Karen Elizabeth Mark, M.D. MPH
Infectious Disease Physician · Sacramento, CA
Karen Elizabeth Mark, M.D. MPH is an infectious disease physician with a practice address in Sacramento, California, and NPI 1750491122, issued on Aug 30, 2006. Check the license (California A71951, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Elizabeth Mark
- Credential
- M.D. MPH
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A71951 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 21St St, Sacramento, CA 95811
- Phone
- (916) 443-3299
- Enumerated
- Aug 30, 2006
- Record last updated
- Nov 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 8475741 WA
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 1500 21St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley AbrahamFamily Medicine Physician1609482967
- Annie Adams-Roselle, LCSWClinical Social Worker1255735874
- Carmen Aguilar, LCSWClinical Social Worker1851637466
- Celeste ArmsteadSocial Worker1043728256
- Simone Atsina, M.D.Family Medicine Physician1831545185
- James Austin, NPFamily Nurse Practitioner1699060475
Verify Karen Elizabeth Mark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71951Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average infectious disease physician in 2024
691 Medicare Part D claims for 136 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Biktarvy52 claims
- Lisinopril47 claims
- Atorvastatin Calcium36 claims
- Albuterol Sulfate Hfa35 claims
- Shingrix27 claims
- Genvoya26 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.
Karen Elizabeth Mark among 1,119 infectious disease physician records in California
Karen Elizabeth Mark, M.D. MPH is one of 1,119 infectious disease 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Sacramento → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Karishma Chawla, M.D.Sacramento, CA 958111295150852
- Malik DarwishSacramento, CA 958111093206658
- Kristin Mills, DOSacramento, CA 958111851602536
- Philip Peters, M.D.Sacramento, CA 958111417102427
- Alexandra Santiago-VazquezSacramento, CA 958111053623520
- Mark Swancutt, MD PHDSacramento, CA 958111346280211
- Michael Farber, M.D.Sacramento, CA 958141407087737
- Tracy Lumsden, PASacramento, CA 958141407817570
Common questions
What is Karen Elizabeth Mark, M.D. MPH's NPI number?
Karen Elizabeth Mark, M.D. MPH's National Provider Identifier (NPI) is 1750491122, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Elizabeth Mark, M.D. MPH located?
The NPPES record lists a practice address at 1500 21St St, Sacramento, CA, 95811. Phone: (916) 443-3299. Providers update this record themselves, so call before visiting.
How can I verify Karen Elizabeth Mark, M.D. MPH's license?
NPPES lists California license number A71951, 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 Karen Elizabeth Mark, M.D. MPH prescribe under Medicare Part D?
In 2024, Karen Elizabeth Mark, M.D. MPH had 691 Medicare Part D claims for 136 beneficiaries; the average among infectious disease physician prescribers was 689. 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.