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

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1538375217

Jin Guo, MD practises Pathology in Loma Linda, California. Qualified in 1986, 40 years ago. Practices with Peninsula Gastrointestinal, a 3-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
40
Licensed in
CA
In the registry since
2007
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

11234 Anderson St
Loma Linda, CA 92354-2804 Not confirmed with CMS for 14 years — call before visiting
Phone: (909) 558-4094
Fax: (909) 558-6425
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence A107121 (CA)

Record details

NPI number1538375217
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2007
Last updated in NPPESJune 25, 2012

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice Peninsula Gastrointestinal — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients491
Services billed 2,162 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Emanate Health Inter-Community Hospital Hospital · Covina, CA

Colleagues at Peninsula Gastrointestinal

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Loma Linda