Stefan Cadag, D.O.
Endocrinology, Diabetes & Metabolism Physician · Seal Beach, CA
Stefan Cadag, D.O. is an endocrinology, diabetes & metabolism physician with a practice address in Seal Beach, California, and NPI 1841408721, issued on May 21, 2007. Check the license (California 20A14859, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stefan Cadag
- Credential
- D.O.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 20A14859 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1198 Pacific Coast Hwy Ste 1, Seal Beach, CA 90740
- Phone
- (562) 799-7071
- Enumerated
- May 21, 2007
- Entity
- Type 1 · individual
Also registered at 1198 Pacific Coast Hwy Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kenneth Alpern, MDDermatology Physician1205830890
- Ellie Fong, PA-CPhysician Assistant1831251990
- Judy Yoo, PAMedical Physician Assistant1548902331
Verify Stefan Cadag in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.4 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,443 Medicare Part D claims for 888 beneficiaries, against an average of 2,739 among the 6,176 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Ozempic659 claims
- Metformin Hcl512 claims
- Metformin Hcl Er443 claims
- Levothyroxine Sodium429 claims
- Atorvastatin Calcium304 claims
- Alendronate Sodium292 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.
Industry payments in 2024: $1,426.32
58 payments, mostly food and beverage; the largest payer was Lilly USA, LLC. The 4,299 providers of this specialty with any payment received $6,068.67 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospital and facility affiliations
- Centers For Family Medicine GPLos Alamitos, CA
- Healthcare Partners Affiliates Medical GroupLos Alamitos, CA
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.
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 890 endocrinology, diabetes & metabolism physician records in California.
Other endocrinology, diabetes & metabolism physician records in California
- Anita Abraham, M.D.Stockton, CA1558380337
- Sallie Adams, M.D.Roseville, CA1255342085
- Ananta AddalaPalo Alto, CA1740669563
- Helen Adelberg, M.D.Encino, CA1093935447
- David Aftergood, MDBeverly Hills, CA1639259328
- Bahar Aghighi, MDSanta Cruz, CA1770562134
- Tyler Aguinaldo, MDBurlingame, CA1306811906
- Susan Ahern, D.O.Ventura, CA1508156597
- Scott Ahl, D.O.Huntington Beach, CA1558674523
- Sheila Ahmadi, MDLos Angeles, CA1194800094
Common questions
What is Stefan Cadag, D.O.'s NPI number?
Stefan Cadag, D.O.'s National Provider Identifier (NPI) is 1841408721, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stefan Cadag, D.O. located?
The NPPES record lists a practice address at 1198 Pacific Coast Hwy Ste 1, Seal Beach, CA, 90740. Phone: (562) 799-7071. Providers update this record themselves, so call before visiting.
How can I verify Stefan Cadag, D.O.'s license?
NPPES lists California license number 20A14859, 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 Stefan Cadag, D.O. prescribe under Medicare Part D?
In 2024, Stefan Cadag, D.O. had 6,443 Medicare Part D claims for 888 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,739. 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.