Mark C. Henderson, M.D.
Internal Medicine Physician · Sacramento, CA
Mark C. Henderson, M.D. is an internal medicine physician with a practice address in Sacramento, California, and NPI 1184895856, issued on Mar 20, 2008. Check the license (California C50464, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark C. Henderson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C50464 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4860 Y St Ste 100, Sacramento, CA 95817
- Phone
- (916) 734-2737
- Enumerated
- Mar 20, 2008
- Record last updated
- Mar 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081202000576); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4860 Y St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michelle Dossett, M.D., PH.D., MPHInternal Medicine Physician1750556007
- Rohit Gupta, MDRheumatology Physician1306469598
- Kristopher Kordana, MDGeneral Practice Physician1457438103
- Minhvu Nguyen, MD, MSCInfectious Disease Physician1154783645
- Janet Pitcher, RN, MSN, PNPPediatric Nurse Practitioner1205811536
Verify Mark C. Henderson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50464Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
21 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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 Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark C. Henderson among 17,696 internal medicine physician records in California
Mark C. Henderson, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2008 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
601 internal medicine physician records list a practice address in Sacramento
They are 601 of the 33,083 NPPES records with a practice address in Sacramento, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sacramento → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nelson Chiang, M.D.Sacramento, CA 958171326021494
- Robert Derlet, MDSacramento, CA 958171902887433
- Lynne Do, M.D.Sacramento, CA 958171386627644
- Jason Ferries, M.D.Sacramento, CA 958171609859974
- Steven Griffen, M.D.Sacramento, CA 958171053393835
- Diane Haddock, M.D.Sacramento, CA 958171013991553
- Calvin Hirsch, MDSacramento, CA 958171073597332
- Hershan Johl, MDSacramento, CA 958171255314399
Common questions
What is Mark C. Henderson, M.D.'s NPI number?
Mark C. Henderson, M.D.'s National Provider Identifier (NPI) is 1184895856, issued on Mar 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mark C. Henderson, M.D. located?
The NPPES record lists a practice address at 4860 Y St Ste 100, Sacramento, CA, 95817. Phone: (916) 734-2737. Providers update this record themselves, so call before visiting.
How can I verify Mark C. Henderson, M.D.'s license?
NPPES lists California license number C50464, 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 Mark C. Henderson, M.D. prescribe under Medicare Part D?
In 2024, Mark C. Henderson, M.D. had 21 Medicare Part D claims; 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.