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

Dr. Mark I Grijnsztein, MD

Individual provider Allergy & Immunology Physician · NPI 1164580866

Dr. Mark I Grijnsztein, MD is an Allergy/Immunology in Elk Grove, California. Qualified in 1998, 28 years ago. Practices with Sutter Valley Medical Foundation, a 2,464-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
28
Licensed in
CA
In the registry since
2006
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

8170 Laguna Blvd Ste 200
Elk Grove, CA 95758-7901
Phone: (916) 478-6555
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence A96813 (CA)

Record details

NPI number1164580866
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 5, 2006
Last updated in NPPESJuly 29, 2015

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Sutter Valley Medical Foundation — 2464 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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