Derek Robert Blechinger, M.D.
Internal Medicine Physician · San Francisco, CA
Derek Robert Blechinger, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1063839462, issued on Mar 24, 2014. Check the license (California 137927, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Derek Robert Blechinger
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 137927 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4141 Geary Blvd, San Francisco, CA 94118
- Phone
- (415) 833-4414
- Enumerated
- Mar 24, 2014
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20190801001504); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2014
- Entity
- Type 1 · individual
Also registered at 4141 Geary Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Audrey AdelsonClinical Social Worker1578600409
- Mark Alessandroni, LCSWMental Health Counselor1467504761
- Ellin Becker, M.S., CCC-AAudiologist1144343534
- Teresa Benezra, L.AC.,Acupuncturist1790847838
- Robin Bertoli, LCSWClinical Social Worker1861555682
- Lourdes Betancourt, L.C.S.WClinical Social Worker1407974439
Verify Derek Robert Blechinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 137927Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average internal medicine physician in 2024
3,302 Medicare Part D claims for 287 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium271 claims
- Lisinopril168 claims
- Amlodipine Besylate165 claims
- Acyclovir91 claims
- Levothyroxine Sodium85 claims
- Terazosin Hcl84 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
- Permanente Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 1,318 in San Francisco → All 17,696 in California → Every provider in San Francisco →
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- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
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Common questions
What is Derek Robert Blechinger, M.D.'s NPI number?
Derek Robert Blechinger, M.D.'s National Provider Identifier (NPI) is 1063839462, issued on Mar 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Derek Robert Blechinger, M.D. located?
The NPPES record lists a practice address at 4141 Geary Blvd, San Francisco, CA, 94118. Phone: (415) 833-4414. Providers update this record themselves, so call before visiting.
How can I verify Derek Robert Blechinger, M.D.'s license?
NPPES lists California license number 137927, 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 Derek Robert Blechinger, M.D. prescribe under Medicare Part D?
In 2024, Derek Robert Blechinger, M.D. had 3,302 Medicare Part D claims for 287 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.