Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark Aaron Lazarus, MD

Individual provider Internal Medicine Physician · NPI 1902195746

Dr. Mark Aaron Lazarus, MD is an Internal Medicine in Chula Vista, California. Graduated from Rush Medical College of Rush University in 2011, 15 years ago. Practices with Boulder Community Health, a 253-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Colorado.

Years since qualifying
15
Trained at
Rush Medical College of Rush University
Licensed in
CA, CO
In the registry since
2011
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

435 H St
Chula Vista, CA 91910-4307
Phone: (619) 691-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4747 Arapahoe Ave, Boulder, CO 80303-1131 — (303) 415-7610

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A123872 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence DR.0071928 (CO)

Record details

NPI number1902195746
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 1, 2011
Last updated in NPPESSeptember 30, 2024
Certification dateSeptember 30, 2024
Mailing address1441 W Flournoy St, 2f, Chicago, IL 60607-3210

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 2011 (15 years in practice)
Group practice Boulder Community Health — 253 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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