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Internal Medicine

Janice E. Manjuck, MD

Works at hospitals in Lakeport, CA · Santa Rosa, CA · California

Summary

Janice E. Manjuck, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Lakeport, CA and Santa Rosa, CA. NPI 1386655389. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Janice E. Manjuck, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
36Years since medical school (graduated 1990)
University Of Florida College Of MedicineMedical school
FemaleGender (as listed)
Cep America - Intensivists PCGroup practice

Quick answers

Which hospitals does Janice E. Manjuck work at?
Medicare's official clinician data lists Janice E. Manjuck at 2 hospitals: Sutter Lakeside Hospital and Sutter Santa Rosa Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Janice E. Manjuck see patients?
Medicare's clinician data lists 2 practice locations, including Sacramento, CA and Santa Rosa, CA. Call before your visit to confirm the address.
What is Janice E. Manjuck's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Critical Care (Intensivists).
Does Janice E. Manjuck accept Medicare assignment?
Yes. Medicare's clinician data says Janice E. Manjuck accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Janice E. Manjuck?
(916) 887-1230, as listed in official Medicare / NPI Registry data.
What is Janice E. Manjuck's NPI number?
1386655389. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Janice E. Manjuck works

Medicare's Facility Affiliation Data lists Janice E. Manjuck at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Janice E. Manjuck is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Janice E. Manjuck as a member of this group (CMS data updated 2026-10-02).

  • Cep America - Intensivists PC125 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Sacramento

Clinicians with the same Medicare primary specialty in Sacramento, CA — not a recommendation.

All internal medicine doctors in Sacramento →

Clinician information

CredentialMD
Medical schoolUniversity Of Florida College Of Medicine
Graduation year1990
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1386655389
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians