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
- Regents OF The University OF CaliforniaSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher J. Hupfeld among 1,131 endocrinology, diabetes & metabolism physician records in California
Christopher J. Hupfeld, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1996 · median 2003 among the 779 with a school on file
- Record last updated2009 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Oceanside → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Margot Aiken, MDOceanside, CA 920561952476236
- Sadaf Farasat, M.D., MPHPoway, CA 920641255696407
- Amy Chang, MDLa Jolla, CA 920371750568911
- Howard Foyt, M.D.La Jolla, CA 920371366625055
- Heather Hofflich, DOLa Jolla, CA 920371598962102
- Farahnaz Joarder, M.D.La Jolla, CA 920371205063815
- Matthew Levine, M.DLa Jolla, CA 920371801994231
- Ivan Lieberburg, PH.D., M.D.Solana Beach, CA 920751245345008
Common questions
What is Christopher J. Hupfeld, M.D.'s NPI number?
Christopher J. Hupfeld, M.D.'s National Provider Identifier (NPI) is 1568429165, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher J. Hupfeld, M.D. located?
The NPPES record lists a practice address at 3300 Vista Way, Oceanside, CA, 92056. Phone: (760) 967-9569. Providers update this record themselves, so call before visiting.
How can I verify Christopher J. Hupfeld, M.D.'s license?
NPPES lists California license number A064102, 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 Christopher J. Hupfeld, M.D. prescribe under Medicare Part D?
In 2024, Christopher J. Hupfeld, M.D. had 1,854 Medicare Part D claims for 314 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.